GeForce RTX 2080 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which comes with a clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce RTX 2080		215 Watts
	Difference: 90 Watts (72%)

Memory Bandwidth

Theoretically, the GeForce RTX 2080 should perform much faster than the Radeon R9 M395X overall. (explain)

GeForce RTX 2080		458752 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 298752 (187%)

Texel Rate

The GeForce RTX 2080 should be quite a bit (more or less 201%) faster with regards to AF than the Radeon R9 M395X. (explain)

GeForce RTX 2080		278760 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 186216 (201%)

Pixel Rate

The GeForce RTX 2080 is much (approximately 319%) more effective at anti-aliasing than the Radeon R9 M395X, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce RTX 2080		96960 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 73824 (319%)

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 (counted in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.