It definately will work. I have a firmtek EN2st Macbook Pro card for a dual Sata raid array and I can run 2 concurrent layers of 99% photojpeg HD with very little frame loss.
I have the latest and loaded Macbook Pro 2.4ghs Intel 2 Dual Core with an Nvidea 8800 configured for 1920x1200 with 4gb of ram.
It completely blows away my old 2l5 ghz tower with a readeo 850 XT and 4gb of memory apart!
It makes for a great portable system and the only thing I lack is realtime video input.
I assume if I hooked up two of these ramdisks to my card, they would raick.
My 8 core would probably kick arse all over it though as I saw some pretty stunning AECS3 benchmarks at barefeats.com.
I would use it for both if I bought a dual raid. I'm sure it would be fast but I have 15gb in my new 8 core which is siting at my friends house waiting to be used. I'm sure the esperance ramDisk using 10gb of 8 core internal memory might be faster or just ask good with the exception of capacity. I'll run some speed tests when I finally pick it up and post them.
Christian