Radeon HD 7850 vs Radeon RX 6500 XT

Intro

Compare those specifications to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has clocked the core frequency at 2200 MHz. The GDDR6 RAM runs at a frequency of 2250 MHz on this particular model. It features 1024 SPUs as well as 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon HD 7850		130 Watts
	Difference: 23 Watts (21%)

Memory Bandwidth

The Radeon HD 7850 should theoretically perform just a bit faster than the Radeon RX 6500 XT overall. (explain)

Radeon HD 7850		153600 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 6144 (4%)

Texel Rate

The Radeon RX 6500 XT is quite a bit (about 156%) more effective at AF than the Radeon HD 7850. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 85760 (156%)

Pixel Rate

The Radeon RX 6500 XT is much (approximately 156%) better at full screen anti-aliasing than the Radeon HD 7850, and also should be capable of handling higher resolutions better. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 42880 (156%)

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 largest amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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 get to the max fill rate.