The NVIDIA GeForce GTX 980 Ti uses the ‘big’ GM200 ‘Maxwell’ GPU like the GeForce GTX TitanX, but it has two Streaming Multiprocessor units disabled. As a refresher the NVIDIA GeForce GTX Titan X has 24 Streaming Multiprocessor units. Each SM contains 128 CUDA cores and that is how you end up with a total of 3072 CUDA cores that handle the pixel, vertex and geometry shading workloads. The texture filtering is done by 192 texture units and you have 3MB of L2 cache and 96 ROPs. The 3072 CUDA cores in the Titan X’s GM200 GPU are clocked at 1000MHz/1075MHz. Lastly, you have 12GB of GDDR5 memory on a 384-bit memory interface running at 7010MHz (7GHz) effect memory clock.
The NVIDIA GeForce GTX 980 Ti on the other hand had has just 2816 CUDA cores since two SM units have been disabled. This also means there is a reduction in the texture units, so you’ll find just 176 on the GTX 980 Ti. The clock speeds are set to the same as on the GeForce GTX Titan X, so the card is clocked at 1000MHz for the base clock and 1075MHz on the boost clock although we have been told that the boost clocks are more aggressively set on this card. The memory on the card has been cut in half, but the 6GB of GDDR5 memory still runs on a 384-bit memory bus and is clocked at 7010MHz. The GeForce GTX 980 Ti still has 96 ROPs and 3MB of L2 cache.
Preços em U$
Nvidia GeForce GTX TITAN X 12GB - U$ 999
Nvidia GeForce GTX 980 Ti 6GB - U$ 649
Nvidia GeForce GTX 980 4GB - U$ 499