Radeon HD 4890 1GB vs Radeon RX 6500 XT

Intro

Compare that to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has clocked the core speed at 2200 MHz. The GDDR6 RAM works at a frequency of 2250 MHz on this card. It features 1024 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

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

Theoretically speaking, the Radeon RX 6500 XT should perform a small bit faster 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 (approximately 252%) more effective 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

The Radeon RX 6500 XT is much (approximately 340%) faster with regards to FSAA than the Radeon HD 4890 1GB, and able to handle higher resolutions more effectively. (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 largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 texture map elements (texels) that can be processed in one 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 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 one second.

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