Compare any two graphics cards:
Radeon HD 7970 vs Radeon RX 5500
IntroThe Radeon HD 7970 makes use of a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 RAM works at a speed of 1375 MHz on this card. It features 2048 SPUs along with 128 TAUs and 32 ROPs.
Compare all of that to the Radeon RX 5500, which has GPU core speed of 1670 MHz, and 4096 MB of GDDR6 RAM running at 14000 MHz through a 128-bit bus. It also is comprised of 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the Radeon HD 7970 should perform just a bit faster than the Radeon RX 5500 in general. (explain)
Texel RateThe Radeon RX 5500 will be quite a bit (about 24%) better at AF than the Radeon HD 7970. (explain)
Pixel RateThe Radeon RX 5500 should be a lot (approximately 81%) better at anti-aliasing than the Radeon HD 7970, and capable of handling higher resolutions better. (explain)
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.
Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 potential to get to the maximum fill rate.