Radeon RX 5700 XT vs Radeon RX Vega 64

Intro

Compare those specifications to the Radeon RX Vega 64, which uses a 14 nm design. AMD has clocked the core frequency at 1247 MHz. The HBM2 memory is set to run at a speed of 1890 MHz on this model. It features 4096 SPUs along with 256 TAUs 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

Performance-wise, the Radeon RX Vega 64 should in theory be a bit better than the Radeon RX 5700 XT overall. (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 will be a lot (approximately 24%) faster with regards to anisotropic filtering 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 using a high resolution 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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at 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 the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. 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 fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.