Hi, I'm currently running a X58A-UD3R MOBO (1366) with a intel i7 960 @ 3.20 ghz with 12gb of (4x3) tri-channel ram and two kingston 30gb ssds in raid 0. For GPU, I'm running two stock GTS 450's in SLI. The computer is two years old and I'm looking to drop a new graphics card and am currently considering two EVGA cards: the gtx 660 2048mg GDDR5 superclocked vs the GTX 660Ti Superclocked+ 3072MB GDDR5. I'm looking to eek a couple more years out of what is primarily a gaming rig with some 3d graphics modeling on the side. My debate is mainly price-to-performance. Given the extra 1000 MB, 100 cuda cores, and 100Mhz base clock, will the performance difference between these two cards be perceptible enough to justify the extra $100, or is the little bit of extra kick just 'heated seats'?
http://www.amazon.com/EVGA-GeForce-SUPERCLOCKED-Graphics-03G-P4-3663-KR/dp/B008S15X64/ref=sr_1_8?ie=UTF8&qid=1351293569&sr=8-8&keywords=gtx+660
Base Clock: 980 MHz
Boost Clock: 1059 MHz
Memory Clock: 6008 MHz
CUDA Cores: 1344
PCI-Express 3.0
3072MB GDDR5 192bit
339.99
http://www.amazon.com/EVGA-GeForce-SUPERCLOCKED-Graphics-02G-P4-2662-KR/dp/B00966IREK/ref=sr_1_1?ie=UTF8&qid=1351293569&sr=8-1&keywords=gtx+660
Base Clock: 102046 MHz
Boost Clock: 1111
Memory Clock: 6008 MHz
CUDA Cores: 960
PCI-Express 3.0
2048MB GDDR5 1292-Bit
229.99
http://www.amazon.com/EVGA-GeForce-SUPERCLOCKED-Graphics-03G-P4-3663-KR/dp/B008S15X64/ref=sr_1_8?ie=UTF8&qid=1351293569&sr=8-8&keywords=gtx+660
Base Clock: 980 MHz
Boost Clock: 1059 MHz
Memory Clock: 6008 MHz
CUDA Cores: 1344
PCI-Express 3.0
3072MB GDDR5 192bit
339.99
http://www.amazon.com/EVGA-GeForce-SUPERCLOCKED-Graphics-02G-P4-2662-KR/dp/B00966IREK/ref=sr_1_1?ie=UTF8&qid=1351293569&sr=8-1&keywords=gtx+660
Base Clock: 102046 MHz
Boost Clock: 1111
Memory Clock: 6008 MHz
CUDA Cores: 960
PCI-Express 3.0
2048MB GDDR5 1292-Bit
229.99