Nvidia Titan X vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which has a clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is comprised 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 M395X		125 Watts
Nvidia Titan X		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

The Nvidia Titan X should in theory perform a lot faster than the Radeon R9 M395X in general. (explain)

Nvidia Titan X		491520 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 331520 (207%)

Texel Rate

The Nvidia Titan X will be much (more or less 243%) better at anisotropic filtering than the Radeon R9 M395X. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 224864 (243%)

Pixel Rate

The Nvidia Titan X should be much (approximately 488%) better at FSAA than the Radeon R9 M395X, and capable of handling higher screen resolutions more effectively. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 112896 (488%)

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: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour 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 is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.