Need OC 920 help

[Dapperdan]

This is my setup, the i7 920- P6T deluxe- Noctua NH-U12P- CORSAIR Dominator 6GB DDR3 1600- Vista 64.

Original

OC



Numbers:
CPU Ratio: 20
BCLK: 190
PCIE: 100
DRAM Freq: DDR3 - 1523 MHz
DRAM Bus: 1.66
CPU Voltage: 1.35
CPU PLL Voltage: 1.96
QPI/DRAM Core Voltage: 1.35
CPU Differential Amplitude: 800MV

When I run Prime95 it goes to blue screen after a few mins. Speedfan shows all the cores with the flames when prime95 starts up then get a BSOD. Not sure what to do.

 

[sirmonkey1985]

try dropping the blk a little bit see if that solves the problem.. or raise the voltage.. im not completely familiar with the overclocking on the i7 so i dont know all the stock voltages off the top of my head.. but those would be my first idea's..

 

[xorbe]

your chip sounds like mine -- 3.8 is around the limit with 1.35v. you want it hotter, try "core damage" tester (use google). sounds like you need to lose a few bclks. if it's crashing at 190, try 185. if that is stable, i'd run at 180 just for a margin if you're comfortable with 1.35v

 

[Dapperdan]

I turned down the BCLK to 180 and ran prime95 with no BSOD yet. Anything else I should do or just leave everything else alone?

 

[Bigbacon]

At BCLK of 180 you may be able to get away with less CPU voltage as well. My CPU seems like yours kinda. So far it has maxed out at 180 but I haven't had to raise any of the voltages and it's 100% stable so far. If I try to raise the BCLK or the voltages the computer will never even get past the initial boot screen. I've tried voltages similar to what you posted with a 190 to 200 BCLK with no luck.

 

[Dapperdan]

On CPUz under memory, it shows 9 clocks, just wondering what that is cause when I see screenshots of other similar systems it says 8 clocks

 

[xorbe]

You may need to adjust DDR3 voltage and timings manually. I had to also.