I'm just not sure of what I need, and can't seem to find any site that will tell me the difference between PC2-4100, 4200, and 5300. What are their speeds (in MHz), for example?
Dell says this about my computer:
The four memory module connectors on the system board can accommodate from 256 MB to 4 GB of 400/533-MHz unbuffered ECC DDR II memory modules.
Memory Module Upgrade Kits
The system is upgradable to 4 GB by installing combinations of 256-MB, 512-MB, or 1-GB 400-MHz or 533-MHz unbuffered ECC DDR II memory modules.
NOTICE: If you remove your original memory modules from the system during a memory upgrade, keep them separate from any new memory modules that you may have, even if you purchased the new memory modules from Dell. Use only unregistered or unbuffered ECC DDR II memory modules.
I checked Crucial.com and they say that my machine can use DDR2 PC2-4200 or 5300 -- no mention of 4100. They also say that I can use ECC or non-ECC, though Dell says I need ECC. However, what I have in there now (according to their system scanner) is 2x1GB PC2-4100, and I believe it is non-ECC, brand is Corsair. It doesn't even look like Crucial sells that type (PC2-4100) at all.
I have 2 free slots that can handle 1GB each, and that's what I'm looking to get, but I just want to be sure that I make the best choice to maximize both performance and value. I am not a gamer, but I run Vista. The most taxing thing I do is run video editing software occasionally.
Any help that you experts can provide would be greatly appreciated. Thank you!