Radeon HD 7790 vs Radeon RX 5500 XT

Intro

Compare that to the Radeon RX 5500 XT, which makes use of a 7 nm design. AMD has set the core speed at 1717 MHz. The GDDR6 memory works at a speed of 1750 MHz on this particular model. It features 1408 SPUs as well as 88 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon RX 5500 XT		130 Watts
	Difference: 45 Watts (53%)

Memory Bandwidth

As far as performance goes, the Radeon RX 5500 XT should in theory be quite a bit better than the Radeon HD 7790 in general. (explain)

Radeon RX 5500 XT		229376 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 133376 (139%)

Texel Rate

The Radeon RX 5500 XT will be quite a bit (approximately 170%) better at anisotropic filtering than the Radeon HD 7790. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 95096 (170%)

Pixel Rate

The Radeon RX 5500 XT is quite a bit (approximately 243%) more effective at anti-aliasing than the Radeon HD 7790, and also will be able to handle higher resolutions more effectively. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 38944 (243%)

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 transported over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. 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 is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.