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GeForce GTX 980 Ti vs Nvidia Titan X


Intro

The GeForce GTX 980 Ti has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 384-bit bus, and makes use of a 28 nm design. It is made up of 2816 SPUs, 176 Texture Address Units, and 96 Raster Operation Units.

Compare those specs to the Nvidia Titan X, which has GPU clock speed of 1417 MHz, and 12288 MB of GDDR5X RAM running at 1251 MHz through a 384-bit bus. It also features 3584 Stream Processors, 224 TAUs, and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically, the Nvidia Titan X should be quite a bit faster than the GeForce GTX 980 Ti overall. (explain)

Nvidia Titan X 491520 MB/sec
GeForce GTX 980 Ti 336000 MB/sec
Difference: 155520 (46%)

Texel Rate

The Nvidia Titan X should be quite a bit (more or less 80%) better at texture filtering than the GeForce GTX 980 Ti. (explain)

Nvidia Titan X 317408 Mtexels/sec
GeForce GTX 980 Ti 176000 Mtexels/sec
Difference: 141408 (80%)

Pixel Rate

If running with a high resolution is important to you, then the Nvidia Titan X is the winner, and very much so. (explain)

Nvidia Titan X 136032 Mpixels/sec
GeForce GTX 980 Ti 96000 Mpixels/sec
Difference: 40032 (42%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

GeForce GTX 980 Ti

Nvidia Titan X

Specifications

Display Specifications

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Model GeForce GTX 980 Ti Nvidia Titan X
Manufacturer nVidia nVidia
Year June 2015 August 2016
Code Name GM200 GP102-400
Memory 6144 MB 12288 MB
Core Speed 1000 MHz 1417 MHz
Memory Speed 7000 MHz 10008 MHz
Power (Max TDP) 250 watts 250 watts
Bandwidth 336000 MB/sec 491520 MB/sec
Texel Rate 176000 Mtexels/sec 317408 Mtexels/sec
Pixel Rate 96000 Mpixels/sec 136032 Mpixels/sec
Unified Shaders 2816 3584
Texture Mapping Units 176 224
Render Output Units 96 96
Bus Type GDDR5 GDDR5X
Bus Width 384-bit 384-bit
Fab Process 28 nm 16 nm
Transistors 8000 million 12000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

GeForce GTX 980 Ti

Nvidia Titan X

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