Thanks so much TX-Rahman,I tried to contact the manufacturer Soyo through their web page inquiry form but have not got any response.I really wanted to buy 3 sticks of 512MB PC2700 but there is a note in the memory details for the motherboard NOTE:1. Only 2 banks of PC2700, and PC3200 is supported, this means you can only place two(2) DDR333(PC2700), or DDR400(PC3200) modules on this board. this board does, however; support three(3) DDDR266(PC2100) memory modules2. if two modules(PC3200, or PC2700) are being used on this board. Make sure to place one module on DDR socket #2, and one on DDR socket #3.3. If only one(1) memory module is being used on the board, you can place the module on either one of the memory sockets. So I was not sure if I can use 3 sticks of PC2700 on the motherboard, it says it supports 3GB memory, but not what speed.Can you make out from the note what memory combination is supported.Thanks a lot,

Hi,

Can I use 2 sticks of 512MB PC@PC2700 and 1 stick of 512MB PC2100 on this SY-P4X400 mobo.
I need to have 1.5 gig of memory.

Would appreciate if anybody give any info on this.

Thanks.