You can. Brutuz is pretending it affects gaming more than it does.
And brutuz, what about priority levels? Doesn't just work with CPUs. HDDs prioritize. And FOR THE FLIPPIN RECORD, the HDD rarely effects FPS. The FPS is likely only affected for a small amount of time when textures are loading, unless you are trying to scan with a high priority as you play. Besides, how exactly are you benchmarking?