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GeForce GTX Titan X vs Nvidia Titan X


Intro

The GeForce GTX Titan X has a GPU core speed of 1000 MHz, and the 12288 MB of GDDR5 RAM runs at 1750 MHz through a 384-bit bus. It also is comprised of 3072 SPUs, 192 Texture Address Units, and 96 ROPs.

Compare all that 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 is comprised of 3584 SPUs, 224 Texture Address Units, and 96 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Nvidia Titan X should perform quite a bit faster than the GeForce GTX Titan X in general. (explain)

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

Texel Rate

The Nvidia Titan X is much (approximately 65%) better at AF than the GeForce GTX Titan X. (explain)

Nvidia Titan X 317408 Mtexels/sec
GeForce GTX Titan X 192000 Mtexels/sec
Difference: 125408 (65%)

Pixel Rate

If running with lots of anti-aliasing 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 Titan X 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 Titan X

Nvidia Titan X

Specifications

Display Specifications

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Model GeForce GTX Titan X Nvidia Titan X
Manufacturer nVidia nVidia
Year March 2015 August 2016
Code Name GM200 GP102-400
Memory 12288 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 192000 Mtexels/sec 317408 Mtexels/sec
Pixel Rate 96000 Mpixels/sec 136032 Mpixels/sec
Unified Shaders 3072 3584
Texture Mapping Units 192 224
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 max amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

GeForce GTX Titan X

Nvidia Titan X

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