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What are the best memory timings and what effect do they have on performance?

Discussion in 'Motherboards & Memory' started by JC316, Mar 17, 2006.

  1. JC316

    JC316 Knows what makes you tick

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    The title pretty much says it all. I have 2 512MB sticks of unmatched memory and my timings are 2.5-3-3-6. Is this good or bad and why? Thanks.
  2. Jimmy 2004

    Jimmy 2004 New Member

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  3. zekrahminator

    zekrahminator McLovin

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    In games, you won't notice TOO much of a difference between fair timings and good timings. maybe one or two fps, but otherwise nothing to worry about. make sure those memory timings are 2.5-3-3-6 at DDR400, or else you're really not getting too much out of your memory. You really will notice memory differences in benchmarks though...lol
  4. Azn Tr14dZ New Member

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    In some games they actually do matter, especially in games like F.E.A.R. That game really takes advantage of memory timings and amount of memory. It also runs better with 2 or 4GB of RAM. Those are good timings though but in some graphically intense games memory timings and amount will matter.
  5. Sasqui

    Sasqui

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    Totally agree about fear - it's a memory HOG. With 1GB, every time you turn a corner, it has to load new texture maps, etc into memory. With 2GB, it's good. I actually tried it with 512 and it was almost unplayable.

    Sorry, that was OT regarding the memory timing question! CAS 2.5 is quite good at DDR400, and very good at DDR500. The other numbers are not as important but 3-3 is quite righteous. The last number is almost not worthy of paying attention to.
  6. Azn Tr14dZ New Member

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    Wait, how come most DDR2 RAM has slower timings? My timing is 3-3-3-8, but I know some people I do LAN with that have Intel setups, they have 4-4-4-10? Why is this with DDR2.
  7. JC316

    JC316 Knows what makes you tick

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    It's PC2100 Ram, but I have it OCed from 266 to 275. One stick's timings are 2-3-3-6 and the other is 2.5-3-3-6. What could I do to make things better, other than getting different RAM? Thanks for the info.
  8. Jimmy 2004

    Jimmy 2004 New Member

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    Ouch! You can't do an awful lot without changing your RAM and I would recommend that you do. PC2100, even when overclocked, is just slow.
  9. JC316

    JC316 Knows what makes you tick

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    Hmm, thats what I thought. Could that be the reason that Doom3 doesn't run as good as I had hoped? I barely saw an increase from a Geforce FX 5900 to my Radeon X850 Pro, I was thinking it was my CPU. The doom 3 timedemo only runs 45-50 FPS at 1024x768 with no AA.
  10. Jimmy 2004

    Jimmy 2004 New Member

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    In my opinion it does look like the biggest bottleneck.

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