Radeon HD 4890 2GB vs Radeon RX 5600

Intro

Compare all that to the Radeon RX 5600, which comes with 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 is comprised of 2048 SPUs, 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 4890 2GB		190 Watts
	Difference: 40 Watts (27%)

Memory Bandwidth

In theory, the Radeon RX 5600 will be 136% faster than the Radeon HD 4890 2GB in general, because of its higher data rate. (explain)

Radeon RX 5600		294912 MB/sec
Radeon HD 4890 2GB		124800 MB/sec
	Difference: 170112 (136%)

Texel Rate

The Radeon RX 5600 is much (approximately 340%) more effective at texture filtering than the Radeon HD 4890 2GB. (explain)

Radeon RX 5600		176000 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 136000 (340%)

Pixel Rate

The Radeon RX 5600 is quite a bit (approximately 450%) more effective at full screen anti-aliasing than the Radeon HD 4890 2GB, and capable of handling higher resolutions better. (explain)

Radeon RX 5600		88000 Mpixels/sec
Radeon HD 4890 2GB		16000 Mpixels/sec
	Difference: 72000 (450%)

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 data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.