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Memory timing help

post #1 of 14
Thread Starter 
New to overclocking and all but i have my e8400 overclocked to 4ghz and my ram at 890mhz 1:1. Timings on my ram are currently 5-5-5-15. So i was wondering if i could just go into the bios and change the timings to 4-4-4-12 then run memtest86+ and if i get no errors am i good to go?
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post #2 of 14
thats how its done. if it boots up, and you pass memtest, you should be good.
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post #3 of 14
Thread Starter 
how long is memtest usually?
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post #4 of 14
i dont know off hand, i just ran it overnight, and though it was good enough. i've read where others recomend running like 3 passes. but like i said, i dont really know how long a "pass" is.
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post #5 of 14
Thread Starter 
well i changed timings and it wouldn't boot up
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post #6 of 14
That means your timings are too tight and the ram cant handle it. It would be like trying to boot up at 4.0GHz with your E8400 on stock vcore, it just wont happen. Unfortunatley the G.Skill 1000 set dont respond to any increase in voltage above 2.1v, so I would not recommend increasing the voltage to the ram (you have it at 2.04v since the board overvolts by .06v).
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post #7 of 14
Thread Starter 
i could try 5-4-4-12 like you said
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post #8 of 14
Very unlikely you'll get CAS 4 to work at that speed.

Try 5-5-4, then if that's stable, there are a bunch of other options.

5-4-3 did just as far as 5-4-4 with my Mushkin IIRC.

If you can tighten PL (Performance Level) aka tRD, that will provide a large performance boost also.
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post #9 of 14
if you loosen the timings you can get it to run higher. i currently have mine at 5-5-5-15 at 1040mhz.
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post #10 of 14
Quote:
Originally Posted by spacegoast View Post
if you loosen the timings you can get it to run higher. i currently have mine at 5-5-5-15 at 1040mhz.
If his mobo has 5:6, then he'd be at DDR2-1068...

Likely going to be a stretch if that's the G.Skill PQ DDR2-800 5-5-5

I'd like to see him try though...maybe it'll do it
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