Radeon RX 5500 XT vs Radeon RX Vega 64

Intro

Compare those specifications to the Radeon RX Vega 64, which features GPU clock speed of 1247 MHz, and 8192 MB of HBM2 RAM set to run at 1890 MHz through a 2048-bit bus. It also is comprised of 4096 SPUs, 256 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500 XT		130 Watts
Radeon RX Vega 64		295 Watts
	Difference: 165 Watts (127%)

Memory Bandwidth

Performance-wise, the Radeon RX Vega 64 should in theory be quite a bit better than the Radeon RX 5500 XT in general. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon RX 5500 XT		229376 MB/sec
	Difference: 266035 (116%)

Texel Rate

The Radeon RX Vega 64 will be a lot (more or less 111%) more effective at AF than the Radeon RX 5500 XT. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon RX 5500 XT		151096 Mtexels/sec
	Difference: 168136 (111%)

Pixel Rate

The Radeon RX Vega 64 will be much (more or less 45%) better at FSAA than the Radeon RX 5500 XT, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
Radeon RX 5500 XT		54944 Mpixels/sec
	Difference: 24864 (45%)

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 MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, the result 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 anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.