Legit Reviews have been very busy testing 9 games in Windows Vista 64bit with 2GB RAM and 4GB to see what difference the extra RAM makes to framerates. Is it worth the extra cash? 

“Inspired by the Corsair Performance Analysis of 4GB versus 2GB of memory we figured it would be fun to see for ourselves how gaming performance is impacted by adding more system memory. We got our hands on a 2GB and a 4GB set of Corsair DOMINATOR PC2-9136C5 memory modules and set off to see what happens to the average frame rate in nine games at 1920x1200. 

Our average frame rate increase of 1.6% in nine games was slightly higher than the 1.1% shown by Corsair in the three games they tested, but our test system was a little newer and we were running Vista SP1. Something else that we noted while running the benchmarks is that game loading times were also significantly enhanced by installing 4GB of system memory. While load times was not the focus of this article we noted that Crysis v1.21 loaded 54.1% faster (14.28s versus 22.00s) on the initial level load. After the level was loaded and then restarted (as if one died and started over) the load times were within a hundredth of a second..."