I'm normally busy in the graphics forums, but a thought came to mind and I didn't know the answer.
Here's the scenario:
My current build (it's in my member's config) has a 100gb Vertex SSD. It's great, I like it a lot, etc. If I were to purchase another SSD, let's say of the same size, but of a different performance level (newer generation), would I still be able to have a RAID setup? Would I lose a lot of performance because one drive is slower than the other? Would it be worth it to even do this, or just buy two new SSD's at once?
I could be wrong, But in Raid0 the size is limited to the smaller one - but performance of iindividual drives are retained.
So thoughts on SSD Raid0
(1) You lose win 7 trim and must rely solely on CG.
(2) Raid0 will boost Seq read/writes
(3) Raid0 will NOT improve access time
(4) Raid0 does little to improve the small file random read/writes.
Myself I'd consider getting the NEW SSD as a Boot SSD, and converting your OLD SSD to a scratch disk and load the files that you want to work with.