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GeForce GTX 1080 vs Radeon RX 6650 XT

Intro

The GeForce GTX 1080 makes use of a 16 nm design. nVidia has clocked the core speed at 1607 MHz. The GDDR5X RAM works at a speed of 1251 MHz on this particular card. It features 2560 SPUs along with 160 Texture Address Units and 64 Rasterization Operator Units.

Compare that to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has clocked the core frequency at 2055 MHz. The GDDR6 RAM works at a speed of 2190 MHz on this specific model. It features 2048 SPUs along with 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT 176 Watts
GeForce GTX 1080 180 Watts
Difference: 4 Watts (2%)

Memory Bandwidth

Performance-wise, the GeForce GTX 1080 should theoretically be just a bit superior to the Radeon RX 6650 XT overall. (explain)

GeForce GTX 1080 327680 MB/sec
Radeon RX 6650 XT 287072 MB/sec
Difference: 40608 (14%)

Texel Rate

The Radeon RX 6650 XT should be a small bit (about 2%) more effective at AF than the GeForce GTX 1080. (explain)

Radeon RX 6650 XT 263040 Mtexels/sec
GeForce GTX 1080 257120 Mtexels/sec
Difference: 5920 (2%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 6650 XT is the winner, by far. (explain)

Radeon RX 6650 XT 131520 Mpixels/sec
GeForce GTX 1080 102848 Mpixels/sec
Difference: 28672 (28%)

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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GeForce GTX 1080

Amazon.com

Check prices at:

Radeon RX 6650 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 GeForce GTX 1080 Radeon RX 6650 XT
Manufacturer nVidia AMD
Year May 2016 May 2022
Code Name GP104-400 Navi 23
Memory 8192 MB 8192 MB
Core Speed 1607 MHz 2055 MHz
Memory Speed 10008 MHz 4380 GB/s
Power (Max TDP) 180 watts 176 watts
Bandwidth 327680 MB/sec 287072 MB/sec
Texel Rate 257120 Mtexels/sec 263040 Mtexels/sec
Pixel Rate 102848 Mpixels/sec 131520 Mpixels/sec
Unified Shaders 2560 2048
Texture Mapping Units 160 128
Render Output Units 64 64
Bus Type GDDR5X GDDR6
Bus Width 256-bit 128-bit
Fab Process 16 nm 7 nm
Transistors 7200 million 11060 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 largest amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video 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 Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 1080

Amazon.com

Check prices at:

Radeon RX 6650 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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