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Radeon R9 Nano vs Radeon RX 6800

Intro

The Radeon R9 Nano has a core clock frequency of 1000 MHz and a HBM memory speed of 500 MHz. It also makes use of a 4096-bit bus, and makes use of a 28 nm design. It features 4096 SPUs, 256 TAUs, and 64 ROPs.

Compare those specifications to the Radeon RX 6800, which has GPU core speed of 1700 MHz, and 16384 MB of GDDR6 memory running at 2000 MHz through a 256-bit bus. It also is comprised of 3840 Stream Processors, 240 TAUs, and 96 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano 175 Watts
Radeon RX 6800 250 Watts
Difference: 75 Watts (43%)

Memory Bandwidth

The Radeon RX 6800 should theoretically be a little bit faster than the Radeon R9 Nano in general. (explain)

Radeon RX 6800 524288 MB/sec
Radeon R9 Nano 512000 MB/sec
Difference: 12288 (2%)

Texel Rate

The Radeon RX 6800 will be much (about 59%) better at AF than the Radeon R9 Nano. (explain)

Radeon RX 6800 408000 Mtexels/sec
Radeon R9 Nano 256000 Mtexels/sec
Difference: 152000 (59%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6800 is the winner, by a large margin. (explain)

Radeon RX 6800 163200 Mpixels/sec
Radeon R9 Nano 64000 Mpixels/sec
Difference: 99200 (155%)

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 R9 Nano

Amazon.com

Check prices at:

Radeon RX 6800

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 R9 Nano Radeon RX 6800
Manufacturer AMD AMD
Year September 2015 November 2020
Code Name Fiji XT Navi 21
Memory 4096 MB 16384 MB
Core Speed 1000 MHz 1700 MHz
Memory Speed 500 MHz 4000 GB/s
Power (Max TDP) 175 watts 250 watts
Bandwidth 512000 MB/sec 524288 MB/sec
Texel Rate 256000 Mtexels/sec 408000 Mtexels/sec
Pixel Rate 64000 Mpixels/sec 163200 Mpixels/sec
Unified Shaders 4096 3840
Texture Mapping Units 256 240
Render Output Units 64 96
Bus Type HBM GDDR6
Bus Width 4096-bit 256-bit
Fab Process 28 nm 7 nm
Transistors 8900 million 26800 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.6

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon R9 Nano

Amazon.com

Check prices at:

Radeon RX 6800

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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