Homebuilt computor, installed is.....512mbx2 Kingston DDR 333 PC2700.
Motherboard is Microstar MS9130, 2 mem slots in use and 2 slots available,
running 2 AMD processors, inquiry on dual channal says NA, not sure if I can use 2 more in 1 Gig size or stop at 2 more 512mb. Right now my video download is a little choppy. Am I missing any specs required for mem to buy to work in system?
Appreciate your thoughts....R CStandard Memory 0 MB (removable)
Maximum Memory 8.0 GB
Memory Expansion 4 sockets (2 banks of 2)
Memory COMMENTS PC2100/2700/3200 REGISTERED ECC DDR SDRAM DIMMs.
CPU Type AMD Opteron DP, UP, Athlon 64 FX 51
Model Comments 800MHz FSB, VIA K8T800 Chipset, ATX Form FACTOR

Your motherboard accommodates 8 GB but your OS will only be able to use about 3.5 GB so 2 GB should be fine. I would try to add the same Kingston PC2700 only in 1GB modules . I'm not sure what you MEAN by your video download being choppy, but more memory MAY not help with that. It's certainly not going to hurt anything though.My system runs xp pro at 32 bit, was not sure about, SDRAM and DIMMS,