Radeon HD 7950 vs Radeon RX 6650 XT

Intro

Compare that to the Radeon RX 6650 XT, which has core clock speeds of 2055 MHz on the GPU, and 2190 MHz on the 8192 MB of GDDR6 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon HD 7950		200 Watts
	Difference: 24 Watts (14%)

Memory Bandwidth

Theoretically, the Radeon RX 6650 XT should be a bit faster than the Radeon HD 7950 in general. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 47072 (20%)

Texel Rate

The Radeon RX 6650 XT will be a lot (more or less 194%) better at anisotropic filtering than the Radeon HD 7950. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 173440 (194%)

Pixel Rate

The Radeon RX 6650 XT should be a lot (more or less 414%) more effective at anti-aliasing than the Radeon HD 7950, and also able to handle higher screen resolutions more effectively. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 105920 (414%)

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 data (in units of megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics 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 amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.