Originally Posted by Weegsta
Ok one more thing what do yah think about this? Some guy recommended changing the NB frequency so I did. I'm staying very stable with what I have here.
I'm running CPU 4000MHz @ 1.4750 Volts. With NB Frequency @ 2400MHz. Idles at 32C
Prime after 5 min is 44C
Have you tried with lower voltages? 1.475V seems high for 4GHz. I know that not all chips are created equally, but you should at least try to see if it will be stable with less volts; give your chip a longer life.
As for the CPU-NB and HTLink....
On Deneb cpus:
- HTLink likes to be at or around 2000MHz.
- CPU-NB likes to go up with CPU Speed. When I was learning to OC these chips I found a guide at another board that was quite educative and helpful. Here
There is a section there that addresses the CPU-NB speeds and how they relate to CPU Speed. From that guide you can find what the CPU-NB should be around at a given CPU Speed with this formula:
CPU-NB Frequency (+/-200) = (CPU-Frequency * 2 ) / 3.15
So in your case: CPU-NB +/- 200MHz = (4000x2)/3.15 => CPU-NB +/- 200MHz = 2539.68
So if you take the - side of the formula you get 2539.68 - 200 = 2339.68 for CPU-NB which is right around the 2400 that was recommended to you. I'd say you can leave that setting there and just give the CPU-NB voltage a small bump. Default for it is 1.100V; your board should be able to raise it in 0.025 increments... Give it 0.025 or 0.050 that should be more than enough.
I have to insist though... Try to see what the lowest CPU voltage is that will allow you to get into OS at 4GHz. Once you find that, a small bump will put you in "stability" world for sure.... And hopefully it won't be as high as you have now.
PS: Please, please... Overclock your cpu from BIOS. Don't use AMD OD for this. The SW OCing tools are known for overvolting more than the chips need. Edited by xXSebaSXx - 6/17/11 at 9:25pm