Lab Tests: Vista's Fast If You Have the Hardware
You need at least 1GB of RAM, and you'll go even faster with a dual-core processor, PC World's lab testing shows.
Our tests of Vista's 64-bit version indicate that while programs generally run slower on it than they do on the 32-bit version, adding more RAM can help wipe out the difference (see the "Apps Run Faster on 32-Bit Vista" test report). With 1GB installed RAM, the Polywell and Micro Express PCs ran our Photoshop test 12 percent and 25 percent slower, respectively, in 64-bit Vista. When we moved both systems up to 2GB, the difference disappeared completely.
Browse around the site for more Vista news.