Okay in terms of overhead there's rarely any difference, all within the margin of error (Between 1023 and 1023.3)... Both by VBS, and both on the same OS (Windows 8.1 x64 all updates done). 1023: Overhead: http://www.3dmark.com/3dm/7051727? Fire Strike 1.1: http://www.3dmark.com/3dm/7051771? 1023.3 Overhead: http://www.3dmark.com/3dm/7055469? Fire Strike 1.1: http://www.3dmark.com/3dm/7055520?