Windows 8 64-bit grew its userbase by 1.10% amongst gamers in July 2013 but only 0.67% in August 2013. Windows 7 32-bit was losing it's userbase since the launch of Windows 8, got some new users last month. It's userbase grew by 0.18% in August 2013.
Data collected from Steam Hardware & Software Survey indicate that Windows 64-bit is still the second most popular OS amongst gamers with 14.01% market share, while 32-bit version of Windows 8 is only installed on 0.80% of the gaming computers worldwide. Windows 7 64-bit remains the leader with 51.95%.