Nvidia Titan X vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which uses a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this specific card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator 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

In theory, the Nvidia Titan X is 207% faster than the Radeon R9 M395X overall, because of its higher bandwidth. (explain)

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

Texel Rate

The Nvidia Titan X is quite a bit (about 243%) faster with regards to 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 a lot (approximately 488%) better at FSAA than the Radeon R9 M395X, and should be capable of handling higher screen resolutions without losing too much performance. (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 maximum amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at 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 chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.