Radeon HD 7870 XT vs Radeon RX 5600

Intro

Compare that to the Radeon RX 5600, which has a clock frequency of 1375 MHz and a GDDR6 memory speed of 1500 MHz. It also features a 192-bit bus, and uses a 7 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600		150 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 35 Watts (23%)

Memory Bandwidth

In theory, the Radeon RX 5600 should be much faster than the Radeon HD 7870 XT overall. (explain)

Radeon RX 5600		294912 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 102912 (54%)

Texel Rate

The Radeon RX 5600 will be quite a bit (more or less 98%) more effective at anisotropic filtering than the Radeon HD 7870 XT. (explain)

Radeon RX 5600		176000 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 87200 (98%)

Pixel Rate

The Radeon RX 5600 is quite a bit (more or less 197%) better at AA than the Radeon HD 7870 XT, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 5600		88000 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 58400 (197%)

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 (in units of megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.