What is this CAS latency and timing in DDR2 memories?
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    What is this CAS latency and timing in DDR2 memories?

    OK, what are these CAS Latency and Timings for DDR2 memories.. I'm confused.. Which one should I go with for a E6700 +ASUS P5W DH combination? I see numbers like 4-4-4-12, 5-5-5-15?? I'm guessing lower is better but?? Help!

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    Senior Firefly
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    Re: What is this CAS latency and timing in DDR2 memories?

    Lower is better, you are right about that. It's timing in nanoseconds I believe.

    As for more specifics, I can't explain that right now. Someone will respond soon enough - or go to www.rojakpot.com

    I only answered just so you can go for the lower latency device (in case u wanted to not wait to buy)

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    Re: What is this CAS latency and timing in DDR2 memories?

    Haha thanks mate for the quick reply :D

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    Re: What is this CAS latency and timing in DDR2 memories?

    Lower is better, but right now I'd say the sweet spot for price/perf is 6400-C5, if you're an OC freak then get higher bandwidth modules

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    Proxycon Emperor Unstoppable beta tester
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    Re: What is this CAS latency and timing in DDR2 memories?

    I'm running the 6400 C5 at 300 (600DDRII) but at 3-3-3-12-16-2t because it gives me more effective bandwidth.

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    Re: What is this CAS latency and timing in DDR2 memories?

    Quote Originally Posted by Meaker View Post
    I'm running the 6400 C5 at 300 (600DDRII) but at 3-3-3-12-16-2t because it gives me more effective bandwidth.
    I don't see how thats true, with the G-Skill HZ at cas3 the bandwidth increase is extremely small.. around 400mb/s at the most and that was at 400MHz.. I get a much larger increase lowering to 4.4.4.12 and increasing the speed. At 458Mhz now and its around 1000mb/s faster then the memory at 400Mhz using cas3.
    Last edited by Shock_Hunter; 08-14-2006 at 01:50 PM.

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    Re: What is this CAS latency and timing in DDR2 memories?

    Well im not sure how sandra reports it, if it gives your speed and then how much of that you are uning effectivly or how much of the theoretical your seeing.
    Last edited by Meaker; 08-14-2006 at 03:20 PM.

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