About CAS

eric92park

eric92park

New Member
Okay, I am confused with CAS latency.:confused:
If your Memory RAM has low cas latency your system performs better right? I heard that 2~3 is a good range of cas latency, but most memories have 4~5 cas latency...
Also I was trying to understand this and one thing that confused me more was MHz of the memory. The lower the memory's CAS latency, the lower the MHz were in most memories.
Also memory with higher CAS had better MHz and most of them are 1GB~2GB sticks. So I'm confused and I'm too scared to buy memory for my upcoming comp, someone help or tell me which memory sticks to buy? (Im going to use with Striker Extreme and Intel Core 2 Quad 2.4GHz)
I need 2 GB at least (or 4GB)
 
For high performance DDR2 you are only going to see CAS latencies of 4. Most DDR2 runs at CAS4 or 5 anyway. The speed of DDR2 makes up for it having higher latencies.
 
Honestly, for DDR2 systems you shouldn't worry about CAS timings. My RAM is sitting at 5-5-5-12 now, and I see no performance increase over my friend's system who runs 4-4-4-12.
 
Yes. It's expensive because it is new, DDR2 was expensive when it was all new and shiney too. The same thing is true wth DDR3 though, the timings will be fairly well covered by the sheer clock speed. If you calculate it out, the actual latency in nanoseconds it's not that high at all. (~13.5ns, where as DDR-667 CL4 is 12.0ns)
 
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