14 DAY TRIAL // We've known, for some time, that NVIDIA will release some new graphics cards on September 12, but what we did not know was that there might be two more units on the way.
As we said when the ETA came out (September 12, 2012), the GTX 660 will use the GK106 graphics processing unit, while the GTX 650 will rely on the GK107.
Now, though, we believe that a GeForce GTX 655 and a GTX 650 Ti may be approaching as well, possibly scheduled to make their debut at the same time as the others.
3DCenter.org reports that a leaked internal document has been released to the Internet, one that mentions two more SKUs (stock-keeping units) built with the GK106, or at least a version of it.
The weaker one, called GTX 650 Ti (even though the normal GTX 650 is powered by the GK107), has two of the five GK106 SMX units disabled. That leaves it with 576 CUDA cores (the name of the chip is GK106-200).
The document also provides the GDDR5 VRAM amount (2 GB of memory) and the memory interface (128 bits-wide). All in all, not much is different from the specs of the GK107-based GTX 650.
Thus, the purpose of the GTX 650 Ti can't be anything more than covering another price point on the mainstream market, whatever that point is.
The second card, GTX 655, is powered by the GK106-250, with one of the SMX units disabled, which means 768 CUDA cores. The 2 GB of GDDR5 memory get a wider memory interface as well (192 bits).
Unfortunately, the clock frequencies have not been discovered. The video outputs have, though: all cards will be equipped with an HDMI port, a DisplayPort and two stacked DVI ports (DVI-I DL/DVI-D).
We'll be here, hoping that these cards are at least mildly close to the performance of the GTX 660, which was found to be faster than both GTX 580 and AMD Radeon HD 7870.