I don't even have USB3 yet.
Ah, stuck back in the Stoneage, I see... how ancient of you. I've had USB3 for a while now and it is super quick compared to 2. You know, you can get a PCI-E card with 2 or 4 USB3 ports for just a few bucks, so it's an inexpensive way to enjoy the higher transfer speeds until your next major upgrade.
The i7 920 is what needs improvement.... so it'll be a new box...new MoBo .... likely new 'everything'..... whatever's up-to-date then
Yes, I have a couple of AMDs that are faster than the i7 920, so it would be the place to start.. and of course, a new mobo with SATA3 and USB3, DDR3 RAM... all the good stuff. Who knows DDR4 might be out by the time you're ready to build... and something from Intel to top the Haswells. I've got a i7 4770K on a Gigabyte GA-Z87X-UD5H with 10 SATA3 ports and 10 USB3 ports, so it'll rock the casbah with speed to burn.
I really wanted the Gigabyte GA-Z87X UD7-TH because it had some interesting SSD/HDD related features and 2 on-board Thunderbolt ports, but the company I ordered it from messed me around, saying it was discontinued and no longer in stock. 'Twas bullshit, though, given it is the latest model from Gigabyte Discontinued my arse, they just didn't want to sell it to me at the advertised price, which was significantly lower than any of their competitors.
Thing is, they're still advertising it for $320.00 and taking orders at that price... they just email prospective customers later with a 'not available' apology and offer an alternative... which I rejected because they had nothing comparable at a reasonable price. I got the last laugh, though. I lodged a written complaint regarding deceptive trade practices with the ACCC and Consumer Affairs.
Anyhow, I have all I need to get started with the build now. The Thermaltake Level 10 case arrived about 10 mins ago, so I might have a snooze for a couple of hours before getting stuck into it... gotta cannibalise some parts out of this rig to complete it so will be off line this evening, me thinks.