Yes. The 660ti itself is 580 performance.
Do not really know much about GPU's, but the ones I am looking at are in the 6XX family. Of these 6 which would you recommend then? Some are like the same numbers, but everything else, well thats where it loses me, with clock speed, super clocked, etc.
1) Gigabyte (GV-N670OC-2GD) NVIDIA GeForce GTX 670 2GB GDDR5
- 1058 MHz Clock, 6008 MHz Memory
- PCI Express 3.0, DVI-I, DVI-D, DisplayPort, HDMI
2) EVGA (02G-P4-3662-KR) NVIDIA GeForce GTX 660 Ti 2GB GDDR5
- 1059 MHz Clock, 6008 MHz Memory
- PCI Express 3.0, Display Port, DVI, HDMI
3) EVGA (03G-P4-3663-KR) NVIDIA GeForce GTX 660 Ti 3GB GDDR5
- 1059 MHz Clock, 6008 MHz Memory
- PCI Express 3.0, Display Port, DVI, HDMI
4) EVGA (02G-P4-2670-KR) NVIDIA GeForce GTX 670 2GB GDDR5
- 980 MHz Clock, 6008 MHz Memory
- PCI Express 3.0, Display Port, DVI-I, DVI-D, HDMI
5) EVGA (02G-P4-2662-KR) NVIDIA GeForce GTX 660 Superclocked 2GB GDDR5
- 1046 MHz Clock, 6008 MHz Memory
- PCI Express 3.0 x16, DVI-I, DVI-D, Display Port, HDMI
6) EVGA (02G-P4-3660-KR) NVIDIA GeForce GTX 660 Ti 2GB GDDR5
- 980 MHz Clock, 6008 MHz Memory
- PCI Express 3.0, DVI-I, DVI-D, DisplayPort, HDMI
or possibly this, if it would be a HUGE jump from the 560
EVGA (02G-P4-2680-KR) NVIDIA GeForce GTX 680 2GB GDDR5
- 1058 MHz Clock, 6008 MHz Memory
- PCI Express 3.0, Display Port, DVI, HDMI