Nvidia Titan Xp vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which features GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
Nvidia Titan Xp		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

Theoretically, the Nvidia Titan Xp should be much faster than the Radeon R9 M390X in general. (explain)

Nvidia Titan Xp		560845 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 400845 (251%)

Texel Rate

The Nvidia Titan Xp will be much (approximately 310%) more effective at anisotropic filtering than the Radeon R9 M390X. (explain)

Nvidia Titan Xp		379680 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 287136 (310%)

Pixel Rate

The Nvidia Titan Xp should be quite a bit (more or less 556%) faster with regards to anti-aliasing than the Radeon R9 M390X, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Nvidia Titan Xp		151872 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 128736 (556%)

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

Specifications

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

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

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