Radeon HD 4890 2GB vs Radeon RX 6500 XT

Intro

Compare those specs to the Radeon RX 6500 XT, which has core speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 RAM. It features 1024 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon HD 4890 2GB		190 Watts
	Difference: 83 Watts (78%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6500 XT should be 18% quicker than the Radeon HD 4890 2GB overall, because of its higher data rate. (explain)

Radeon RX 6500 XT		147456 MB/sec
Radeon HD 4890 2GB		124800 MB/sec
	Difference: 22656 (18%)

Texel Rate

The Radeon RX 6500 XT will be a lot (more or less 252%) better at anisotropic filtering than the Radeon HD 4890 2GB. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 100800 (252%)

Pixel Rate

The Radeon RX 6500 XT will be much (about 340%) more effective at AA than the Radeon HD 4890 2GB, and should be capable of handling higher screen resolutions better. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 4890 2GB		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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip 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 number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.