Hi guys, I was given this build by djangoringo, using two GeForce 670's in SLI. However, after looking around and seeing that AMD GPU's are cheaper and I can get better performance for my money, I think I want to build my computer with AMD chips. From the options that I've seen, I can either Crossfire 2 6970's or get one 6990. Which one do you think is better and how would I have to changes this build?
Please keep it within $300 of the price of the original build.
If your goal is simply gaming performance, overclocking the i5-3570k to 4.5ghz or more and putting the $$$ into graphics cards is going to give you far better gaming performance than build #2.
Build #2 isn't just i7 vs i5, Build 1 is LGA1155/Ivy Bridge while Build 2 is LGA2011/Sandy Bridge-E(xtreme). LGA2011 supports more powerful CPUs than LGA1155 but is way more expensive, and more importantly provides no better framerates than an i5-3570k. Now if you need lots of CPU muscle for certain workstation tasks then LGA2011 makes sense, but for a gaming PC you are usually overspending if you buy it.
And yes, you can just swap out two 670s for two identical 7970 (or 7970 ghz edition, etc) with no other changes. You could also get a 7990 if you want, which is just an unofficial crossfire of the 7970 on a single board. (6XXX series are older cards that you don't want).
But what's the diff between the i5 and the i7, they're both quad-cores?
Both i5 and i7 are quad cores CPU... i7 have the Hyper-Threading and Quick Sync ability which is ideal for video rendering/encoding tasks... if your goal is to play games only, an core i5 CPU is the best choice for you...
The Ghz Edition is the best choice
There are as well HD7970 flat and they are great too.
Speaking brands, then I'd had to suggest Sapphire, they are my absolute favorite with AMD, if not that, then XFX.
Also, I agree with jacobsta, socket 2011 for gaming is way too overkill and for around 2 to 5 more FPS, definitely not worth it at all.
If you want gaming, your best best is either a 3570k (LGA1155) or a 8350 (AM3+)
I like G-skill Ares 2x8gb if you are going that way. But it doesn't really matter too much as long as you get RAM without giant heatsinks (nh-d14 is a big cooler, definitely overlaps at least the first RAM slot).