Solved Can i run ddr400 in place of ddr2 Tags: Memory DDR2 Presario RAM Compaq Last response: August 18, 2010 6:09 AM in Memory Share Burshwin August 7, 2010 11:20:47 PM Hi. I have a compaq presario running 256MB of DDR2 Ram. I have a 2GB DDR400 module. Can I use it? Will it improve performance? More about : run ddr400 place ddr2 COLGeek a b } Memory August 7, 2010 11:33:05 PM No, DDR is not compatible with DDR2 and vice versa. Sorry. m 0 l Burshwin August 7, 2010 11:43:36 PM Thanks GOLGeek m 0 l Related resources Where's the best place to buy tested DDR400? - Forum Can i use DDR2 AND DDR400 at the same time? - Forum Is ddr400 compatible WITH DDR2 and - Forum install ddr400 coupled with ddr2 533 - Forum Can I put DDR-400 into a DDR2 mobo? - Forum Can't find your answer ? Ask ! Get the answer COLGeek a b } Memory August 7, 2010 11:50:08 PM You are most welcome. m 0 l Best solution jitpublisher a b } Memory August 8, 2010 1:02:14 AM Well, not only is it incompatible, you cannot physically plug one into the others slot, they won't fit. Share Burshwin August 18, 2010 6:09:10 AM Best answer selected by Burshwin. m 0 l Can't find your answer ? Ask ! Publish Related resources 4x 512 ddr400 ram vs 2x1gb ddr2 667/800 ram? Forum G.Skill DDR400 Cas 2.5 or new DDR2 high latency? Forum DDR2 from Dual DDR400 Forum DDR400 vs DDR2 800 Forum DDR2 533 memory on a DDR400 board. Will it go? Forum DDR2 or DDR400? Forum Solvedhow to make street fighter 4 run faster on 512 mb ddr2 graphics Forum SolvedCan I run NFS most wanted 2012 on this Pentium Dual core processor 2.30GHZ 1Gb Graphics 2gb ddr2 ram Forum SolvedCan DDR2 667 run on my mobo? Forum Is it possible to use DDR2 Ram in place of DDR? Forum Solvedcan I run ati hd 6670 1gb ddr3 on my asus p5g41c-m lx mother board? I have intel core2 duo e4400 2GHz processor, 2GB ddr2 RAM Forum Can I install DDR2 PC2 -6400 in place of DDR2 PC2 5400? Forum SolvedDDR2 Running at 333MHz? Forum Can i run pc133 and ddr400 ram on the same motherboard? Forum SolvedPlacing a wifi card in a pci-e x 4 or x8 will cause my GPU to run at x8? Forum More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !