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4-4-4-12 to 4-4-4-3 Timings - Page 3

post #21 of 27
Quote:
Originally Posted by gonX View Post
Yeah, but tRAS pretty much just puts a delay on the RAM access so it SHOULD be slower with it on something high than something low, though benchmarks says otherwise.
Found the article: http://www.techpowerup.com/printarticle.php?id=131

The issue is if it is too fast, it deactivating the row too soon
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post #22 of 27
Quote:
Originally Posted by gonX View Post
Yeah, but tRAS pretty much just puts a delay on the RAM access so it SHOULD be slower with it on something high than something low, though benchmarks says otherwise.
If your CAS and RCD are higher anyway, having a lower tRAS will not yield you any performance gain or bandwidth gain practically.
    
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post #23 of 27
Sorry if this is a little OT but... Does anyone know if the tRCD timing of 3 on a P965 chipset mobo is bugged? I don't recall where I read that, I think maybe over at XtremeSystems. I'll probably play around with some timings later and figure it out for myself anyway.

For my SuperPI 1m runs my g.skill memory runs 4-4-4-5 slightly faster than 4-4-4-12. Granted its quite negligible, the difference is only 2/100ths of a second .
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post #24 of 27
Thread Starter 
Quote:
# The lower this is, the faster the performance, but if it is set too low, it can cause data corruption by deactivating the row too soon. tRAS = tCL + tRCD + tRP
According to Duckie's site, I should be running at 12 tRAS.

What programs can I run to test my timings performance? SuperPi doesn't always say the exact same times if you keep running it over and over sometimes.
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post #25 of 27
Quote:
Originally Posted by TaiDinh View Post
My stock timing is 5-5-5-15. I can run it at 4-4-4-12. I can also do 4-4-4-3 without any voltage changes.

I would like to know how much greater is 4-4-4-3 over 4-4-4-12.
Taidinh, I don't notice the difference between 5-5-5-15 and 3-3-3-7 on my computer. Timings don't affect C2D that much at all. I wouldn't worry about it.
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post #26 of 27
Quote:
Originally Posted by TaiDinh View Post
According to Duckie's site, I should be running at 12 tRAS.

What programs can I run to test my timings performance? SuperPi doesn't always say the exact same times if you keep running it over and over sometimes.
I am not 100% sure those are correct. Memory timing is tricky. You want to make sure you are stable... Did you run MemTest86+ overnight?
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post #27 of 27
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
I am not 100% sure those are correct. Memory timing is tricky. You want to make sure you are stable... Did you run MemTest86+ overnight?
No, I still don't know how to use it, lol. I'll give it a shot later. I just woke up.
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