All the links to the Rosewill related products are broken. To be on the safe side, seriously consider getting 850W or more (800 is the bare minimum IMO). Furthermore, make sure you're getting a PSU from a reliable brand because this is one of the vital components that you can never spend too much money on.
How long are you willing to wait for the 7 series? They could potentially be delayed just like BullDozer was and there's no guarantee that they'll be releasing the 7900's so early off in the year. You also have to take into consideration that the HD 6950 is dramatically cheaper this time of the year to due to sales. If you're going to wait for the 7xxx series, make sure that the motherboard will be compatible and make sure that your cooling game is on-point. I'm also building a new rig (ordering parts later tomorrow), but I don't think I'm going to bother waiting for the 7 series. Instead I'll wait for Windows 8 and Dx12 along-with Nvidea's new line of cards.
As for your build, everything looks solid. However, I recommend that you get the 2GB Sapphire HD6950's because you can "unlock" the shaders so that they can function at HD 6970 levels. It is very easy to do and there's only like a %4 chance that something could go wrong. Even if your first attempt does fail, you can switch the BIOS and reset the thing.
alright thanks, ill fix the links and I will go with the 6950. I know my motherboard is compatible, but if its that cheap I might just swing by Frys or something and pick one up. Thanks.
If you're really worried about future-proofing, then you'll definitely want a better motherboard with PCI-Express 3.0 slots and LGA 1155 sockets so that they'll be Ivy Bridge compatible. From the looks of it, I think your mobo will be fine. I'm not really an expert on this, so please ask around.
Quite honestly, I'd hate to play the waiting game this year. There are just so many awesome releases this year...it's like 2007 all over again! And then think about it this way; if Windows 8 ships with DirectX 12, you'll still be one step behind so that waiting would have pretty much gone to waste because ATI and Nvidea would have to release a new line of cards.
why would dx12 come out?? dx11 still has potential. alright thanks, btw do you know any good 850w psus?
I actually take that back, you're fine with the 700W PSU unless you want to Crossfire now or in the near future. If you want to Crossfire, then get this. You'll probably be able get away with 750W, but seeing as how that is only marginally better than what you currently have, then you'd probably want to upgrade to at least 800W for future-proofing and safety net purposes.
I'm probably over-estimating, its just that a few years ago I had a very bad experience with a cheap PSU that supposedly "met" the requirements of my SLI'd 8800GTX's .
Yeah, I also take back the Dx12 comment. That's definitely really far off.
alright thanks haha. Even if I buy two sapphires and flash them, an 800 is all i would need?
Yup, I seriously recommend 800W, which is why recommend this one. If you're tight on a budget, then this 750W PSU is the absolute minimum. It's a very good PSU from a very reliable manufacture and it's also on-sale. However, it is only 50W higher than the PSU you already have.
You're really going to have to make your own choice. I've been reading around and some people are saying that their crossfire'd 6950s are drawing around 710, and then others are saying 650. Unlocked, the consensus on power draw with a 2500k seems to be an absolute minimum of 750W.
But seriously, don't forget: a PSU is one of the things that you absolutely don't cheap out on.
In regards to the Gold, Silver and Bronze certification, it is really up to you if you want to spend extra. The certifications are all related to incremental increases in economy and efficiency. All the ones I recommended to you are 80plus certified- the Gold/Silver/Bronze are just prefixes for the 80plus certification to indicate just how much more efficient they are.