i7 Overclock Advice

Unbreakable · 30 Nov 2010 at 14:48

I seem to have gone as far as I can go with my i7 920 D0, rest of my spec is in my sig.

Currenty at 3.8Ghz but temps are getting really high @87C max under prime.

My bios settings are as follows:

Ai Overclock Tuner.....................[Manual]
CPU Ratio Setting......................[21.0]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Xtreme Phase Full Power Mode...........[Enabled]
BCLK Frequency.........................[181]
PCIE Frequency.........................[101]
DRAM Frequency.........................[DDR3-1451MHz]
UCLK Frequency.........................[Auto]
QPI Link Data Rate.....................[Auto]

CPU Voltage Control....................[Manual]
CPU Voltage............................[1.23125]
CPU PLL Voltage........................[Auto]
QPI/DRAM Core Voltage..................[Auto]
IOH Voltage............................[Auto]
IOH PCIE Voltage.......................[Auto]
ICH Voltage............................[Auto]
ICH PCIE Voltage.......................[Auto]
DRAM Bus Voltage.......................[1.65]
DRAM DATA REF Voltage on CHA...........[Auto]
DRAM CTRL REF Voltage on CHA...........[Auto]
DRAM DATA REF Voltage on CHB...........[Auto]
DRAM CTRL REF Voltage on CHB...........[Auto]
DRAM DATA REF Voltage on CHC...........[Auto]
DRAM CTRL REF Voltage on CHC...........[Auto]

Load-Line Calibration..................[Enabled]
CPU Differential Amplitude.............[Auto]
CPU Clock Skew.........................[Auto]
CPU Spread Spectrum....................[Disabled]
IOH Clock Skew.........................[Auto]
PCIE Spread Spectrum...................[Disabled]

C1E Support............................[Disabled]
Hardware Prefetcher....................[Enabled]
Adjacent Cache Line Prefetch...........[Enabled]
Intel(r) Virtualization Tech...........[Disabled]
CPU TM Function........................[Enabled]
Execute Disable Bit....................[Enabled]
Intel(r) HT Technology.................[Enabled]
Active Processor Cores.................[All]
A20M...................................[Disabled]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Intel(r) C-STATE Tech..................[Disabled]

Any advice on lowering these temps/increasing the overclock would be most welcome.

Thanks in advance.

Sgt Tackleberry · 30 Nov 2010 at 14:56

Try dropping you "CPU Ratio Setting......................[21.0]" to 20.0 and try upping your BCLK Frequency 3-5 at a time, run prime95 for 30mins if it's not stable then try upping the voltage a little a time n try prime95 til it's stable then up the BCLK Frequency and so on.

DragonQ · 30 Nov 2010 at 15:01

Wow those temps match mine but you have HyperThreading disabled...looks like you might need to re-seat your cooler. Also, enable SpeedStep and set multiplier to Auto (your max speed will still be 3.8 GHz).

Unbreakable · 30 Nov 2010 at 15:10

Sgt Tackleberry said:
Try dropping you "CPU Ratio Setting......................[21.0]" to 20.0 and try upping your BCLK Frequency 3-5 at a time, run prime95 for 30mins if it's not stable then try upping the voltage a little a time n try prime95 til it's stable then up the BCLK Frequency and so on.

Iv found a 20 to be much more unstable then 21. End up getting BSOD @3.8ghz.

DragonQ said:
Wow those temps match mine but you have HyperThreading disabled...looks like you might need to re-seat your cooler. Also, enable SpeedStep and set multiplier to Auto (your max speed will still be 3.8 GHz).

Sorry that was a mistake, I do have HT enabled. I will try enabling speedstep and auto multiplier.

Sgt Tackleberry · 30 Nov 2010 at 16:05

What cool do you have? If it's stock then I would change it, I use this http://www.overclockers.co.uk/showproduct.php?prodid=HS-072-AK&groupid=701&catid=57&subcat= or do what was said reset your CPU cooler.

Unbreakable · 30 Nov 2010 at 16:13

Sgt Tackleberry said:
What cool do you have? If it's stock then I would change it, I use this http://www.overclockers.co.uk/showproduct.php?prodid=HS-072-AK&groupid=701&catid=57&subcat= or do what was said reset your CPU cooler.

I have a Titan Fenrir EVO. Will reseat it and see if that helps.

Sgt Tackleberry · 30 Nov 2010 at 17:20

Also what thermal compound are you using?.

Unbreakable · 30 Nov 2010 at 17:20

Sgt Tackleberry said:
Also what thermal compound are you using?.

AS5

Sgt Tackleberry · 30 Nov 2010 at 17:23

Well that good stuff, how much did u use? Only a pea size blob?. that's what I use. Have u reset ur cooler? If so wat temps u getting?.

Unbreakable · 30 Nov 2010 at 18:22

I used a thin line, will reseat it in the morning and see how I get on.

Sgt Tackleberry · 30 Nov 2010 at 18:27

Ok or u could criss cross it with a thin line. Let us know how u get on.

Andrew G · 30 Nov 2010 at 18:34

AFAIK the Thermaltake Frio CPU Cooler has it on the benchmarks and at almost the same money...

Must say I always had trouble with thermal paste/grease until someone on here posted a great link, http://www.arcticsilver.com/instructions.htm, choose your product and chip works every time for me now.

Unbreakable · 2 Dec 2010 at 17:16

Well I reseated my cooler which didnt really make much difference.

1.225v is as low as iv managed to keep 3.8ghz stable. Are these temps too high?

TheCenturion · 2 Dec 2010 at 17:35

Your cpu voltage is at 1.23125

I have my vcore at 1.41 when running 4.5 ghz. try upping it

Unbreakable · 2 Dec 2010 at 17:45

Surely uping the voltage even more is going to take the temps above 90C? This is my worry, 85C seems hot as it is.

TheCenturion · 2 Dec 2010 at 17:47

Oh sorry, my mistake, I thought that you wanted to go higher than 3.8

What are your room temps, ambient case temps, and temps on stock? What program are you using to read temps?

Unbreakable · 2 Dec 2010 at 18:02

TheCenturion said:
Oh sorry, my mistake, I thought that you wanted to go higher than 3.8

What are your room temps, ambient case temps, and temps on stock? What program are you using to read temps?

Well i would like to go higher but I dont fancy any higher temps then what I have now.

Room temp isnt all that warm, dont have a thermometer to test it though. Same with the case temp.

There is a decent airflow in the case, 3 inlet fans and 3 exhast. Taking the side panel off the case only reduces the cpu temp by a couple of degrees.

Im using Core Temp.

Sgt Tackleberry · 2 Dec 2010 at 18:07

With the 3 side fans turn them so they r blowing in and have the back case fan blowing out, c if that helps

TheCenturion · 2 Dec 2010 at 18:23

hmm, the fact that taking the side panel off reduces temps may indicate that cirulation isn't that great. In my setup and in a few setups I've seen, temps increase when side panel is removed.

Sgt Tackleberry · 2 Dec 2010 at 18:34

How have you got all your fans set up?.