Tania Majumdar I don't consider Linux 64-bit drivers as bad, but there are certain drawbacks due to being proprietary releases or say lack of co-operation between AMD and Linux Kernel community. Yes, you are correct for Gaming usage. I understand that many still use 32-bit machines unlike in the developed world. So which Linux distro could closely match (more or less) XP? Note: I used a couple of them several years ago. PCLinuxOS was one of the solid desktop distros. Probably the closest match in terms of UI , but I don't know how it fares now. Same goes with Mint too. Kubuntu was my favorite in the Ubuntu family. And there is Sabayon (was fond of), which was a great distro in those years. Lastly, I love OpenSUSE but don't use it anymore for R&D or production machines.
Tania Majumdar I'd also like to add that 'Puppy' should be awesome for all those non-gaming XP folks who are low on hardware resources like RAM. It works like a charm for typical users who mostly work with the web and mail. Did you use it?
***** I used puppy Linux just to check it but never as a main desktop. I use Ubuntu or Mint or other Debian based OS as main desktop. I used Fedora and OpenSUSE for experimental reasons.