Radeon HD 7770 vs Radeon RX 5500 XT

Intro

Compare all that to the Radeon RX 5500 XT, which comes with GPU core speed of 1717 MHz, and 8192 MB of GDDR6 RAM running at 1750 MHz through a 128-bit bus. It also is made up of 1408 Stream Processors, 88 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 5500 XT		130 Watts
	Difference: 50 Watts (63%)

Memory Bandwidth

In theory, the Radeon RX 5500 XT should be 219% quicker than the Radeon HD 7770 in general, due to its higher bandwidth. (explain)

Radeon RX 5500 XT		229376 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 157376 (219%)

Texel Rate

The Radeon RX 5500 XT is much (more or less 278%) more effective at anisotropic filtering than the Radeon HD 7770. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 111096 (278%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 5500 XT is superior to the Radeon HD 7770, and very much so. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
Radeon HD 7770		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 maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling 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 could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. 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 bandwidth is, the lower the ability to reach the max fill rate.