Serial Presence Detect; I believe it's a way of id'ing memory to controller. >Any idea what the SPD designation stands for? Ian Carmichael From NY The NOSPIN Group provides a monthly newsletter with great tips, information and ideas: NOSPIN-L, The NOSPIN Magazine Visit our web site to signup: http://nospin.com Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://nospin.com/pc/pcbuild.html