Radeon HD 7950 3GB vs Radeon RX 6500 XT

Intro

Compare all of that to the Radeon RX 6500 XT, which features a GPU core clock speed of 2200 MHz, and 4096 MB of GDDR6 memory set to run at 2250 MHz through a 64-bit bus. It also features 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 93 Watts (87%)

Memory Bandwidth

In theory, the Radeon HD 7950 3GB should be 63% quicker than the Radeon RX 6500 XT overall, because of its greater data rate. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 92544 (63%)

Texel Rate

The Radeon RX 6500 XT should be quite a bit (approximately 57%) better at texture filtering than the Radeon HD 7950 3GB. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 51200 (57%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 6500 XT is superior to the Radeon HD 7950 3GB, and very much so. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 44800 (175%)

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 (in units of MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range 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 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 handling 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 its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.