Radeon HD 7850 vs Radeon RX 5700 XT

Intro

Compare those specs to the Radeon RX 5700 XT, which features core speeds of 1605 MHz on the GPU, and 1750 MHz on the 8096 MB of GDDR6 memory. It features 2560 SPUs along with 160 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon RX 5700 XT		225 Watts
	Difference: 95 Watts (73%)

Memory Bandwidth

As far as performance goes, the Radeon RX 5700 XT should theoretically be much superior to the Radeon HD 7850 in general. (explain)

Radeon RX 5700 XT		458752 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 305152 (199%)

Texel Rate

The Radeon RX 5700 XT is much (more or less 367%) faster with regards to anisotropic filtering than the Radeon HD 7850. (explain)

Radeon RX 5700 XT		256800 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 201760 (367%)

Pixel Rate

The Radeon RX 5700 XT is much (approximately 273%) faster with regards to full screen anti-aliasing than the Radeon HD 7850, and also able to handle higher resolutions better. (explain)

Radeon RX 5700 XT		102720 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 75200 (273%)

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 largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.