Nvidia's anticipated GeForce GTX 660, based on a stripped GK104 core, has promised to bring high-end performance to a lower price point for quite some time now. A launch in either July or August was already rumoured, and sources now claim that the card will see light of day later this month.
The mainstream graphics card has two disabled SMX units, which consist of 192 CUDA cores each, meaning 1151 such cores remain active on the card. Nvidia hasn't officially revealed any of the other specifications. it's expected that the card will feature 2 GB of GDDR5 memory and either a 192-bit or 256-bit memory interface.
Apart from the GeForce GTX 660, Nvidia will also introduce the GTX 650, which is to serve a lower market segment. No details are available as to whether Nvidia will also launch a GTX 660 Ti.

The GK104 chip will have two disabled SMX units in the GeForce GTX 660 card