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Nvidia Titan X vs Radeon R9 290X


Intro

The Nvidia Titan X features a GPU core speed of 1417 MHz, and the 12288 MB of GDDR5X RAM runs at 1251 MHz through a 384-bit bus. It also is comprised of 3584 SPUs, 224 Texture Address Units, and 96 Raster Operation Units.

Compare all that to the Radeon R9 290X, which uses a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this particular model. It features 2816 SPUs as well as 176 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Nvidia Titan X 250 Watts
Radeon R9 290X 300 Watts
Difference: 50 Watts (20%)

Memory Bandwidth

In theory, the Nvidia Titan X should be quite a bit faster than the Radeon R9 290X overall. (explain)

Nvidia Titan X 491520 MB/sec
Radeon R9 290X 320000 MB/sec
Difference: 171520 (54%)

Texel Rate

The Nvidia Titan X should be a lot (more or less 125%) better at AF than the Radeon R9 290X. (explain)

Nvidia Titan X 317408 Mtexels/sec
Radeon R9 290X 140800 Mtexels/sec
Difference: 176608 (125%)

Pixel Rate

If running with a high screen resolution is important to you, then the Nvidia Titan X is superior to the Radeon R9 290X, by far. (explain)

Nvidia Titan X 136032 Mpixels/sec
Radeon R9 290X 51200 Mpixels/sec
Difference: 84832 (166%)

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

Nvidia Titan X

Radeon R9 290X

Specifications

Display Specifications

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Model Nvidia Titan X Radeon R9 290X
Manufacturer nVidia AMD
Year August 2016 October 2013
Code Name GP102-400 Hawaii XT
Memory 12288 MB 4096 MB
Core Speed 1417 MHz 800 MHz
Memory Speed 10008 MHz 5000 MHz
Power (Max TDP) 250 watts 300 watts
Bandwidth 491520 MB/sec 320000 MB/sec
Texel Rate 317408 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 136032 Mpixels/sec 51200 Mpixels/sec
Unified Shaders 3584 2816
Texture Mapping Units 224 176
Render Output Units 96 64
Bus Type GDDR5X GDDR5
Bus Width 384-bit 512-bit
Fab Process 16 nm 28 nm
Transistors 12000 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Nvidia Titan X

Radeon R9 290X

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