NVIDIA has officially announced the 3GB version of the GTX 1060 graphics card, and it indeed contains fewer CUDA cores than the 6GB version.
The GTX 1060 Founders Edition
The product page on NVIDIA.com now reflects the 3GB model, and board partners have begun announcing their versions. The MSRP on this 3GB version is set at $199, and availablity of partner cards is expected in the next couple of weeks. The two versions will be designated only by their memory size, and no other capacities of either card are forthcoming.
|GeForce GTX 1060 3GB
|GeForce GTX 1060 6GB
As you can see from the above table, the only specification that has changed is the CUDA core count, with base/boost clocks, memory speed and interface, and TDP identical. As to performance, NVIDIA says the 6GB version holds a 5% performance advantage over this lower-cost version, which at $199 is 20% less expensive than the previous GTX 1060 6GB.