Help me overclock my CPU

3 replies [Last post]
Elmex8
Elmex8's picture
Offline
Joined: 04/23/2009
Posts: 140

Well, I got a Corsair H50, so I thought I'd start overclocking my CPU.
I got a Core i5 750 at 2.67Ghz running idle at 36C. My motherboard is an Asus P7P55D Deluxe, and I cant find any guides to this specific line of motherboards. My power supply is 700w (rest of build in signature). What would be a safe start? And how do I actually overclock?
Thanks to all the helpers.

Cooler Master HAF 922 | Intel Core i5 750 stock clock | ASUS P7P55D Deluxe | Corsair XMS3 DDR3 4GB |
Asus HD5770 Cu Core | Corsair H50 Cooler  |Windows 7 Ultimate 64 bit | Microsoft Habu |
Logitech Classic Keyboard | Cooler Master 700W Silent Power | ASUS VH236H 23inch |

fizzylumi
Offline
Joined: 03/29/2010
Posts: 52

overclock CPU

Say you want 3400MHz

Calculate BCLK:
3400/20=170

Calculate Memory "1333MHz":
1333/170=7,8=8
BCLKx8=170x8=1360MHz
Select DRAM DDR3-1360

Memory multiplier:
UNCOREx2=8x2=16
BCLKxUNCORE=170x16=2720
Select UCLK 2720

QPI:
UNCORE/QPI=8/9 "QPI 18(36)"
BCLKxQPI=170x36=6120MHz

Note:Turn off turbobust!

Note:
Go to http://www.asus.com/entryflash.htm
And search Asus-forum for more info about voltage and OC settings for youre motherbord and CPU. You have to set voltage manualy or you might damage youre system, runing anyting out of specs is a risk business!

Note:
It is critical that you add to youre cooling capacity for bouth CPU and MOBO, overheating can damage youre system!

TEST1:
Set CPU back to 12
Memtest
http://www.memtest.org/

If test 1 is OK..

Test2:
Set CPU back to 20
Prime95 (8 hours)
http://www.playtool.com/pages/prime95/prime95.html

I take no responsibility for YOUR actions!!!

Take care

AFR – Alternate Frame Rendering/Annualized Failure Rate!
http://en.wikipedia.org/wiki/Alternate_Frame_Rendering

Elmex8
Elmex8's picture
Offline
Joined: 04/23/2009
Posts: 140

didn't get any of that lol. i was just asking for basic advice on what should i raise, and by how much. For example, per every how much MHz of FSB should I raise the voltage. And when should I start testing the CPU - Even after raising a low amount of FSB?

fizzylumi
Offline
Joined: 03/29/2010
Posts: 52

You can`t raise the voltage more than the spesifid limits of youre CPU and MOBO and/or the cooling capacity of youre system. This will determine the limit of youre OC.
Your goal is to find the absolute minimum voltage to keep system stable and cool.

You need to do some research on this topic youre self. Pleas visit asus forum for more info.