Radeon HD 4870 2GB vs Radeon RX 5600

Intro

Compare those specs to the Radeon RX 5600, which comes with GPU clock speed of 1375 MHz, and 6144 MB of GDDR6 RAM set to run at 1500 MHz through a 192-bit bus. It also features 2048 SPUs, 128 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon RX 5600 should in theory be a lot faster than the Radeon HD 4870 2GB in general. (explain)

Radeon RX 5600		294912 MB/sec
Radeon HD 4870 2GB		115200 MB/sec
	Difference: 179712 (156%)

Texel Rate

The Radeon RX 5600 will be a lot (about 487%) better at texture filtering than the Radeon HD 4870 2GB. (explain)

Radeon RX 5600		176000 Mtexels/sec
Radeon HD 4870 2GB		30000 Mtexels/sec
	Difference: 146000 (487%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 5600 is superior to the Radeon HD 4870 2GB, by a large margin. (explain)

Radeon RX 5600		88000 Mpixels/sec
Radeon HD 4870 2GB		12000 Mpixels/sec
	Difference: 76000 (633%)

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 maximum amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 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 figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.