Radeon HD 7870 vs Radeon RX 5600

Intro

Compare all that to the Radeon RX 5600, which comes with core speeds of 1375 MHz on the GPU, and 1500 MHz on the 6144 MB of GDDR6 RAM. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600		150 Watts
Radeon HD 7870		175 Watts
	Difference: 25 Watts (17%)

Memory Bandwidth

In theory, the Radeon RX 5600 should perform much faster than the Radeon HD 7870 in general. (explain)

Radeon RX 5600		294912 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 141312 (92%)

Texel Rate

The Radeon RX 5600 will be much (more or less 120%) better at texture filtering than the Radeon HD 7870. (explain)

Radeon RX 5600		176000 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 96000 (120%)

Pixel Rate

The Radeon RX 5600 is a lot (approximately 175%) faster with regards to FSAA than the Radeon HD 7870, and able to handle higher screen resolutions more effectively. (explain)

Radeon RX 5600		88000 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 56000 (175%)

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. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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