Depends what you have under the hood right now, as for me I'm presently running an eVGA GeForce GTX 280 - Suppose I could keep it for Physic's-X Daughter Card or Cuda, which I don't use and I'm a Video Encoder thinking about doing some GAMING.
Of course I will install Games to the SSD or perhaps my Favorite Game to RamDisk.
If you presently have a 28nm Die Card now, I suggest you wait for 20nm die GPU's come mid summer, but I believe you will have more of a Performance/Heat Issue with the Smaller Die, comparable to what Intel had with the SB Vs IB CPU's and pricing will no doubt be higher.
PS: That old eVGA GeForce GTX 280 plays 4100x2300 Res 35 Mbps 4k Flics beautifully as if you're looking out of a clean window. It's amazing, on a $300 Korean QNIX 2560x1440 Res Samsung PLS Display at 120Hz or even 60Hz for that matter.
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i7 2700k/ASUS P8Z68-V Pro Gen3/Corsair H110 AIO (running @ .996v/1600Mhz to 1.376v/4600Mhz 24/7 between 36 to 67C), 4 x's 4GB sticks of Samsung MV-3V4G3D-US DDR3 running at 1.34v/1866Mhz 9-9-9-24 1T with 4GB's assigned to a RAMDisk drive to handle Win7 sluff and negate writes to the SSD, Samsung 840 Pro 256 SSD, 2 x's WD5001AALS HDD's in Raid-0, 1 x's WD1002FAEX 1TB, ASUS DRW-24B1ST DVDRW, Hauppauge WinTV HVR-1250 PCIe, XFX 850W Pro Black Black Edition modular PSU, eVGA e-GeForce GTX 280, Fractal Design ARC Midi R2 case, QX2510 Samsung PLS 2560x1440 res display at 120Hz.
POST 327 - Magic # for me - Loved the Old Chevy 327 - LOL
Another PS: While Posting this Thread I encoded a 704Mb 608Kps 854X358 23.976 AVC Web FLV Flic to a 857Mb 770Kps 856x358 23.976fps XviD 2 Pass Advance Simple @5 BVOP2/128 Kbps, 44.1 Khz, Joint Stereo mPeg4/mp3.avi for uploading to StageVu in the Back Ground.