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Overclocking i7 870_Please help

  • Overclocking
  • Intel i7
Last response: in Overclocking
September 7, 2010 7:28:54 AM


I am trying to overclock my core i7 870 upto 3.8 Ghz (i want to be safe I dont want to crank up to 4 or 4.2)

these are my system specs -

Processor - Core i7 870 2.93 Ghz (OC - 3.8 Ghz, 182 * 21 with +0.208 additional volts )
Heatsink - CoolerMaster Hyper 212+
Motherboard - MSI H55M - E33
Ram - Corsair VS 1333 Mhz DDR3 4GB RAM (OC Auto with 1.65 Volts)
HDD - WD 500GB 7200RPM
PSU - CoolerMaster xtream Power 600w
GPU - Nvidia QuadroFX 3800 1GB
Windows 7 Professional 64bit

Max Temps - 70 - 72 C - full load

I can run Cinebench on 3.8Ghz but it is not stable with prime95 test, if I lower it to 3.6 Ghz the prime95 runs for an hour and then I get following BSOD's -

A clock interrupt was not received by the second processor during the allowed time.
uncorrectable hardware errror

but it is not that I get only BSOD's everytime, sometimes my display goes white or blue and power and reset button dont work i have to remove and plug the power cable in order to switch it off, this happens within 1 min if I am above 3.7 or 3.8 ghz.

I was able to overclock my another system with same PSU and Ram which is Phenom II 965BE 3.4 Ghz, I overclocked it upto 3.72 Ghz without any problem. and my temp are 65 C max with prime95 running whole night.

It is stable at 3.52 Ghz with cinebench and prime95, I hope my PSU is not weak for overclocking it up to 3.8 Ghz.

Please guide me what I am doing wrong and what i need to do to get it working also if you explain how much volt needs to be given to vCore,VTT and Dram that will be great, I sick your great help on this issue.

More about : overclocking 870

a c 186 K Overclocking
September 7, 2010 1:44:22 PM

My guess is the cheap H55 mobo is what's holding you back.
H55's are designed with i3 and i5 for optimum performance.
You would have more success with a P55 board.
With that being said here's a good read.