EggXpert

System Specs:
Intel Q9550 2.8
EVGA 780i SLI FTW
Nvidia GTX 280 x2 SLI
G.SKILL 4GB (2 x 2GB) DDR2 @ 1066
SILVERSTONE OP1000-E 1000W ATX 12V 2.2 & EPS 12V
Windows Vista 64 bit 

FSB-1884 mhz
CPU-8.5x
Linked and synced RAM
RAM timings 5-5-5-15 2T

CPU-1.375V
FSB-1.4V
Mem-2.1V
SPP-1.45V
MCP-1.55V
SPP MCP – 1.35V

All spread spectrum's are disabled. Everything in this list is disabled: C1E Speed step Execute disable bit My Q9550 is overclocked at 4.0. I am able to boot into Windows, I go to run some stability tests: I run Prime95 to test it out. My idle CPU temps are 40, during load my temps are no higher than 60 and about 5 minutes into the Prime95 test I get a BSOD. I also BSOD randomly when running 3Dmark benchmarks. What settings to I need to change to get a stable system?

 Thank you for your time

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You need to lower your FSB or consider better coooling for your CPU, Northbridge, andd/or southbridge and memory.

You're overclocking too much for an air cooled system. 

CheapAsianGamerGuy:

You need to lower your FSB or consider better coooling for your CPU, Northbridge, andd/or southbridge and memory.You're overclocking too much for an air cooled system. 

I didnt think temperature was even an issue, with 40 idle and 60 load thats some what of a surprise to me. 

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Its getting 60C at 4.0GHz? I hightly doubt that.

60C is the g=beginning of "possible instability".

And what's your VCore max set to? I bet that's redlined too.

The temperature increases dramatically as you get higher FSB's, and Realtemp is knows to have issues with accuracy under certain situations. 

Have you raised the VTT Voltage any? it might help.

Edit ....... the 45NM cores love VTT

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Just a thought for the setting

CPU 1.37-1.40V (above the intel's recommendation, do it on your own risk)
VTT  1.35-1.45V
NB/SB 1.6V

 Don't know how well it works, but give it a try.

Also a few known good settings.

   466.6Mhz        1866QDR        RAM @     933Mhz           =3966Mhz
  475Mhz           1900QDR        RAM @     950Mhz           =4040Mhz

Make sure Speedstep, Thermal, & CE1 disabled. 

And if your going over 1.325v on the CPU, watch the temps like a hawk, that thing will get smoking hot at first. After a while of "burning in" (few months) I have been able to lower my CPU Voltage considerably and it is still stabil. very odd, never seen that before.

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