@Kernel1.0:
For passing some synthetic test yes, but for everyday use I don't think you'll notice.
Before I had the memos at 800 Mhz, which was how the motherboard set them when in Auto. I recently started messing around in the BIOS, as I had no idea before.
I suffer from Micro-stuttering in games like Skyrim, and a friend told me it could be because my memory was too slow or I had too little Vram, I have 1280 Vram, but I read that people with my graphics card didn't have these problems. So I decided to increase the memory, and also increased the micro, from 2.66 to 4.0 Ghz, achieving stability a few days ago after several tests and tweaking the voltages a bit. In the overclock section you can find the post I opened asking for help to overclock the micro.
The point is that I'm going to see if the Micro-stuttering was due to the speed of the memory, which I have not yet checked due to lack of time, I'll let you know later...
If you say that it's not worth it for me to increase them to 2000 Mhz, then they will stay at 1600...