When Windows Vista was released, we were suddenly forced to rethink our standards for minimum memory in a system. With the current versions of Windows XP, 512MB or RAM could get you by, 1GB was considered the minimum, and 2GB was the power-user option. Vista caused an over-night doubling of those numbers. Thanks to the release of ever-more punishing games, and the drop of RAM prices, 4GB is much more attainable and far more useful. The Corsair Dominator 4GB PC2-8500 RAM Kit is just such a product, providing 4GB of dual-channel DDR2 memory for just under $150.