GeForce RTX 2080 vs Radeon R9 M390X

Intro

Compare those specifications to the Radeon R9 M390X, which has GPU clock speed of 723 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
GeForce RTX 2080		215 Watts
	Difference: 90 Watts (72%)

Memory Bandwidth

Performance-wise, the GeForce RTX 2080 should theoretically be quite a bit superior to the Radeon R9 M390X overall. (explain)

GeForce RTX 2080		458752 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 298752 (187%)

Texel Rate

The GeForce RTX 2080 should be a lot (approximately 201%) faster with regards to texture filtering than the Radeon R9 M390X. (explain)

GeForce RTX 2080		278760 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 186216 (201%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce RTX 2080 is superior to the Radeon R9 M390X, and very much so. (explain)

GeForce RTX 2080		96960 Mpixels/sec
Radeon R9 M390X		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 data (measured in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.