Nvidia has quietly rebadged two more GPUs for OEMs, the GT 520 and the Geforce 510. According to the specification list, GT 520 becomes GT 620, while Gerforce 510 is renamed, rebranded or rebadged to Geforce 605.

The GT 620 specs are pretty much the same as those seen on the GT 520 GPU. The only difference that we can see so far is half the amount of memory, as GT 620 will be available with either 512 or 1024MB of DDR3 memory while GT 520 had up to 2048MB. It still has 48 CUDA cores and works at 810MHz for the GPU and 1620MHz for shaders while the memory ended up clocked at 898MHz and paired up with a 64-bit memory interface.

The difference between the Geforce 510 and the "new" Geforce 605 is a bit bigger as, although you are looking at the same GPU with 48 CUDA cores, the new Geforce 605 will have quite lower clocks. While Geforce 510 worked at 810/1620MHz for the GPU and shaders, the Geforce 605 will work at 523/1026MHz. This one will also be available with either 512MB or 1GB of DDR3 memory (Geforce 510 had up to 2GB) paired up with a 64-bit memory interface and clocked at 898MHz.

The good part of the story is that these are still OEM only GPUs and you won't see them on retail/e-tail shelves.

You can check out more here.