Radeon RX 5700 XT vs Radeon RX Vega 64

Intro

Compare those specs to the Radeon RX Vega 64, which features GPU core speed of 1247 MHz, and 8192 MB of HBM2 memory set to run at 1890 MHz through a 2048-bit bus. It also features 4096 Stream Processors, 256 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5700 XT		225 Watts
Radeon RX Vega 64		295 Watts
	Difference: 70 Watts (31%)

Memory Bandwidth

The Radeon RX Vega 64 should in theory perform a bit faster than the Radeon RX 5700 XT in general. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon RX 5700 XT		458752 MB/sec
	Difference: 36659 (8%)

Texel Rate

The Radeon RX Vega 64 should be a lot (approximately 24%) better at AF than the Radeon RX 5700 XT. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon RX 5700 XT		256800 Mtexels/sec
	Difference: 62432 (24%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 5700 XT is the winner, by a large margin. (explain)

Radeon RX 5700 XT		102720 Mpixels/sec
Radeon RX Vega 64		79808 Mpixels/sec
	Difference: 22912 (29%)

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 data (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.