Stefan Mileschin

The GeForce 600 series grew by two members today (albeit, OEM-only), NVIDIA re-branded the GeForce GT 520 to a new model name, "GeForce GT 620". This "new" part is otherwise identical to its predecessor, except that its standard memory amount has been halved from 1 or 2 GB to 512 MB or 1 GB. A feature addition here, is that the GT 620 supports the OpenGL 4.2 API, something the GT 520 doesn't. The GT 620 continues to be based on the 40 nm GF119 silicon, with 48 CUDA cores, 8 TMUs, and 4 ROPs.

NVIDIA also unveiled to OEMs the "new" GeForce 605, which is a re-branded GeForce 510. Based on the same GF119 silicon as the GT 620, the GeForce 605 core runs at 523 MHz, with 1046 MHz CUDA cores. This model comes with memory size options of 512 MB and 1 GB. It also inherits the core configuration of the GeForce 510, with 48 CUDA cores, 8 TMUs, and 4 ROPs.

http://www.techpowerup.com/163662/NV...ries-SKUs.html