Can you mix DDR modules of different sizes?

Question

I have a 128MB DDR and a 256MB DDR memory stick but my motherboard only have 2 slots for memory.

Can i have the 256 in 1 slot and the 128 in the other slot?? or do they need to have the same capacity in both slots??

Heres a link to my motherboard manual

http://www.unitycorp.co.jp/support/download/manual/478/p4s333_m_e.pdf

1 more question...what does non-ecc mean????

Tks.

Answer

This question was answered on January 12, 2004. Much of the information contained herein may have changed since posting.

After careful review of your motherboards manual, I can tell you that YES you can place the 256 chip in one slot and the 128 chip in the other slot, they do not have to be paired like on some motherboards - so long as the memory modules are both 64MB,128MB,256MB,512MB,1GB combination.

As far as your second question:

ECC stands for Error Correction Code It is similar to Parity, but more advanced It can detect multiple errors in data returned from memory and actually correct a single error ECC memory has 8 extra bits to support the ECC The System board to be used must support ECC, and all of the memory in the system must be ECC for it to be actively supported Your system board specifications will tell you whether or not you can use ECC

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Author

Posted by Student of Katharine Gibbs School - New York on January 12, 2004