He may not be able to reach max frequency on the RAM, but he'll certainly be able to run it at 1600 with significantly tighter timings. That deal on the G.SKILL Sniper is great, I'd stick with that. Also, the 'maximum memory voltage' is
1.5V, but there's really no harm in running 1.6V. It's not going to melt your CPU or anything. Edit:
Not to mention, he could undervolt it to 1.5V and likely still be able to run with tight timings at either 1333 or 1600.
Personally, my suggestion is to drop the SSD and spend that money towards getting the 3570k/2500k and a nice Z77 motherboard. Save up for a while, and then purchase a nice 256GB solid-state - prices will have likely fallen a little by then.
Please, please, please get a different PSU. XFX is a great brand, there's no doubt - but 450W is not going to leave you any headroom at all (especially if you get an unlocked CPU). The OCZ ModStream Pro listed above is a pretty good PSU, but I'm more partial to something like the Corsair TX650-V2
. It is more expensive and non-modular, but it's more efficient and of better build quality than the ModStream.
Just a thing to note about PSUs: don't pick one based on what you need to run the parts you buy the first time - get something that leaves you headroom to upgrade, and still not run at 100% capacity.
Because power supplies don't run at 100% capacity - that ModStream, for example, runs at 80% capacity. The Corsair at about 85%.