Why would I go 3-3-3-8, wouldn't that slow it down? That's the impression I got.
I explained why.......if you're overclocking your RAM beyond PC3200 speeds, you can't leave it at the same timings muchless the fact that you said you've tightened your timings from 2.5-3-3-6 which is stock, down to 2-3-3-5....THEN I told you that the cas latency of 2 and cycle time of 5 aren't any improvement in performance.
Your RAM is currently being overclocked at tighter timings than stock, hence the crashes your getting.........if you're going to overclock your RAM, you need to loosen your timings to 3-3-3-8 and supply approx 2.8v
Either way, going from 2-3-3-5 to 3-3-3-8 would be absolutely NO difference in performance...technically yes, on the nano-scale it is slower, but you will never notice it in any kind of performance testing