Currently building this MODERATE GAMING RIG basically to upgrade from my old computer which is close to dead soon.
Was totally confused by the RAMS at first, and could still use some advice. Go for the Ripjaws X series? Go for 8GB? Go for DDR1333 or 1600 or 2000? Could really use some help here.
Going to overclock the CPU to roughly 4.5Ghz~4.8Ghz, around that range to get a 24/7 stable overclock.
GPU is already overclocked and may overclock RAM if it bottlenecks the whole system, not really sure how to check if the system is bottlenecked though.
Going to get Windows 7 64bit if this might help you decide on the RAM.
Also, from Australia so newegg.com would be totally out.
Are you just using the build to play games? Or is there another use? I'm asking because if it's just gaming, the HD 6950 is $80 cheaper, and offers better performance, once you've tweaked it. The 6950 has a "feature" that allows you to flash the card's BIOS with the HD 6970's BIOS. If you do this, the card will perform exactly like the 6970, which is more powerful than the 570. Of course, if you don't flash the BIOS, it's slighly weaker.
It all looks good. The RAM is just fine. For overclocking, you'd want 1600 mhz CAS Latency 7 sticks. If you weren't overclocking, 1600 mhz CL 9 would be fine. I wouldn't get 1333 mhz sitcks, as they're slower and won't save much. 2000 mhz sticks are a waste of money. 4 GB is enough if you don't do any rendering, encoding or video/photo editing.
I'd probably look at getting a different HSF. The Hyper is a good budget cooler, but it's outshined by similarly priced HSF, like the Scythe Mugen 2 Rev. B (SCMG-2100, around $40). You're certainly going to want something bigger than the Hyper if you want to get the CPU stable at speeds that high. I'd even go as far as to suggest the best air cooling you can get, the Noctua NH-D14 for around $90.
You could get by with a 750W PSU, if you wanted to save some money. Of course, since you opted for an 80+ Gold PSU, I doubt that's the goal.