Currently spec-ing a gaming system, for a first self-build. Nothing special, want to be able to run the likes of Battlefield 3, but doesn't have to be "ultra all-round".

Am interested in photography, and, whilst I'm only yet at the "dabbling" stage, with video work, I hope to get better, and may want to get decent video editing software, like Adobe Premier Pro, or Vegas Pro, when skill allows. So thought it made sense to check new system would be suitable. I was happy til then.

Fairly easy to settle on i7 Ivybridge and decent RAM, but chosing graphics is getting silly. HAD been thinking of two GTX560, or 560Ti's, in SLI, for gaming. I appreciate that something like a Quadro is best for video, but a bit outside my budget. Premier Pro suggest only other choice is Gtx570, or 580. Vegas Pro is a bit less picky, but still points in similar direction.

So, OK, a Gtx570. But then I think, if I want to run two monitors, eventually, will 1.25 GB of VRAM on the 570, be enough. Then I find a 2.5GB version from EVGA, but the only board they can suggest for it is eATX. Do I really want to re-think case etc. Then I think "what about a 580". Then I think..... this is getting silly, especially when I don't really know HOW SIGNIFICANT the graphics choice is. As I understand it, most processes are more dependant on CPU and RAM, rather than pure graphics.

Have looked at numerous reviews, and threads on video forums, which mostly say "best is better". I kinda knew that. What I could REALLY do with is someone to either say "I'm using a GTX570, and it's just about adequate" or say "I'm using something less, and it's only marginally slower".

I'm hoping to be able to produce 15/20 min training videos, for club/seminar use, to a reasonable standard. I'm not looking to do a remake of Star Wars. I would really appreciate some guidance on what is "sensible"