To begin with, we took the following system and ran the CPU and GPU benchmarks in 32 bit and 64 bit mode: Windows Vista Ultimate x64, Intel Core 2 Quad Q6600 @ 3GHz , 4GB system RAM, NVIDIA GeForce 8800 GTX 768MB, ForceWare 163.69 drivers. We took two extremes to see what the results would churn up: 800 x 600, running in DX9 with all detail settings at Low, and 1680 x 1050, running DX10 with all detail settings on Very High. Each benchmark batch file was run 5 times, with all of the collated results averaged. The results are in the image to the right. Before we all jump to any conclusions though, bare in mind that this is a demo and not the final retail game - we could genuinely see noticeable gains by using the 64 bit version but if we assume that the demo is a pretty close code version to the launch one, then not all of us are going to be so lucky. Please let us know what you find out: try running the CPU and GPU benchmarks across a range of settings in 32 and 64 bit, and then post your findings!