Depends on your RAID Controller. Newer Raid Cards and Chipsets support it.
Unfortunately only some 2011/x79 mobos seem to support it (yet).
I think some Asus boards do it.
Anyway, I run a x79 mobo with 2x crucial m4 256gb in raid0 without trim and get about 640MB/s read / 200MB/s write, sustained.
Do not get the H100, at least not for overclocking! It's loud as a lawnmower when put to the test.
At least thats my expereience.
You can get even better cooling and less noise using a decent tower cooler like thermalright silver arrow.
My 3930K @ 4,4Ghz runs 40°C idle and max.60°C on load with aircooling, 24H most of the time.
I'm not a big fan of overclocking either, cause I need the realiability.
But thats simply what the sandy-e cpus are meant for. Setting things up has become a breeze.
It took a few days to find the limits of the build though.