Radeon HD 7790 vs Radeon RX 5700 XT

Intro

Compare those specs to the Radeon RX 5700 XT, which comes with core clock 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

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon RX 5700 XT		225 Watts
	Difference: 140 Watts (165%)

Memory Bandwidth

The Radeon RX 5700 XT should in theory perform a lot faster than the Radeon HD 7790 in general. (explain)

Radeon RX 5700 XT		458752 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 362752 (378%)

Texel Rate

The Radeon RX 5700 XT is quite a bit (more or less 359%) more effective at anisotropic filtering than the Radeon HD 7790. (explain)

Radeon RX 5700 XT		256800 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 200800 (359%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 5700 XT is a better choice, and very much so. (explain)

Radeon RX 5700 XT		102720 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 86720 (542%)

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 max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video 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 video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.