Test of the Real Nvidia Gtx Titan, single-sli-tri Sli, 4 WAY SLI
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The screenshot I posted is from overclock.net. Mine is a stock one. This image belongs to an SC, like the ones you have.What I was telling you in red are the bios modifications that are circulating, which are the boost to 1400 (which would actually let the card start from 1200, the voltage modification (which leaves it at 1.21 fixed) and the TDP (which leaves it at 150%). The rest of the values are untouched.
I, ignorant of me, copied my bios with GPUz and then, with bios tweak, I only modified the TDP.
Thanks for the bios. It's from an SC, right? From what I see the TDP at 100% is equivalent to 107% of the original, and, the next one to 15% of the original.
I also see a modification between the state P00 and P02 of between 1.17 and 1.18. I imagine that these will be the values in which the vcore will fluctuate, right? I would like to leave it at 1.16, I wouldn't like to put more voltage into it.
This is what I was telling you that I had missed changing.
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Teeth, what I have sent you is not from an SC, if you want I can send you one from an SC, (from mine) but they do not perform as you want by air. It is modified calculating the V drop that the fan produces, that is, in theory, it should work for you like mine, now that they do not have a fan, that is why I recommend it to you since it is for you, so that you can test it on your cards according to try to solve the problems that you specifically have, you see that the voltage is very, very little raised, that is, like mine without a fan, so I know that nothing will happen to you. I do not want to flash mine as I said before because for me, I have enough and when I finish assembling the 4, what more do I need.
There are CPUs that suck more voltage and cause more drops, from what you comment I think that yours is one of those, that is why it is raised a little more. At your own risk if you want to test it and if you want we can lower it a little, but be careful, I am not responsible for anything, you know.
Edit, that 1.18 is when this bottleneck but it should drop to point or point and a half, more or less to 1.16V. like mine -
Teeth what I have sent you is not from a SC, if you want I can send you one from a SC, (one of mine) but they do not perform as you want for air. It is modified calculating the V drop that the fan produces, that is, in theory it should work like mine, now that they do not have a fan, that is why I recommend it to you since it is for you, so that you can test it on your cards according to try to solve the problems that you specifically have, you see that the voltage is very, very little raised, that is, like mine without a fan, so I know that nothing will happen to you. I do not want to flash mine as I said before because for me, I have enough and when I finish assembling the 4, what more do I need.
There are CPUs that suck more voltage and cause more drop, from what you comment I think yours is one of those, that is why it is raised a little more. At your own risk if you want to test it and if you want we can lower it a little, but watch out, I am not responsible for anything, you know
Edit, that 1.18 is when this bottleneck but it should drop to point or point and a half, more or less to 1.16V. like mineThanks for your help.
I thought they were SC because of the base and boost values, which are 875.5 and 928. I imagine it will be to compensate for the fact that they will rise up to 1019 at input plus the boost that adds the extra voltage between 1.16 and 1.18, the latter voltage being temporary.
Did you modify it yourself?
I would not hold you responsible for anything, in fact, I appreciate your help. If you tell me that this voltage is safe I will be more at ease. I intended to keep them above those 1084 without fluctuating.
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Teeth, in my opinion, I don't think your GPU can reach those values with the stock Vcore or an already modified one, since the SCs have the same voltage as the others, or at least that's what I think since all the ones I've touched were SCs. That's why it's a bit higher, but if you test it and want to lower it a bit, you know there's no problem, I lower it and that's it, you'll say. Of course, don't feel committed or forced to test it or anything like that. I forgot to tell you that the voltage curve has also been modified, that is, instead of rising so suddenly when you put a very large load on it, it does it more progressively to avoid the voltage spike that could damage the CPU and thus perform better control of the power supply, that is, even more security.
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Tomorrow I will try it (today I am traveling, as usual),
so, forgive my ignorance, but I want you to tell me if I have understood it correctly:
My GPU doesn't think it can reach 1084 with stock voltage. However, I have run Unigine up to 1110 without crashes. But, according to what you say, it has nothing to do with it. That is, probably, for my GPUs to be able to go up to 1084-1097 or 1110 I will have to put more vcore (logical because they also start at lower frequencies).
So, the modification you left of the values from 876-928 in the biios (which as I mentioned to you, are the values of an SC, that's why I had asked you, since mine are 837-876), are to go up to 1032 from the start (since it stays at 980, as I mentioned to you). That is 980-876 = 104. Now 928+104 that go up automatically would be the 1032?, or does this not work that way?
So, you have modified the minimum core that the card will work at, which becomes 1.175 (mine starts at 1.16, then goes down to 1.15 and 967 in Crysis, for example). This way it would always stay at a minimum of 1.16 (which is what I am looking for), and, you raise the vcore by one point to 1.187 to avoid crashes due to a momentary peak of maximum consumption at around 1084 frequency.
Forgive the long text. I am a bit slow to understand these things.
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Perfect, nothing more to add. I leave tomorrow afternoon to go to work and I will try to read here when I can to see how you are doing.
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Thanks. I'll keep you posted.
I'm sorry that it came out so lazy.
Don't you think I can reach 1084 with 1.16 if I've been playing crysis 3 and unigine and passed the OCCT with a +104 offset and serial voltage?
If I see that it's going well at 1.175 would we go down to 1.16-1.175?
And, what do you mean by it will be more protected, by not going up all of a sudden from, for example, 1.16 to 1.20? (which is what the EVGA Precision does by raising the voltage, right?), since we limit it to a maximum of 1.18?
It seems like I already understand what it's about.
Thanks really. Tomorrow I'll flash, test and let you know.
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Teeth try this one first, it is even less aggressive than the previous one to see how it goes, if it doesn't convince you try the previous one. This one is from an SC just like the original (from one of mine) I have just removed the name of evga, so that it only says Nvidia, if you want it to say gigabyte or the one you have, send me yours and I will read how gigabyte or asus or the one you have encodes it:
GK110SC_Teeth.rom | PutLocker -
Well, I've pulled myself together and flashed it.
No, in the end, everyone who goes through the thread with a Titan flashes it…......;)
There's a lot of potential to be gained just by maintaining voltages and TDP.
Well, I already have the operational equipment, so I've gone through a series of rounds with the resolution you're using, which, by the way, what's up with that strange resolution?
First with the 3930 stock, and the memory at 2100 CL9. The graphics, the SC at 1019 and the Gigabyte at 993 without touching anything, completely in default, bios modified.

Second with the 3930 at 4.9 and the memory at 2400 CL9, the graphics still stock.

I think it's pretty clear that these beasts need a processor that moves them well….... :ugly:
And finally with the processor at the previous OC and the graphics, the SC at 1215 and the Gigabyte at 1189.

The graphics by water change like night and day, temperatures in idle, 20-21º, and under load, the maximum they've gone up with the OC has been 37º.
For today, that's enough PC day, tomorrow I'll update the mod thread with the finished equipment, but I'll give you a sneak peek…........;).

By the way majo, since we were talking about power supplies earlier, could it be that with the new power supply, the equipment consumes up to 100W less?, with more load?. I have a power meter connected to the wall, with the complete equipment before changing the power supply with the graphics with OC, it gave me peaks of 1100W. Now I've been monitoring the consumption with the equipment with OC processor and graphics, and it's around 1000W, with the new power supply.
I haven't downloaded the power supply software yet, I went to register it, but the EVGA registration page wouldn't load. I'll try again tomorrow.
Best regards..
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Jotole, do you have two gigabytes and an SC? You say that you flash and stock give you 993 and 1019 the SC? But that with the voltage increase already in?
Yes, I was scared to flash it. As Majo and I discussed, I put it in half-baked. I expect more testing when I get home. I intend to leave the 1.16 fixed, and avoid throttling up my nose.
Majo, thanks for your help.
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Jotole, of course you can have that difference, even more. Keep in mind that from the start of platinum or gold quality to silver or bronze we can have differences in real effectiveness between 10 and 20%, if we talk about 1000W, which in this case is more, do the math (between 100 and 200W of loss). It is also true that all PSUs lose effectiveness little by little until they stabilize and yours will also suffer from it, of course depending on the quality and design of the circuit, this loss is greater or lesser, logically and it will happen in a few or many hours of use.
I would also say that you throw that wattmeter ;D;D;D;D;D ;:
3 Impressive Beasts = 900W or something more depending on the OC.
CPU Overclocked = 175W, this is very variable, from stock maximum 130W and you know that depending on the load it is extremely variable.
Motherboard = 65 W, also variable depending on the OC, memory, etc.
RL pumps, if they are D5, depending on whether they are adjustable or not and if you have them at full capacity 37W x2= 74W
Fans, you have a good number of them, I put 20 fans = 30 W
Rest of equipment = 30W.
PSU waste a minimum of 10% depending on the workload, it can reach to waste between 100W and 150W that are simply transformed into heat, good for winter :osvaisacagar:Let's say that you can have peaks of 1300 to 1400W real so you will have the opportunity to test the PSU to the max.
And also we must take into account the harmonics that it produces that can even make the differential of the house jump for overload in a line, in this case it would be necessary to put an immunized differential to avoid this problem. The one I checked did not have many harmonics, in this aspect I liked it a lot.I just found this link that comes in quite handy:
eXtreme Outer Vision - eXtreme tools for computer enthusiasts click on psu calculator
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majo, out of curiosity, have you looked at what ASICs the different cards you've tested have, you've had quite a few? It seems that the Titan does have a more noticeable ASIC.
Jotele, we passed the Unigine this way, because it's the "Extreme" preset of the benchmark, so it's easier to ensure that what we're comparing is the same.
Greetings
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Jotole, tienes dos gigabyte y una SC?, dices que flasheadas y de stock te dan 993 y 1019 la SC?, pero eso con el incremento de voltaje ya metido?
Sí, me dio respeto flashearla. Como comentamos Majo y yo, la metí a medio cocer. Espero alguna prueba más al llegar a casa. Pretendo dejarle los 1.16 fijos, y evitar el throttling de las narices.
Majo, gracias por tu ayuda.
Sí, primero me hice con 2 Gigabyte, y la última en llegar ha sido la SC. Esas Frecuencias las tiene con las bios modificadas, y el vcore fijo si. Pero curiosamente cuando venian "de casa", una de las Gigabyte era muy flojita, mas vaga que esa tuya. solo hacia los 993 por defecto. La segunda si era mas ocera y llegaba a los 1019, y la SC por defecto es la que mas tiraba, llendose hasta los 1045. Claro que esas frecuencias solo las veia al arrancar un juego, en el momento que entraban los limites bajaban hasta 836, 875, 967 respectivamente, tengo todos los datos guardados. ;).
Ahora simplemente con las graficas de "stock", con menos frecuencia, (ignoro porque, al flashearlas dan menos frecuencia que las que traian), rinden mas, bastante mas, al no entrar los limites.
Ya he visto que tu mismo has modificado la bios, de eso si que soy completamente incapaz, como te comenta Pepillo, antes de flashearlas con esas bios de OCN, hemos visto que no daban problemas de ningun tipo a los usuarios de allí.
Espero que lo soluciones con la que te ha pasado majo ;).
Un Saludo
Jotole, por supuesto que puedes tener esa diferencia, incluso más.Ten en cuenta que ya de entrada de calidad platinum o gold a plata o bronce podemos tener diferencias de efectividad real entre 10 y 20%, si hablamos de 1000W, que en este caso es mas, echa tu las cuentas ( entre 100 y 200W de pérdida). También es cierto que todas las PSU pierden efectividad poco a poco hasta que se estabilizan y la tuya lo padecera también, claro dependiendo de la calidad y diseño del circuito, esta perdida es mayor o menor, lógicamente y lé ocurrirá en pocas o muchas horas de uso.
También te diría que tires ese vatímetro ;D;D;D;D;D :
3 Bichos impresionates = 900W o algo mas dependiendo del OC.
CPU Oceado = 175W, esto es muy variable, de stock máximo 130W y ya sabes que dependiendo de la carga pues es extremadamente variable.
Placa base = 65 W, tambien es variable dependiendo del OC, memorias, etc.
Bombas RL, si son D5, dependiendo si son las regulables o no y si las tienes a tope 37W x2= 74W
Ventiladores, tienes una buena tanda de ellos, pongo 20 vetiladores = 30 W
Resto de equipo= 30W.
Desecho de la PSU un 10% mínimo dependiendo de la carga de trabajo, puede llegar a desperdiciar entre100W y 150W que son simplemente transformados en calor, bueno para invierno :osvaisacagar:Vamos que puedes tener picos de 1300 a 1400W reales asi que vas a tener oportunidad de probar la PSU de narices.
Y también hay que tener en cuenta los armónicos que produzca que incluso pueden hacer salta el diferencial de casa por sobrecarga en una linea, en este caso haría falta poner un diferencial inmunizado para evitar este problema. La que yo chequee no tenía muchos armónicos, en este aspecto me gustó mucho.Acabo de encontar este link que viene bastante bien:
eXtreme Outer Vision - eXtreme tools for computer enthusiasts hacer click en psu calculator
La Revo que tenia montada es Sylver, y la evga es Gold, si que tienen que tener diferencia en eso. Pero me ha llamado la atención eso de que consuma menos, con el equipo con mas carga. Ahora llevo una D5 mas, tres en total, auqnue 2 estan al 3 y una al 4. Con los ventis no te has equivocado, tengo 20 montados…..:ugly:
Yo no tengo que tener limite en el diferencial, me hubiera dado cuenta bencheando con las 4 580, que se iba a mas de 1500W, hasta que la Enermax, cortaba el suministro......:ugly: Precisamente por eso de cambiar, ahora tengo mas energía, y incluso diría que mejor, por ejemplo una cosa que el equipo no hace ahora que antes hacia estando oceado a 4,9, es que al reiniciar, siempre se apagaba un segundo y volvia a encender. Ahora no lo hace. Le he echado la culpa a la fuente. O al arrancar, daba como dos veces, encender apagar, ahora tampoco lo hace.
Ya tengo el sof de la fuente dime que te parece.

En Full

Que diferencia hay entre Input Power, y Output Power?
El medidor es malillo.del "carrefu"….........xD. Pero me da los mismos valores que el programa.
Muchas Gracias por los datos...!!.
Un Saludo
majo, por curiosidad, ¿Has mirado que ASIC tienen las diferentes tarjetas que has probado, tu que has tenido bastantes? Parece que en las Titan si que se nota un mayor ASIC.
Jotele, pasamos el Unigine así, porque es el preset "Extreme" del benchmark, así es más fácil asegurar que lo que comparamos es lo mismo.
Saludos
En las mias los Asic´s no tienen relación con las frecuencias impuestas en las tarjetas. Por ejemplo la que tengo con mayor Asic es una Gigabyte con 81,4%, le sigue la SC 72,5 y la "vaga" tiene 69,6%.
A ver si encuentro un cuadro de Asic de Titan que vi por OCN, donde venia a decir que el Asic, no es relativo al OC, dependiendo del Asic, son mejores para oc por aire o por agua.
Yo no le doy importancia a eso.
Pensaba que era por otra cosa lo del unigine, como siempre lo he pasado en 1080p, me extraño esa confi.
Gracias por aclararmelo.
Un Saludo..
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Thanks Jotole, I feel more at ease. Mine clocks at 980 (in Unigine it stays fixed there, at 980 and 1.15), in games it goes down to 967, so, according to what you told me, it's not so bad, since the SC you have took it down to that and the others even less…
Edit: what tests were you running?, in games, in Unigine?, without Vsync? (I imagine so, but just asking)
Modifying the bios isn't that complicated, let me explain, I made a backup of mine. Then all I did was modify the power target. And flash it. I've put the stock one back.
Then I'll try with the ones Majo sent me.
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I have already tried all of them. And 3 of them perfectly support the 1202MHZ stock of that superbios.. but the laziest one, no.. it doesn't go beyond 1175MHZ.
ASICs must have something to do with it.
The 3 that do it, hover between 72 and 77% and the one that doesn't do it, has only 66%..
A shame, because really having 4 of these beasts at 1202 fixed would be the bomb.. although unnecessary, certainly…
Anyway. I think that all the ones that do 1006MHZ by default, will support that bios. Another thing is the ones that have less.. and if they have more, they will definitely do it.
Regards.
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Thanks Jotole, I feel more at ease. Mine clocks up to 980 (in Unigine it stays fixed there, at 980 and 1.15), in games it drops to 967, so, according to what you tell me, it's not so bad, since the SC you have dropped down to that and the others even less…
Edit: what tests were you running?, in games, in Unigine?, without Vsync? (I imagine so, but just asking)
Modifying the bios isn't that complicated, let me explain, I made a backup of mine. Then all I did was modify the power target. And flash it. I've put the stock one back.
Then I'll try with the ones Majo sent me.
Yes that's because of the bad driver reading they mention, but anyway, what I think is that nvidia has it "trimmed" for something, I wouldn't know why. Because seeing the change they make when you put those bios and remove the limiters leaves me puzzled.
If making it custom is the ideal, but since at least I miss some values, I prefer not to touch and mess up a card of this range. So I made sure I knew what I was putting in….
Best regards..
I've already tried all of them. And 3 perfectly hold the 1202MHZ stock of that superbios..but the laziest one, no..it doesn't go over 1175MHZ.
ASICs must have something to do with it.
The 3 that do it, hover from 72 to 77% and the one that doesn't, has only 66%..
A shame, because really having 4 of these beasts at 1202 fixed would be the bomb..although unnecessary, certainly…
Anyway. I think all the ones that do 1006MHZ by default, will hold that bios. Another thing is the ones that have less..and if they have more, without a doubt they will.
Best regards.
I haven't tried limits yet, with those values I put earlier, 1215 the SC and 1189 the Gigabyte, I play everything perfectly, without anything strange. With that I have more than enough.
I don't know if you've checked the performance before flashing them, but in my case I'm thrilled. The increase has been beastly, how these cards go up in performance with OC, and not like the 6 series.
Tomb Raider + 30 fps
Crysis3 + 25 fpsAnd so all the ones I've tried, Medal of Honor, Metro, the most demanding games, and remember I'm talking about 7680 x 1440p a barbarity what these cards throw with that OC.
Playing for about 45 min. they haven't gone over 45º with the graphics load always above 96%.
I'm going to try how far they go, but I'll always have them with those values.
Best regards…
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Jotole the input is the power consumed at the outlet and the output is the power delivered to the equipment by the PSU.La the difference is the power lost as heat inside the PSU.I still think that this software does not give correct measurements.
Pepillo I can't tell you about my ASIC right now because I'm not at home, I'm out.About the ASIC we were discussing it at work last year and well the guy in charge of the GPU topic informed us that the ASIC is more or less the quality of the doping depending on how balanced, stable and distributed it is over the core.In the core there are a series of components that must be mixed in percentages per nanometer and this must be as perfect, balanced and exact as possible (homogeneous in certain areas).Obviously this is very difficult to achieve, I refer to the perfection of the doping.Depending on its imperfection the CPU or GPU has a higher or lower drain current, that is, it uses it better or needs more to achieve a speed let's call it X. But here's where it gets complicated, imperfect dopings can cause better performance at certain temperature values, since temperature is fundamental, completely changing the chemical stability of the doping and therefore the performance or consumption (it can be expressed as you want, better use of x nanoamps or more nanoamps to achieve x speed).According to the manufacturers of cores a bad doping gives better performance at X temperature than a good doping.Of course the manufacturer dopes thinking about a temperature range X, if I vary it I break the manufacturer's rule.I call the deviation from the doping rule good or bad but it's really poorly expressed, it's simply different or deviates from what the customer or manufacturer intends and that sometimes, I repeat, is better than what the manufacturer wants.As a general rule perfect dopings improve their performance in the temperature range that the manufacturer determines that core should work.Obviously Titan is designed to work between 75 and 85 degrees and deviated or imperfect dopings can make Titan work better outside of those temperature ranges.But it's also true that higher temperatures cause more drain due to chemical destabilization and if the doping is good this drain is less.
Of course I asked him, then in the graphs that manufacturers release out of the box and improve the temperatures, in theory we are breaking the rules.Of course I already suspected what he was going to answer, they get more speed out of the box by setting the same final temperature as some with less quality and worse heat dissipation.But I asked him again and eVGA in their hydro that lowers a lot the temperature that it mounts, Good or bad chips? (I repeat that they are neither good nor bad just different) His answer was silence he couldn't give me an explanation.That's why I say that the ASIC must have something to do with it, but only to a certain extent.And finally I doubt that the GPU can read the ASIC well, I know that it is engraved at an internal level in the micro when they take them out of the wafers and check them and this is checked with thermography.As far as I know Gpuz reads rom and other values, I think it doesn't have access to certain microcodes of the core, but this is just my assumption -
majo, por curiosidad, ¿Has mirado que ASIC tienen las diferentes tarjetas que has probado, tu que has tenido bastantes? Parece que en las Titan si que se nota un mayor ASIC.
Jotele, pasamos el Unigine así, porque es el preset "Extreme" del benchmark, así es más fácil asegurar que lo que comparamos es lo mismo.
Saludos
Jotole el input es la potencia consumida en el enchufe y el output es la potencia entregada al equipo por la PSU.La diferencia es la potencia perdida en calor dentro de la PSU.Sigo pensando que ese soft no da mediciones correctas.
Pepillo mi ASIC no te lo puedo decir ahora porque no estoy en casa, estoy fuera.Sobre el ASIC lo estuvimos comentando en el trabajo el año pasado y bueno el que lleva el tema de GPU nos informó que el ASIC es mas o menos la calidad del dopaje en función de lo equilibrado, estable y repartido que este sobre el núcleo.En el núcleo van una serie de componentes que deben estar mezclados en tantos por cientos por nanómetro y esto debe ser lo más perfecto, equililibrado y exacto posible( homogeneo en determinadas zonas).Lógicamente esto es muy dificil de conseguir, me refiero a la perfección del dopaje.Dependiendo de su imperfección la cpu o gpu tiene mayor o menor corriente de drenaje,es decir la aprovecha mejor o necesita mas para conseguir una velocidad llamemosla X. Pero claro aqui es donde la mata, dopajes imperfectos pueden ocasionar mejores rendimientos en determinados valores de temperatura, ya que la temperatura es fundamental, variando completamente la estabilidad química del dopaje y por ende el rendimiento o el consumo ( se puede expresar como se quiera, mejor aprovechamiento de x nanoamperios o mas nanoamperios para conseguir x velocidad).Según los fabricantes de núcleos un mal dopaje da mejor rendimiento a X temperatura que un buen dopaje.Claro el fabricante dopa pensando en una margen de temperatura X, si yo lo varío rompo la regla del fabricante.Yo a la desviación de la regla del dopaje lo llamo bueno o malo pero realmente esta mal expresado, simplemente es diferente o se desvia de lo que pretende el cliente o fabricante y que en ocasiones repito es mejor que lo que el propio fabricante quiere.Por regla general dopajes perfectos mejoran su rendimiento en el rango de temperaturas que el fabricante determina que debe funcionar ese núcleo.Lógicamente Titan esta pensada para trabajar entre 75 y 85 grados y dopajes desviados o imperfectos pueden hacer que Titan trabaje mejor fuera de esos rangos de temperatura.pero tambien es cierto que a mayor temperatura mayor drenaje por desestabilización química y si el dopaje es bueno este drenaje es menor.
Claro yo le pregunté, entonces en las gráficas que los fabricantes sacan oceadas de serie y mejoran las temperaturas, en teoría estamos rompiendo las reglas.Claro ya lo suponía lo que me iva a responder, sacan mas velocidad de serie estableciendo la misma temperatura final que unas con menos calidad y peor disipación.Pero yo le volvi a preguntar y eVGA en sus hidro que baja mucho su temperatura que monta, Chips buenos o malos? ( repito que ni son buenos ni malos simplemente diferentes) Su respuesta fue la callada no supo darme explicación.Por eso digo que el ASIC si tiene que ver, pero hasta cierto punto.Y por último dudo que el GPU puede leer bien el ASIC, yo sé que queda grabado a nivel interno en el micro cuando los sacan de las obleas y los comprueban y esto lo comprueban con termografia.Gpuz que yo sepa lee rom y otro valores, pienso que no tiene accseo a cieros microcodigos del núcleo, pero esto es simplemente suposición míaA mí tambien me extrañan esos consumos, pero ya son 2 "medidores", los que me dan una cifra parecida, intentaré contrastar con otro metodo..
Este es el cuadro que decía antes que vi, se puede sacar directamente con el gpu-z.

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Majo, piece of explanation. I've got the concept, but I lack technical wisdom...
I haven't had time to flash it yet, I have it pending. What I will also do, if it's not too much trouble for you, is to send you my BIOS so that you can leave it at 1.16 fixed.
Auer I got home late, today I'm working, but, even though I got home late I ran a test on it. The unigine crashed at 1110 and 1.15, after 20 minutes. However at 1097 it didn't. This with 1.15. It insists on going down to 1.15. If the consumption is not very high and the GPU is cool it gets stuck at 1.16. There are games that even though the GPU usage is at 99% the power target is not at the limit. I imagine it's because of the different use that the game makes of the graphics.
The biggest hog, by far, is Crysis 3. With it, if I put more than 1032 of the core it goes into throttling. At 1032 it stays stuck.
About the ASIC, well according to what Majo says, well what I interpret is that you may have an ASIC that's not very good and that it has a good overclock when the temperature is contained.
Jotole has a pretty good ASIC, and, even so, he doesn't have it at full capacity out of the box.
Mine is from a 66.9. A bit of a chestnut.
Jotole, I think they come capped because if not nobody would get the 690. That's why e, maybe, for some other reason...