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Overclocking intel c2d e4400

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September 12, 2010 7:09:09 PM

Hello. I am overclocking my pc for the 1st time and before playing with the vcore I need some guidance.
So far I have overclocked it to 2.3GHz - 230FSB x 10 multiplier, Memory clock 460 but I don't like running
memory at 960MHz and I am not sure if the system will boot if I change the FSB:memory multiplier to 2 in
BIOS ( 230MHz memory clock instead of original 400MHz ).

My PC configuration:
CPU: intel c2d e400 @ 2.0GHz - 200 FSB - vcore 1.325
Motherboard: gigabyte GA-P35-S3l
Memory: 2GB DDR2-800 Qimonda 64T256020EU2.5C2
Stock cooler

The temperature I got when ran prime95 for 30mins:

1) at 2.0GHz
57C - cpu
67C - cpu cores
Idle temps: ~30C cpu and 40C cpu cores.

2) at 2.3GHz
60C - cpu
70C - cpu cores
Idle temp are ~32C cpu and 43C cpu cores.

I have used everest ultimate edition v 5.50 to get these temps.

In BIOS I have so far chosen auto on the FSB:RAM ratio. However I don't want to
push things too much because I don't know if it's ok to run DDR2-800 at 920MHz
without damaging it.

Before I go to 2.66GHz(266.66 x 10) I would like some advice on what settings to use.

I was thinking to up the voltage of the vcore a bit but I don't know by how much.
As for FSB:RAM ratio I am thinking of choosing a multiplier of 3 to make the ram run at
800 MHz(266.66x3). Is this a good thing to do?

Every advice is appreciated.

Thank you in advance :) 
a c 172 à CPUs
a c 197 K Overclocking
a b } Memory
September 12, 2010 8:15:29 PM

This should be your first stop.
Core2 Overclocking Guide
http://www.tomshardware.co.uk/forum/259899-11-core-over...

Shadow's Gigabyte motherboard OC guide:
http://www.tomshardware.co.uk/forum/page-245679_11_0.ht...
It's for an EP35-DS3L .

Go through the guides. Then take your core voltage off Auto and set your memory voltage to factory recommended values. Change the System Memory Multiplier (or whatever your BIOS calls it) from AUTO to 2.00, 2.00B, or 2.00D - whichever you need to set the Memory Frequency to twice the FSB. Then when you increase the FSB, the memory clock will rise in in proportion with it. At an FSB of 200 MHz, your memory clock should be at 400 MHz.

Download CPU-Z to check your FSB:RAM ratio. It should be a 1:1 ratio. Running with a higher RAM ratio will not significantly help performance and it can contribute to instability.

We discuss overclocking RAM here:
http://www.tomshardware.com/forum/251715-29-ratio-myth

If you are going to push the CPU any significant amount, you will need better than stock cooling.

Don't exceed 1.5 volts vcore or 70 C core temps.
!