A few weeks ago, Nvidia hit the so-called GPU "sweet spot" when it launched the comparatively affordable GeForce GTX 660 Ti graphics card (be sure to check out our three-way roundup), putting Kepler within reach of gamers on a mid-range budget. Now mainstream gamers are invited to take Kepler home with the introduction of Nvidia's brand new GeForce GTX 660 and 650 graphics cards.
Starting at the top, the GTX 660 part (two of which we've already reviewed) is based on Nvidia's GK106 architecture and sports 960 CUDA cores, 80 texture units, 24 ROP units, 2GB of GDDR5 memory on a 192-bit bus, 980MHz base GPU clockspeed, 1098MHz boost GPU clockspeed, and 1502MHz (6008MHz effective) memory clockspeed.
Nvidia's GTX 650 is based on GK107 and is a much milder card. It has 384 CUDA cores, 32 texture units, 16 ROP units, 1GB or 2GB of GDDR5 clocked at 1250MHz on a 128-bit bus, and a 900MHz core clockspeed.
Both cards support up to four displays with a maximum digital resolution of 2560x1600, and both have a Dual-Link DVI-I and DVI-D ports. The 660 adds a full-size HDMI port and DisplayPort, whereas the 650 features a mini-HDMI port (and no DisplayPort).
The GeForce GTX 660 and GeForce GTX 650 are available today for around $229 and $109, respectively.