Radeon HD 7950 vs Radeon RX 6600 XT

Intro

Compare all that to the Radeon RX 6600 XT, which has a clock speed of 1968 MHz and a GDDR6 memory frequency of 2000 MHz. It also features a 128-bit bus, and uses a 7 nm design. It is made up of 2048 SPUs, 128 TAUs, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Radeon HD 7950		200 Watts
	Difference: 40 Watts (25%)

Memory Bandwidth

The Radeon RX 6600 XT, in theory, should perform a bit faster than the Radeon HD 7950 overall. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 22144 (9%)

Texel Rate

The Radeon RX 6600 XT should be much (more or less 181%) better at AF than the Radeon HD 7950. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 162304 (181%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6600 XT is superior to the Radeon HD 7950, and very much so. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 100352 (392%)

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 maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the 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 number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.