GeForce RTX 2080 Ti vs Radeon R9 M390X

Intro

Compare those specs to the Radeon R9 M390X, which uses a 28 nm design. AMD has set the core speed at 723 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this particular card. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
GeForce RTX 2080 Ti		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 2080 Ti should be 294% faster than the Radeon R9 M390X overall, because of its greater data rate. (explain)

GeForce RTX 2080 Ti		630784 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 470784 (294%)

Texel Rate

The GeForce RTX 2080 Ti should be quite a bit (more or less 297%) faster with regards to AF than the Radeon R9 M390X. (explain)

GeForce RTX 2080 Ti		367200 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 274656 (297%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce RTX 2080 Ti is a better choice, and very much so. (explain)

GeForce RTX 2080 Ti		118800 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 95664 (413%)

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 largest amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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