GeForce RTX 2080 SUPER vs Radeon HD 7870 XT

Intro

Compare those specifications to the Radeon HD 7870 XT, which features a core clock frequency of 925 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It features 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT		185 Watts
GeForce RTX 2080 SUPER		250 Watts
	Difference: 65 Watts (35%)

Memory Bandwidth

The GeForce RTX 2080 SUPER should theoretically be quite a bit faster than the Radeon HD 7870 XT overall. (explain)

GeForce RTX 2080 SUPER		507904 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 315904 (165%)

Texel Rate

The GeForce RTX 2080 SUPER is much (about 257%) better at anisotropic filtering than the Radeon HD 7870 XT. (explain)

GeForce RTX 2080 SUPER		316800 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 228000 (257%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce RTX 2080 SUPER is the winner, and very much so. (explain)

GeForce RTX 2080 SUPER		105600 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 76000 (257%)

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. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 can be applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.