A new December edition of the Steam Hardware & Software Survey is now available, adding Macintosh data to this look at the systems owned by Steam users. Some PC tidbits include how Windows 7 64-bit is now up to 35%, over 60% of users are now at DirectX 10 or DirectX 11, and 4GB of RAM is up to 27%. The graphics card breakdown is now 59% NVIDIA and 33% AMD, and CPU distribution is 72% Intel versus 28% AMD.