4850's in Tri should be faster then a 6950 but your X6 is holding back any multi card setup.
4850's in Xfire = 5850
For a gaming rig, ssd's should only become an option after you've got everything else covered (really good video setup - as in at least a hd 6970-, a solid cpu - a i5 2500k or older i7- and an optimal amount of ram - at least 6 gb)
OP's rig is not bad, but he'd benefit a lot more from the above upgrades before it makes sense to get a ssd.
For a gaming rig, ssd's should only become an option after you've got everything else covered (really good video setup - as in at least a hd 6970-, a solid cpu - a i5 2500k or older i7- and an optimal amount of ram - at least 6 gb)
OP's rig is not bad, but he'd benefit a lot more from the above upgrades before it makes sense to get a ssd.
I'm still stuck in the good ol' days with RAID0 xD
But i've seen a lot of PCs with SSD. Honestly, since i don't need my PC booting up in 10 seconds, i'm happy with RAID.
179MB/s ftw!
May i suggest this 580 from personal experience
http://www.newegg.com/Product/Produc...-429-_-Product
if i dont use all 4gb of ram, how would 6gb help? a 6970 is worth getting an SSD for but not a 6950?
No offence, but im 90% sure i will notice a much better boost from an SSD than the upgrades you suggested.... nothing like a sidegrade to get things moving. ( i can agree the SB's being better procs.... but im not going through all the MB bull for a small bump in performance and the "older" i7's are no where near good enough to constitute a platform change) - not only that, a good SSD should outlast the other parts.... atleast most of my HD's have, so its something you can move to your next system.
back OT the Corsair and Crucial are both tempting, but im leaning towards the Corsair for the write speeds. Might have to up the budget a little
I have the GA-890FXA-UD5 with sata 6gb/s - this should be fine for an SSD yes?

 
				
		