Radeon HD 7950 vs Radeon RX 6700 XT

Intro

Compare all that to the Radeon RX 6700 XT, which makes use of a 7 nm design. AMD has set the core speed at 2321 MHz. The GDDR6 RAM works at a speed of 2000 MHz on this model. It features 2560 SPUs as well as 160 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950		200 Watts
Radeon RX 6700 XT		230 Watts
	Difference: 30 Watts (15%)

Memory Bandwidth

In theory, the Radeon RX 6700 XT is 64% faster than the Radeon HD 7950 in general, due to its greater bandwidth. (explain)

Radeon RX 6700 XT		393216 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 153216 (64%)

Texel Rate

The Radeon RX 6700 XT is a lot (more or less 314%) faster with regards to anisotropic filtering than the Radeon HD 7950. (explain)

Radeon RX 6700 XT		371360 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 281760 (314%)

Pixel Rate

The Radeon RX 6700 XT should be a lot (about 480%) faster with regards to anti-aliasing than the Radeon HD 7950, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 6700 XT		148544 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 122944 (480%)

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 information (counted in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are 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 better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.