Simple OC E5200 from 2.5 to 3 on stock

April 15, 2011 at 15:32:04
Specs: Windows 7, e5200
Hello.
My spec:
MB: Asus p5ql-e
Cpu: E5200
RAM: Kingston 800MHz DDR2 4GB
VGA: ATI 4850

My question would be that what am I suppose to change in my bios in order to try running my cpu on 3GHZ, also not hurting my rams and stuff.. thanks for you help


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#1
April 15, 2011 at 17:01:08
Two things you need to know - (1) the faster the FSB, the better the performance, (2) it's best to maintain a CPU:RAM frequency ratio of 1:1.

You have a nice setup for overclocking. Your board natively supports up to 1333MHz FSB or 1600MHz FSB by overclocking. The E5200 default clock settings are 12.5 x 200MHz (800MHz FSB), so to run it at 3.0GHz, I suggest 9 x 333MHz (1333MHz) with the RAM dialed down to 667MHz

Something like this:

Ai Overclock Tuner = manual
FSB Frequency = 333MHz
PCIe Frequency = 100MHz
FSB Strap to NB = 333MHz
DRAM Frequency = DDR2-667
CPU Spread Spectrum = disabled
PCIE Spread Spectrum = disabled
Ratio CMOS Setting = 9


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#2
April 15, 2011 at 17:27:18
Lock your PCIe at 100
Disable spread spectrum and C' states
Set your Freq. from 200 to 333
Set your Multiplier to 9
set your memory ratio at 1:1 or memory multiplier at 2
This will give you:
FSB 1333 (333x4)
CPU at 2.997 (333x9=2997) or effectively 3GHz
RAM underclocked to 667 to maintain Ratio of 1:1
Monitor your temps in Speedfan and your numbers with CPU-Z.
If you need to, raise your VCore a small increment, but only if you need to for stability. Test stability with Prime95. If everything tests stable and your temperatures are low enough, you can even try a multiplier of 10 for a 3.33GHz CPU without touching anything else, except possibly VCore for stability. Note that a higher voltage will also mean a higher temperature, so watch them carefully. If you have stability problems try a lower multiplier and see if that gets you stable, if not, then some other setting is off.

You have to be a little bit crazy to keep you from going insane.


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#3
April 15, 2011 at 17:29:13
I walked away for a couple of minutes, and apparently it was already answered. Nice to know we agree though.

You have to be a little bit crazy to keep you from going insane.


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#4
April 16, 2011 at 07:03:13
Yes, nicely done :)

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