Radeon HD 7870 vs Radeon RX 5600

Intro

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

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

Theoretically speaking, the Radeon RX 5600 will be 92% faster than the Radeon HD 7870 in general, due to its greater data rate. (explain)

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

Texel Rate

The Radeon RX 5600 will be quite a bit (more or less 120%) better at AF 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 will be a lot (approximately 175%) more effective at FSAA than the Radeon HD 7870, and able to handle higher screen resolutions without losing too much performance. (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 max amount of data (measured in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at 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 can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate 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 filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.