The bad thing is that it came to me open and it can't be changed, in the cd it came with Gygabite OC Guru II, I have tried with this:
ImageShack - Online Photo and Video Hosting
ImageShack - Online Photo and Video Hosting
Is this okay? I know I can't get the most out of it, but for the games I use with it, boosting it a little more for the moment is enough, when I can I'll go changing the whole PC

@matskyblue:

Many thanks, I will buy the GTX 660, but which motherboard do you recommend:
The one that best fits my budget: GIGABYTE GA.B85M.D3H S1150 4DDR3 2PCI PCIE 4SATA3 :: APPInformatica.com ::
Or I'm more inclined to this GIGABYTE PLACA BASE Z87 HD3 ATX LGA1150 :: APPInformatica.com ::
If you know of any at pc components it would be of great help to me, my goal is to buy the i5 4570 and the GTX 660, the 650w power supply I already have half bought and the case I will get the NOX ATX COOLBAY SX for its performance and price, the ram (6gb), the HDD (1 Tera) and the reader I have from the old pc, but I will renew it in January.

that same Z87 is at pc components a little cheaper.
Gigabyte GA-Z87-HD3 GA-Z87-HD3 Placa Base

or this one doesn't look bad.
Asrock Z87 Pro4 90-MXGPP0-A0UAYZ Placa Base
that Asrock seems more complete with 6 phases, two more USB, two HDMI and optical audio output.

the 660 has dropped a bit, I suppose that now they will release the 750Ti and 760Ti, the first one if they put a good price on it should be a better option than the 660, especially for the 256bits that will take advantage of the 2Gb of memory better.
it seems that the new AMD is going to make Nvidia have to lower prices.

regards