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I have an old desktop PC which has a P4M900T-M2 motherboard. It currently has one Apacer DDR2-667 memory module but the motherboard can support two DDR2 memory modules. I'm planning to upgrade it to have 2GB of memory (1GBx2).
My question is, do I need to have two identical memory modules?
Or will it work fine if I just install a different one to be paired to the existing one?
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The motherboard manual doesn't say anything about memory stick pairing compatibility. Although, in the manual, there is a section for memory module Qualified Vendor List. Does that also mean if I avail a pair of memory sticks from any on that list, there's a guarantee it will work?
– Abel Melquiades Callejo – 2014-05-22T13:02:48.917In my experiences, the QVL is pretty accurate. You should feel comfortable installing a memory module from the list. – rrirower – 2014-05-22T13:06:53.707