I have a pile of 2 GB ECC DIMMs that came out of servers that were upgraded to higher density memory and want to know if I can use this memory in desktop PCs. Google says yes but the motherboard manufacturer's website says it supports non-ECC memory only.
I tried to pop in a module to see if it would recognize it, but it appears that the modules are physically different. That is to say that the key in the memory slot on the motherboard fits the existing non-ECC memory, but the ECC memory pulled from the servers has it's corresponding slot about half a centimeter away so the slot and key won't line up.
I thought the only different between ECC and non-ECC memory was the additional parity on the DIMMs? I've verified that both memory modules are 240 pin DDR2 PC2-5300. The only difference is that one module is buffered, ECC and the other is unbuffered, non-ECC.
Are the two types of memory physically incompatible or am I missing something?