14 DAY TRIAL // Nvidia’s GTX 650 video cards are using the same well known Kepler GPU architecture, but unlike the GTX 660, GTX 670, GTX 680 and GTX 690 that use the a fully-fledged GK104 GPU, the GTX uses a smaller GPU called GK107.
Our readers should already know about the GK107, as this is the same GPU used on the GTS 640 low-range video cards.
The GK107 has the same Kepler architecture, just like we said, but it features only 384 CUDA cores running at a frequency around 1GHz.
This is a rather slow GPU, but the good news is that Nvidia is pairing it with new GDDR5 video memory that runs at a high 5 GHz, much faster than the DDR3 memory used on the GTS 640.
Guys at vga.it68.com have managed to get a picture of the reference design and it shows that this is a small video card with a modest cooling system, but is still requires and extra power line to be connected to its 6-pin connector in the upper right corner.