dont worry about crystal disk too much.
 
Make sure you have Enabled write Cache . 2x in raid 0 would give you like 58- 59 usable in raid 0. Windows 7 would take a huge chunck of that out by default. YOu may want to Disable system restore and take out all the memory it is saving.  The fuller the drives the slower they are. meaning if you have used 10 gigs free or 7 gigs free that is the reason why your comp is slow. You could pick up another 2  and make it 120 gb raid and max out that controller and enjoy it =).  IF i had 2 i would try to have more than 10-15 gigs free at all times :P. But that's just me
 
Here is a quick couple things to do ;P
 
http://www.ocztechnologyf...Tweaks-amp-Utilities-*

Only do the ones that would seem good to you. IE indexing, superfetch, write cache, system restore, hibernate, Defrag and a few others.
 
 
DO not defrag these drives if you did not know . Disable it, turn it off, uninstall it ! anything! lol. The little link i gave you will tell you how to disable it permanently.
 
Now before you do that all ... If you have windows 7 do this
 
Open up Command Promt As administrator ( right click it open as admin)
 
Type this in when Command prompt pops up and itll ive you your numbers
 
 
Winsat Disk
 
 
Here are 3 runs i did around christmas time
 
> Disk Sequential 64.0 Read 1933.80 MB/s 7.9
> Disk Random 16.0 Read 207.80 MB/s 7.8
> Responsiveness: Average IO Rate 0.29 ms/IO 7.9
> Responsiveness: Grouped IOs 5.50 units 7.9
> Responsiveness: Long IOs 1.57 units 7.9
> Responsiveness: Overall 8.62 units 7.9
> Responsiveness: PenaltyFactor 0.0
> Disk Sequential 64.0 Write 1244.74 MB/s 7.9
> Average Read Time with Sequential Writes 0.284 ms 7.9
> Latency: 95th Percentile 0.683 ms 7.9
> Latency: Maximum 38.740 ms 7.9
> Average Read Time with Random Writes 0.446 ms 7.9
> Total Run Time 00:00:56.94

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXX
> Disk Sequential 64.0 Read 1900.12 MB/s 7.9
> Disk Random 16.0 Read 195.67 MB/s 7.7
> Responsiveness: Average IO Rate 0.27 ms/IO 7.9
> Responsiveness: Grouped IOs 5.30 units 7.9
> Responsiveness: Long IOs 1.50 units 7.9
> Responsiveness: Overall 7.96 units 7.9
> Responsiveness: PenaltyFactor 0.0
> Disk Sequential 64.0 Write 1237.64 MB/s 7.9
> Average Read Time with Sequential Writes 0.282 ms 7.9
> Latency: 95th Percentile 0.672 ms 7.9
> Latency: Maximum 46.713 ms 7.9
> Average Read Time with Random Writes 0.496 ms 7.9
> Total Run Time 00:00:56.82



> Disk Sequential 64.0 Read 2496.89 MB/s 7.9
> Disk Random 16.0 Read 212.08 MB/s 7.8
> Responsiveness: Average IO Rate 0.36 ms/IO 7.9
> Responsiveness: Grouped IOs 6.10 units 7.8
> Responsiveness: Long IOs 2.50 units 7.9
> Responsiveness: Overall 15.22 units 7.9
> Responsiveness: PenaltyFactor 0.0
> Disk Sequential 64.0 Write 1226.32 MB/s 7.9
> Average Read Time with Sequential Writes 0.287 ms 7.9
> Latency: 95th Percentile 0.699 ms 7.9
> Latency: Maximum 38.129 ms 7.9
> Average Read Time with Random Writes 0.430 ms 7.9
> Total Run Time 00:00:57.05