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 clocked the core speed at 1717 MHz. The GDDR6 memory is set to run at a frequency of 1750 MHz on this model. It features 1408 SPUs as well as 88 TAUs 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

Performance-wise, the Radeon RX 5500 XT should in theory be quite a bit better than the Radeon HD 7790 overall. (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 a lot (more or less 170%) more effective 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 should be a lot (about 243%) more effective at full screen anti-aliasing than the Radeon HD 7790, and will be able to handle higher resolutions without slowing down too much. (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: Bandwidth is the max amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.