With action oriented games where you need high frame rates, saving and loading will undoubtedly cause stutter or at least a significant frame rate drop. So, what can we do about it? There are a few steps you can take (in addition to having more memory) - get a faster hard drive or use a RAID 0 (stripe) array. The fastest hard disk for desktop users right now is undoubtedly Western Digital's Raptors. These 10K rpm hard disks have the fastest access time, but they also came with quite a hefty price tag and smaller capacities than most 7200 rpm drives. On the other hand, most chipsets and motherboards now come with SATA controllers supporting RAID 0 and 1. Since we don't have any of WD's Raptors right now, we're going for the latter option - two small capacities 7200 rpm SATA hard disks in one RAID 0 array.
Source: driverheaven
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