Nvidia GTX 580 with 1.5Gb VRAM (I hope not) or Nvidia GTX 580 with 3Gb VRAM (I hope yes)
Make sure you get the second.
Operating system? I presume Win7 64bit (just checking...)
8Gb RAM is perfectly all right. IF POSSIBLE and cost difference minimal, I would prefer 12Gb because you can create very easily RAMDISKS of 5-6Gb and thus have most of your game(s) loaded on RAM when you play (For me it is easier to have a 2Tb normal hard disk + RAMDISKs than a 300Gb SSD disk + trying to find where to put the rest of my files).
~S~
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