Geforce GTX 1080 Ti vs Radeon R9 M395X

Intro

Compare all that to the Radeon R9 M395X, which features core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Geforce GTX 1080 Ti		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

Performance-wise, the Geforce GTX 1080 Ti should in theory be quite a bit superior to the Radeon R9 M395X in general. (explain)

Geforce GTX 1080 Ti		495616 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 335616 (210%)

Texel Rate

The Geforce GTX 1080 Ti will be much (more or less 258%) faster with regards to anisotropic filtering than the Radeon R9 M395X. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 238976 (258%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Geforce GTX 1080 Ti is the winner, and very much so. (explain)

Geforce GTX 1080 Ti		130240 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 107104 (463%)

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 past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.