i've just added an extra 128MB crucial RAM to my pismo 500. the crucial is 2-2-2 whereas the built in RAM is 3-2-2. while i've no idea what this means, i seem to remember reading elsewhere on the forum that 2-2-2 RAM is faster and/or better. is there a noticeable difference and if so should i swop the 2-2-2 into the top [ie. pre-installed] slot, as this will presumably be the RAM that is used by the OS and doled out to other apps first?

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[spicyjeff]

Search the forums, this has been discussed in easily over 50 threads.

[Chris_G]

I just posted this, but again:

222 vs. 322: This refers to the latency speed of the DIMM with 2-2-2 being faster than 3-2-2, 2-2-2 is the fastest, 3-3-3 the slowest. The first number is the CAS Latency, the second number is the RAS to CAS Delay, and the third number is the RAS Precharge Time, with each time being a 2 or a 3. CAS Latency is the latency between the read command and time the data becomes available.?S Precharge Time is the amount of clocks after a precharge command has been issued.?nally, the RAS to CAS Delay is the latency between the active command and the read/write command.t best, the 2-2-2 RAM is slightly faster than the 3-2-2 RAM, and only in RAM intensive applications... in fact the difference may not even be noticeable.

Hope this helps!

Cheers!
Chris

[giantmike]

There really is no difference in real world tests. Benchmarks may produce 1-2% speed increases, but nothing to get giddy about. I say, buy the cheaper slower RAM.

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