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Nvidia Titan X vs Radeon R9 390 8G


Intro

The Nvidia Titan X makes use of a 16 nm design. nVidia has clocked the core speed at 1417 MHz. The GDDR5X memory works at a speed of 1251 MHz on this card. It features 3584 SPUs as well as 224 Texture Address Units and 96 Rasterization Operator Units.

Compare those specifications to the Radeon R9 390 8G, which has a core clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 512-bit bus, and uses a 28 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, 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 390 8G 275 Watts
Difference: 25 Watts (10%)

Memory Bandwidth

Performance-wise, the Nvidia Titan X should theoretically be a lot superior to the Radeon R9 390 8G overall. (explain)

Nvidia Titan X 491520 MB/sec
Radeon R9 390 8G 384000 MB/sec
Difference: 107520 (28%)

Texel Rate

The Nvidia Titan X will be much (approximately 98%) better at AF than the Radeon R9 390 8G. (explain)

Nvidia Titan X 317408 Mtexels/sec
Radeon R9 390 8G 160000 Mtexels/sec
Difference: 157408 (98%)

Pixel Rate

The Nvidia Titan X will be quite a bit (approximately 113%) faster with regards to FSAA than the Radeon R9 390 8G, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Nvidia Titan X 136032 Mpixels/sec
Radeon R9 390 8G 64000 Mpixels/sec
Difference: 72032 (113%)

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

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Nvidia Titan X

Amazon.com

Radeon R9 390 8G

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Nvidia Titan X Radeon R9 390 8G
Manufacturer nVidia AMD
Year August 2016 June 2015
Code Name GP102-400 Grenada PRO
Memory 12288 MB 8192 MB
Core Speed 1417 MHz 1000 MHz
Memory Speed 10008 MHz 6000 MHz
Power (Max TDP) 250 watts 275 watts
Bandwidth 491520 MB/sec 384000 MB/sec
Texel Rate 317408 Mtexels/sec 160000 Mtexels/sec
Pixel Rate 136032 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 3584 2560
Texture Mapping Units 224 160
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 ×16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high 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 number of texture units of the card by the core 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Nvidia Titan X

Amazon.com

Radeon R9 390 8G

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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