Howto Guide: Overclocking C2D/C2Q Processors (v1.6)

[graysky]

Version is now 1.5.2 (updates in first post)

[Trouz0rz]

Originally Posted by graysky

3. Memory
You will need memory that's designed to handle increased FSB values. There are tons of different options out there. Again, not wanting to keep a list I’d encourage you to search these forums and google. Here are some general features to look for in DDR2 RAM:



The 667, 800, or 1066 refer to the max speed (front side bus in MHz x the divider) for which it's rated. It's a little more complicated... these are DDR2 type so you divide those numbers by 2. So you'll get 667/2 = 333 MHz; 800/2 = 400 MHz; and 1066/2 = 533 MHz. The CPU : DRAM divider is discussed later in this document. If you want to run a FSB of 400 MHz then you’ll need AT LEAST DDR2-800. The same rule applies for the newer DDR3 memory. That is, divide that last number by 3 to get the max FSB. For example, DDR3-1333 and DDR3-1600. 1333/3 = 444 MHz and 1600/3 = 533 MHz.

ok, well ive got a c2d t7250 with an 800mhz fsb in my laptop, but 2gb of ddr2-667 ram.....

does this mean my fsb is being limited?

[graysky]

Originally Posted by Trouz0rz

ok, well ive got a c2d t7250 with an 800mhz fsb in my laptop, but 2gb of ddr2-667 ram.....

does this mean my fsb is being limited?

No, because the FSB on the T7250 isn't really 800 MHz. That's the "quad pumped" number, so you take 800/4=200 MHz FSB. Your DDR2-667 will do at least 667/2=333 MHz.

[Lacus]

Too bad for Intel platform . Any guides for AMD platform?

[graysky]

Originally Posted by Lacus

Too bad for Intel platform . Any guides for AMD platform?

The steps are more or less the same...

[Lacus]

Well, yeah..Almost.. Lucky my proc is a multiplier unlocked. Much easier to oc compare to normal processor

[graysky]

OK, just got finished upgrading the guide to version 1.6!

• Added a detailed section to help you find the minimum stable CPU and MB vcore settings. Check it out (near the bottom of the guide entitled, “Stress Testing and Minimizing Your Vcores”)!
• Updated the CPU table
• Provided a less than $5 method you can use to shave off some NB load temps (in the thermal management section at the end of the guide).

[Mac Daddy]

Thanks for the update man still reading through this its good reference

[Adrian Wong]

I'll update the title for you.

[graysky]

Originally Posted by Adrian Wong

I'll update the title for you.

Cool man, I noticed it was stuck