Please excuse my lameness but HELP with DDR!

[Gillbot]

I haven't kept up with the pace of technology and I'm still using PC133 SDRAM. I wanna switch over to an XPC for silent/small operation. Apparently I need PC2100 DDR but PC2700DDR is about the same price. Is this stuff just like PC100/133 when it came out and the "speed rating" isn't important as long as it will run as fast as my FSB? Do they need to be installed in pairs?

 

[Viper96720]

You can use PC-2700 backwards compatible. Only need pairs if using a dual channel chipset like intel's 865PE or Nvidia nforce. Although with the nforce chipset not that much difference. You can still run dual channel chipsets like those single channel.

 

[Gillbot]

so basically get whatever is cheapest and will run at the minimum PC2100 and singles are ok?

This will be going into a SK41G system.