Download Squad
"Speccy is a handy, portable system information tool from the makers of CCleaner. (...) Speccy is a more recent addition to the family, and it's a handy little tool for gathering information about the hardware in a Windows PC."

Read the full review at:
http://downloadsquad.switched.com/2010/01/08/speccy-is-a-handy-portable-system-information-tool-from-ccleaner/