Radeon HD 4890 1GB vs Radeon RX 6500 XT

Intro

Compare those specifications to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has set the core frequency at 2200 MHz. The GDDR6 memory is set to run at a frequency of 2250 MHz on this model. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon HD 4890 1GB		190 Watts
	Difference: 83 Watts (78%)

Memory Bandwidth

Performance-wise, the Radeon RX 6500 XT should in theory be just a bit better than the Radeon HD 4890 1GB overall. (explain)

Radeon RX 6500 XT		147456 MB/sec
Radeon HD 4890 1GB		124800 MB/sec
	Difference: 22656 (18%)

Texel Rate

The Radeon RX 6500 XT is much (more or less 252%) better at anisotropic filtering than the Radeon HD 4890 1GB. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 4890 1GB		40000 Mtexels/sec
	Difference: 100800 (252%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6500 XT is the winner, by far. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 4890 1GB		16000 Mpixels/sec
	Difference: 54400 (340%)

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: Bandwidth is the maximum amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 figure is worked out by multiplying the total 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 - the lower the bandwidth is, the lower the potential to reach the max fill rate.