Re: geforce 280 gtx sli debating about 480 sli...
I would definitely put that OS onto the ssd. Also, if there is still affordability, I would sell off your 780i mb, cpu and ram and gtx 280's. Get a i7-950 (about the same price as a 930 now), 6gb of ddr-3 ram and a asus p6x58d-e (it's the cheapest of the newest) mb's. Then you will see the score fly on a overclock.
gigabyte g1.sniper 5 mb, 8gb ddr3-1866 mhz ram in dual channel,intel core i7 4790 3.6 ghz quad core cpu, asus gtx 780 3gb vc,OCZ vector 150 240 gb ssd x 2 in raid 0 (intel raid),antec hcg-850 850 watt 80 plus bronze psu,corsair carbide 500r white case,pioneer bdr-208 15x bluray writer, steelseries 6gv2 keyboard ,acer gv215hv 21.5 inch 1080p lcd monitor, zalman eclipse 8200dpi mouse,xbox 360 wired controller for windows,kingston 8gb usb 2.0 flash drive,windows 8.1 64 bit,creative labs sound blaster zxr pci-e sc,logitech s120 2.0 speakers
I'd rather walk with God in the Dark than shine in the light alone.