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Radeon R9 Nano vs Radeon RX 6900 XT

Intro

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

Compare all of that to the Radeon RX 6900 XT, which has GPU core speed of 1825 MHz, and 16384 MB of GDDR6 memory set to run at 2000 MHz through a 256-bit bus. It also is made up of 5120 Stream Processors, 320 Texture Address Units, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano 175 Watts
Radeon RX 6900 XT 300 Watts
Difference: 125 Watts (71%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6900 XT should be a bit faster than the Radeon R9 Nano in general. (explain)

Radeon RX 6900 XT 524288 MB/sec
Radeon R9 Nano 512000 MB/sec
Difference: 12288 (2%)

Texel Rate

The Radeon RX 6900 XT is a lot (more or less 128%) more effective at texture filtering than the Radeon R9 Nano. (explain)

Radeon RX 6900 XT 584000 Mtexels/sec
Radeon R9 Nano 256000 Mtexels/sec
Difference: 328000 (128%)

Pixel Rate

The Radeon RX 6900 XT is quite a bit (approximately 265%) faster with regards to anti-aliasing than the Radeon R9 Nano, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 6900 XT 233600 Mpixels/sec
Radeon R9 Nano 64000 Mpixels/sec
Difference: 169600 (265%)

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

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Radeon RX 6900 XT

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 6900 XT
Manufacturer AMD AMD
Year September 2015 2020
Code Name Fiji XT Navi 21
Memory 4096 MB 16384 MB
Core Speed 1000 MHz 1825 MHz
Memory Speed 500 MHz 4000 GB/s
Power (Max TDP) 175 watts 300 watts
Bandwidth 512000 MB/sec 524288 MB/sec
Texel Rate 256000 Mtexels/sec 584000 Mtexels/sec
Pixel Rate 64000 Mpixels/sec 233600 Mpixels/sec
Unified Shaders 4096 5120
Texture Mapping Units 256 320
Render Output Units 64 128
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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon R9 Nano

Amazon.com

Check prices at:

Radeon RX 6900 XT

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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