Radeon HD 5970 vs Radeon RX 6650 XT

Intro

Compare those specs to the Radeon RX 6650 XT, which features core speeds of 2055 MHz on the GPU, and 2190 MHz on the 8192 MB of GDDR6 memory. 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 5970		294 Watts
	Difference: 118 Watts (67%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT should be 12% faster than the Radeon HD 5970 in general, because of its higher bandwidth. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon HD 5970		256000 MB/sec
	Difference: 31072 (12%)

Texel Rate

The Radeon RX 6650 XT should be just a bit (about 13%) better at AF than the Radeon HD 5970. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon HD 5970		232000 Mtexels/sec
	Difference: 31040 (13%)

Pixel Rate

The Radeon RX 6650 XT should be much (approximately 42%) more effective at full screen anti-aliasing than the Radeon HD 5970, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon HD 5970		92800 Mpixels/sec
	Difference: 38720 (42%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.