At stock speeds at the same pricepoint it's ~33% faster for photo editing.
How so? My i7-870 system got a quicker result than what AT had for a SB chip. Sorry but saying 33% faster when that "faster" ends up meaning a second or two is misleading.
At the very least you have Ivy Bridge.
That's just a die shrink. I don't upgrade that fast. It's not worth it to spend $1500 on a new setup to save 2 seconds. By the time I would upgrade I doubt there will be any way I could keep the motherboard.
Or you could consider the money saved with using SB's integrated GPU on an H67 board. A Sata card is ~25$ for a fourport PCIe card on Newegg, which would still leave you in the green before even considering any of the speed advantages.
Please find me a 4-port PCIe SATA RAID card from a reliable manufacturer for $25. Post the link.
If you are so keen on performance, why settle for an integrated GPU? Will an integrated GPU run dual 30" monitors at 2560x1600? Will the performance in CS5 on the IGP match that of a discreet card? I haven't seen any benchmarks test this, but considering that I saw a performance increase by moving from an 8600GTS to a 460GTX, I'm not so sure it would.
So spend 25$ on a Sata controller card for your data drives, and run your boot/SSD off of the Sata3 ports. Frankly I'm much more scared of a hard drive dying and eating all of my RAW archive than a Sata port burning out. At least the sata port will give you pretty definitive performance loss for a few months before it goes.
Backing up data doesn't do any good if it gets corrupted in the process. I haven't seen detailed information on the flaw posted that would indicate there is no way corruption could occur.