I currently have 1 gb of ram and thinking of increasing the ram to install vista. The ram that is currently in my computer is PC3200 DDR400. While looking through sites, I found out there are others like the more faster DDR2. It seems that the DDR2 is much more cheaper nowadays. This is my motherboard: http://www.asus.com/products.aspx?l... It was top of the line when I bought it in 2003. Will the DDR2 work with this motherboard I have? I heard some people say the DDR2 will work, but it just wouldn't run at the maximum speed. Any ideas? Thanks

According to Crucial, you can only use DDR. http://www.crucial.com/store/listpa... Sometimes I think I understand everything, then I regain consciousness

SDRAM : 168 pins DDR1 : 184 pins DDR2 : 240 pins SO-DIMM SDRAM : 144 pins SO-DIMM DDR1 : 200 pins SO-DIMM DDR2 : 200 pins Short answer. NO you cannot use DDR2 in a desktop board designed for DDR. I used to have a signature but it disappeared and I just couldn't be bothered writing another so please feel free to ingore this.

The only way you could use DDR2 on a DDR1 motherboard is if it's a split DDR platforum that consist of DDR1 and DDR2 slots but even with that said you can only use either or and not both at the same time. You can't put DDR2 in DDR1 slots and vise versa, because like the post above said their pins are not onlt diff, but the voltage on the ram is diff and the notches are diff. You can't put any next generation ram in a last generation slot and vise versa. AMD Athlon 64 X2 4400+ OC 2.7ghz 4GB Dual Channel DDR 3200 Nvidia 7900GT SATA II 2x 300gig 7200rpm 16mb cache RAID-0+1 Gigabyte Nforce 4 SLI

You can't, but dual channel DDR400 is slightly faster than dual channel DDR2-667. DDR1 has a much lower latency. Pentium III--Descendant of Intel Core. Pentium III-S 1400 @ 1.63GHz, 512K L2 X800XT AIW OC 580/600 2GB of RAM 250GB HD SB Audigy 2 QDI Advance 12 mobo Smugly running Vista

http://adterrasperaspera.com/blog/2... http://www.planetamd64.com/index.ph...

DDR vs DDR2 preformance applies a litte diff with AMD 64 systems because of it's onboard memory controller. The preformance on the AM2+ AMD 64 processors using DDR2 is a little better then S939 AMD 64 processors using DDR, but that's due mostly inpart of an improved onboard memory controller on the AM2 AMD 64 processors and not soo much that it uses DDR2 alone. Which was one of the reasons why AMD stuck with DDR two years longer then Intel, because it didn't need DDR2 like Intel did at the time, thanks to it's onboard memory controller. AMD Athlon 64 X2 4400+ OC 2.7ghz 4GB Dual Channel DDR 3200 Nvidia 7900GT SATA II 2x 300gig 7200rpm 16mb cache RAID-0+1 Gigabyte Nforce 4 SLI