- Joined
- Dec 17, 2000
- Location
- Portland, OR
Recheck your overclock by running LinX and / or Prime blend.
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It's hard (and sometimes impossible) to stabilize the FSB above ~475 w/ 45nm quads. I've found that the Large-FFT or Blend test will show errors the fastest when the FSB is unstable. FSB instability is the hardest 1 to nail down imo.
NB GTL has a big effect on it as you may have noticed.
Try turning your CPU multi down to 6, so you can focus on the FSB for now. Run Large-FFT, and take notes on how long it lasts before a failure. Then try playing w/ NB-GTL, NBv, FSB-Term, and possibly some other settings to see if you can get it to run longer.
The FSB is going to hold this chip back the same way it does on my Q9550. I'm only at 1.256v for 4GHz, but it has more potential if there was a higher multi. You're in a similar situation, and if you can get 465-475FSB stable then you're looking at 3.7-3.8GHz final OC and that might only need 1.2-1.25v to achieve.
Once the FSB is stable, switch focus back to the CPU by setting the multi to 8, and using small-fft to stress while adjusting vcore to stabilize.
Ok, I ran the large FFT test overnight, or what was supposed to be overnight. The FSB is 490 and the multi was 6. Any thoughts on what the test means? I am not as familiar with how to diagnose P95.
Maybe I'm confused, but I just write down the settings while I'm in the BIOS, and take notes on what helps and what hurts during my OCing. You shouldn't need to monitor them from w/n Windows 7 if you see what they are via the BIOS.
If you have settings on Auto it's time to take off the training wheels. Plus, w/ the FSB that high there is no telling how badly your mobo is overvolting everything. PLL & VTT might be set dangerously high. Your vcore looks way higher than it should be for those CPU speeds.
Just try 1 setting at a time, and record when P95 1st fails and what exactly happens (does a core fail, and if so at what fft size; BSOD, freeze, etc.). Hopefully, w/ time and patience you will start to get a feel for how each setting interacts w/ your OC.
I still think you might not be able to run the FSB that fast and maintain 100% stability. I tried for 4 weeks on my rig, and finally settled for 471FSB. I tried every setting possible including clock skews. I could have gotten 475...maybe 480 stable, but I was shooting for 500. Best I could do is run some benchmarks at 495, but it wasn't P95 stable.
Most of the high FSB results I've seen w/ 45nm quads have been on GB boards.