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GeForce GTX 1080 vs Radeon RX 6650 XT

Intro

The GeForce GTX 1080 has a core clock frequency of 1607 MHz and a GDDR5X memory speed of 1251 MHz. It also makes use of a 256-bit memory bus, and uses a 16 nm design. It is comprised of 2560 SPUs, 160 TAUs, and 64 ROPs.

Compare those specifications to the Radeon RX 6650 XT, which comes with a GPU core clock speed of 2055 MHz, and 8192 MB of GDDR6 RAM set to run at 2190 MHz through a 128-bit bus. It also is comprised of 2048 Stream Processors, 128 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 6650 XT 176 Watts
GeForce GTX 1080 180 Watts
Difference: 4 Watts (2%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 1080 should in theory be just a bit superior to the Radeon RX 6650 XT in general. (explain)

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

Texel Rate

The Radeon RX 6650 XT will be a bit (about 2%) faster with regards to texture filtering than the GeForce GTX 1080. (explain)

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

Pixel Rate

The Radeon RX 6650 XT will be quite a bit (more or less 28%) more effective at full screen anti-aliasing than the GeForce GTX 1080, and also should be able to handle higher resolutions more effectively. (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: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. 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 better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability 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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