Hi. Ok, so...
I'm looking to get the best deal I can on RAM by buying second hand on eBay; I have a very limited budget which I'm willing to spend on RAM or else I won't buy any at all. I'm looking for 2x1GB RAM. Because I'm looking for a good deal, I need to be as flexible as I can, so I need to know exactly which specs actually have to match in order for new RAM to be compatible with my PC.
Using the information on my presently installed and fully functional RAM, alongside recommendations from the DELL website, and the 'crucial' scan, I bought on eBay some RAM which I thought should be compatible with my PC. Well, it wasn't compatible, as the notches did not line up.
I will now provide all the information I have available to me regarding the RAM I currently have in my computer, and then all the information I have regarding my newly purchased and incompatible RAM. What I hope is that someone here, who understands what all the different RAM specs refer to, will be able to tell me exactly which specs I have mismatched thus leading to the incompatibility of my purchased RAM with my PC. The reason for this is so that I can use this new knowledge to return to eBay and this time purchase correct RAM, but with as much flexibility as possible regarding the specs which do not need to match.
If however, it is the case that all of the essential information regarding the newly purchased RAM does indeed match with what SHOULD be compatible with my PC, then by deduction the eBay seller must have in fact provided me with incorrect information regarding his RAM, and I must therefore go and purchase new RAM using the same parameters, and just hope I am provided with correct information next time from the relevant seller.
Fully function RAM in my PC already:
(2x) Crucial: 512mb; 240-PIN; UNBUFF; DIMM 64MX64; DDR2 PC; IRX8; PC2-4200U-444-12-ZZ; 533; CL4
(2x) Nanya: 256mb; 1Rx16; PC2-4200U-444-12-C1
Crucial Scan Results: http://www.crucial.com/systemscanner/viewscanbyid.aspx?id=2201BD5031D926C3
DELL website results: http://accessories.us.dell.com/sna/category.aspx?c=us&category_id=6436&cs=04&l=en&s=bsd&mfgpid=167500&chassisid=8238
Newly purchased RAM, incompatible with my PC:
(2x) Elpida - Limited information on cards themselves: 1GB; 2Rx8; PC2-5300F-555 11B0
Information on eBay product page:
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There, that is now all the information I have at my disposal. It should be plenty enough information that someone who has a good understanding of RAM should be able to provide me the advice I desire, and need in order to move forwards. I apologise to anyone who feels the prelude lacks concision, but I wanted to make sure my requirements were fully understood as I've already tried to ask this question at the pchelpforum.com with so far unfruitful replies.
Many Thanks,
Miles.
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