Radeon HD 7790 vs Radeon RX 5500 XT

Intro

Compare that to the Radeon RX 5500 XT, which has clock speeds of 1717 MHz on the GPU, and 1750 MHz on the 8192 MB of GDDR6 RAM. It features 1408 SPUs as well as 88 Texture Address Units and 32 Rasterization Operator Units.

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

Theoretically speaking, the Radeon RX 5500 XT should perform quite a bit faster 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 should be quite a bit (more or less 170%) faster with regards to texture 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

If running with a high resolution is important to you, then the Radeon RX 5500 XT is superior to the Radeon HD 7790, and very much so. (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 max amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.