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Changing RAM timings to help with OC?

post #1 of 5
Thread Starter 
I heard somewhere that you could scale back the latency of your RAM to help with overclocking somehow? The reason I ask is I have a E6420 with Corsair Twinx XMS pc-5300 667MHz DDR2 RAM(4-4-4-12 timings). I can't upgrade my RAM anymore as this system was just put together and I am out of cash

I can clock my C2D from 2.13Ghz to 3.112, but that is as far as I can go before it won't boot. I saw in another thread that my memory I think is 266mhz so around 3 GHz is the maximum it could go to.

My CPU clock is set to 8 and can only be lowered(6 or 7) so I am just trying to see if I can get another 200-300 mhz out of this as my temps run 44C under full Orthos for 8 hours.

Would changing it to 5-5-5-15 etc make a difference or do I just not understand RAM overclocking?
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post #2 of 5
You understand it correctly

Changing timings to 5-5-5-15 might indeed help you to overclock that RAM a bit more. Also, you could give it a little extra voltage. I think that RAM is rated at 1.9V stock, so try like 2.1V or so.
    
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post #3 of 5
Thread Starter 
I guess the question then comes.....Would 3.3-3.4GHz CPU make that much of a difference over 3.113, or more importanly would RAM at 4-4-4-12 be noticeably faster than 5-5-5-15.

I don't want to split hairs here. I already increased my 3dmark score from 14000 to 17000 and reduced superpi from 23 seconds to 16, just with the 1GHz overclock. So if the change wouldn't really be that noticeable I might just leave it as is.

Just curious as I have never played with RAM timings that much.
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640GB WD AAKS, 200GB Maxtor 16X DL w/Lightscribe Win7 x64 19" CRT 
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post #4 of 5
in what, it really depends on the application, more over the extra CPU speed wil help more but only if the RAM can keep up but afterwards you can also tighten down your RAM timings, I personally utiilize a stable OC of 3.2GHZ on my CPU and have a 2:1 ratio with my RAM @ 4-4-4-5 @ 2.3v so overall my system performs very well for things such as super pi, folding, wprime, etc. but in your case it depends what all it will be doing...
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by H3||scr3am View Post
in what, it really depends on the application, more over the extra CPU speed wil help more but only if the RAM can keep up but afterwards you can also tighten down your RAM timings, I personally utiilize a stable OC of 3.2GHZ on my CPU and have a 2:1 ratio with my RAM @ 4-4-4-5 @ 2.3v so overall my system performs very well for things such as super pi, folding, wprime, etc. but in your case it depends what all it will be doing...
This is just a gaming machine. I will use it for some DVD editing and such later on....but right now it does nothing but game, watch some TV playbacks and run WinRAR and QuickPar.
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Intel E8400 @4Ghz EVGA 780i XFX HD 5850 4GB G.Skill@900Mhz 1:1 Synced 
Hard DriveOptical DriveOSMonitor
640GB WD AAKS, 200GB Maxtor 16X DL w/Lightscribe Win7 x64 19" CRT 
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My system
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CPUMotherboardGraphicsRAM
Intel E8400 @4Ghz EVGA 780i XFX HD 5850 4GB G.Skill@900Mhz 1:1 Synced 
Hard DriveOptical DriveOSMonitor
640GB WD AAKS, 200GB Maxtor 16X DL w/Lightscribe Win7 x64 19" CRT 
KeyboardPowerCaseMouse
Logitech Multimedia Ultra X3 1000w CM 690 Roccat Kone v2 
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