GIGABYTE has given two of their GeForce GTX 960 graphics cards an upgrade to 4GB of memory, the WindForce 2X and the G1.Gaming. The two GIGABYTE cards feature better cooling solutions and are factory overclocked.
The WindForce 2X (N960WF2OC-4GD) features a the twin fan WindForce 2X cooling solution and comes with a factory-overclock of 1241 MHz core and a 1304 MHz GPU Boost speed. The G1.Gaming (N960G1 GAMING-4GD) comes with the bigger WindForce 3X cooler that has three fans and a bigger heatsink. It comes with a core speed of 1266 MHz and the same 1304 MHz GPU Boost speed. Both of these cards now feature 4 GB of GDDR5 memory on their 128-bit wide memory bus running at 7 GHz.
Thanks to TechPowerUp for providing us with this information