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i5 750 Overclock.

post #1 of 7
Thread Starter 
I got this thing about 10 months ago, tried to OC it but was being held back by my old outdated heatsink. I won a Corsair H70 so I've got much better cooling than before.

I'm a newb to overclocking and in the past I've increased the FSB and set everything else to auto. From what I understand the best thing to do is to lower the CPU multiplier and find the highest possible FSB speed then increase the CPU multiplier as high as it can go. I'd also like to know what safe voltages are for my CPU/MoBo.

My Specs are:

CPU - i5 750
Mobo - Asus P7P55D-E
Memory - G-Skill Ripjaw PC312800 7-8-7-24-2N 1.65V.
PSU - 700W Silverstone 80+ certified
XFX GTX 260+

Thanks for the help.
Edited by 35g700 - 1/24/11 at 4:54pm
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post #2 of 7
do NOT use auto on all settings lol.
Try these.

BLCK = 191
MULTI = 21
VCORE = 1.35V
PLL = 1.80 Or 1.88
VTT =1.35
RAM = 1.65

Make sure your ram is below it's recommended speed while you're testing

Then if that posts and runs stable with "Intel Burn Test" you can try reducing the vcore a little bit
Edited by Mr OCN - 1/24/11 at 5:01pm
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post #3 of 7
Thread Starter 
I don't see anything labeled "VTT"

What about IMC voltage, DRAM Voltage, and PCH Voltage?
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post #4 of 7
Your asus board has an overclock feature in bios, why not try that?
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post #5 of 7
Quote:
Originally Posted by 35g700 View Post
I don't see anything labeled "VTT"

What about IMC voltage, DRAM Voltage, and PCH Voltage?
IMC is VTT.

try 1.3v on a P55 first (for 4Ghz)

DRAM is ram voltage (set that to 1.65)

So everything looks like this:

Load-Line Calibration: Disabled
Vcore= 1.35V
QPI/Vtt/IMC= 1.30V
PCH= 1.10V
PLL= 1.88V
RAM= 1.65V

also remember to disable C1E, C3/C6/C7 and EIST if you haven't done that already
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post #6 of 7
Thread Starter 
Alright, I just ran Intel Burn Test at those settings and got a BSOD. Should I increase the CPU voltage?
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post #7 of 7
Quote:
Originally Posted by 35g700 View Post
Alright, I just ran Intel Burn Test at those settings and got a BSOD. Should I increase the CPU voltage?
try 1.35 VTT
and 1.40v vcore.

surely that should work
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