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Radeon RX 6800 vs Radeon RX Vega 56

Intro

The Radeon RX 6800 uses a 7 nm design. AMD has clocked the core frequency at 1700 MHz. The GDDR6 memory works at a frequency of 2000 MHz on this specific card. It features 3840 SPUs as well as 240 Texture Address Units and 96 Rasterization Operator Units.

Compare those specifications to the Radeon RX Vega 56, which features a clock frequency of 1156 MHz and a HBM2 memory frequency of 1600 MHz. It also makes use of a 2048-bit bus, and uses a 14 nm design. It features 3584 SPUs, 224 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 Vega 56 210 Watts
Radeon RX 6800 250 Watts
Difference: 40 Watts (19%)

Memory Bandwidth

Performance-wise, the Radeon RX 6800 should theoretically be a lot better than the Radeon RX Vega 56 overall. (explain)

Radeon RX 6800 524288 MB/sec
Radeon RX Vega 56 419430 MB/sec
Difference: 104858 (25%)

Texel Rate

The Radeon RX 6800 should be a lot (about 58%) more effective at AF than the Radeon RX Vega 56. (explain)

Radeon RX 6800 408000 Mtexels/sec
Radeon RX Vega 56 258944 Mtexels/sec
Difference: 149056 (58%)

Pixel Rate

The Radeon RX 6800 is a lot (more or less 121%) better at anti-aliasing than the Radeon RX Vega 56, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 6800 163200 Mpixels/sec
Radeon RX Vega 56 73984 Mpixels/sec
Difference: 89216 (121%)

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

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Radeon RX 6800

Amazon.com

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Radeon RX Vega 56

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon RX 6800 Radeon RX Vega 56
Manufacturer AMD AMD
Year November 2020 September 2017
Code Name Navi 21 Vega 10 XL
Memory 16384 MB 8192 MB
Core Speed 1700 MHz 1156 MHz
Memory Speed 2000 GB/s 1600 MHz
Power (Max TDP) 250 watts 210 watts
Bandwidth 524288 MB/sec 419430 MB/sec
Texel Rate 408000 Mtexels/sec 258944 Mtexels/sec
Pixel Rate 163200 Mpixels/sec 73984 Mpixels/sec
Unified Shaders 3840 3584
Texture Mapping Units 240 224
Render Output Units 96 64
Bus Type GDDR6 HBM2
Bus Width 256-bit 2048-bit
Fab Process 7 nm 14 nm
Transistors 26800 million 12500 million
Bus PCIe 4.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.6 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon RX 6800

Amazon.com

Check prices at:

Radeon RX Vega 56

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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