Hi! I'm thinking of building an AMD 64 system and I don't really understand the "dual channel ram"´-thing. The componentents I'm thinking are: MOBO: MSI K8N Neo2 Platinum ( http://www.msi.com.tw/program/products/mainboard/mbd/pro_mbd_detail.php?UID=607 ) CPU: AMD Athlon 64 3000+ 1,8Ghz 512KB Box Socket 939 (90nm) MEMORY: TwinMOS PC3200 DDR-DIMM 1024MB Dual Pack Kit w/two matched PC3200 DDR DIMMs GRAPHICS: Sapphire Radeon 9600PRO Advantage 128MB AGP, ATI9600PRO, DVI-I, TV-Out, Full-Ret So my question is, will this memory work as dual-channel and also if I'd like to double it (so that I have 4x512mb), will it work with the MOBO. It seems that the bus-speed would then be reduced from 400mhz to 333mhz. Is this correct? (With my present MOBO, MSI 845PE Max2-fir I can't expand the memory though there are "physical" slots available due to something with single/double-sided memory) Thanks a lot Petri

Dual channel memory alternates between two sticks of RAM. This means that while one stick is transfering data, the other is preparing to send. Overall, this is nearly twice as fast as a non-dual setup. You have misread the information on the motherboard. That board will reduce speed to 333Mhz when double sided modules are fitted.