Radeon HD 7950 vs Radeon RX 7900 XTX

Intro

Compare those specs to the Radeon RX 7900 XTX, which features a clock speed of 1855 MHz and a GDDR6 memory speed of 2500 MHz. It also makes use of a 384-bit memory bus, and uses a 5 nm design. It is comprised of 6144 SPUs, 384 TAUs, and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950		200 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 155 Watts (78%)

Memory Bandwidth

As far as performance goes, the Radeon RX 7900 XTX should theoretically be much better than the Radeon HD 7950 in general. (explain)

Radeon RX 7900 XTX		983040 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 743040 (310%)

Texel Rate

The Radeon RX 7900 XTX will be quite a bit (about 695%) more effective at texture filtering than the Radeon HD 7950. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 622720 (695%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 7900 XTX is a better choice, by a large margin. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 330560 (1291%)

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 data (counted in MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.