+1 for a GTX 770.
Info. Some reviews are for cards with 2GB of memory, with 4GB will give 2/4 more FPS but better performance for large or multi monitor displays.
In most Pro review I have read, the GTX 770 is slightly better thanthan the R280X and has much lower power requirements.
The RAM purchased is 2 separate stick, not a 2 x 4GB kit. FYI. Only RAM kits are guaranteed to be compatible and work together, single sticks are not. This is not usually a problem but, You should run Mentest86+ after the build to make sure there are not problems.
The R9 280x is 384-bit and so will be able to provide excellent in depth video quality but the card depending on the brand is slower than the GTX 770 and you need to be mindful that some brands of the R9 as stated by Sapphire for example require a 750W PSU, this obviously rules out the 620W Seasonic PSU as being suitable, just shades it for me due to the lower power requirement + the 4GB of VRam evens things out a bit with R9s 384-bit as opposed to the GTX 770s 256-bit, EVGA GTX 770
I have locked in on an MSI 770 with 2 GB mem, as the 4 gig one was too expensive, and I would not be adding another display anytime soon. Thanks to you awesome guys! Thanks for responding to my noobish questions, and helping me out. Couldn't have done it without you guys. I'll be more active on this forum, all thanks to people like you. Thank you, again!