Radeon RX 5700 XT vs Radeon RX Vega 56

Intro

Compare those specifications to the Radeon RX Vega 56, which has GPU clock speed of 1156 MHz, and 8192 MB of HBM2 RAM running at 1600 MHz through a 2048-bit bus. It also features 3584 Stream Processors, 224 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX Vega 56		210 Watts
Radeon RX 5700 XT		225 Watts
	Difference: 15 Watts (7%)

Memory Bandwidth

As far as performance goes, the Radeon RX 5700 XT should in theory be a little bit better than the Radeon RX Vega 56 in general. (explain)

Radeon RX 5700 XT		458752 MB/sec
Radeon RX Vega 56		419430 MB/sec
	Difference: 39322 (9%)

Texel Rate

The Radeon RX Vega 56 is just a bit (approximately 1%) more effective at anisotropic filtering than the Radeon RX 5700 XT. (explain)

Radeon RX Vega 56		258944 Mtexels/sec
Radeon RX 5700 XT		256800 Mtexels/sec
	Difference: 2144 (1%)

Pixel Rate

The Radeon RX 5700 XT is quite a bit (approximately 39%) faster with regards to FSAA than the Radeon RX Vega 56, and able to handle higher screen resolutions while still performing well. (explain)

Radeon RX 5700 XT		102720 Mpixels/sec
Radeon RX Vega 56		73984 Mpixels/sec
	Difference: 28736 (39%)

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 data (counted in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines 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 rate is also dependant on lots of 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.