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GeForce GTX 980 vs Radeon RX 6600 XT

Intro

The GeForce GTX 980 comes with a GPU core clock speed of 1126 MHz, and the 4096 MB of GDDR5 RAM is set to run at 1750 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Compare all of that to the Radeon RX 6600 XT, which comes with GPU clock speed of 1968 MHz, and 8192 MB of GDDR6 RAM set to run at 2000 MHz through a 128-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT 160 Watts
GeForce GTX 980 165 Watts
Difference: 5 Watts (3%)

Memory Bandwidth

Theoretically, the Radeon RX 6600 XT should be just a bit faster than the GeForce GTX 980 overall. (explain)

Radeon RX 6600 XT 262144 MB/sec
GeForce GTX 980 224000 MB/sec
Difference: 38144 (17%)

Texel Rate

The Radeon RX 6600 XT is a lot (about 75%) faster with regards to anisotropic filtering than the GeForce GTX 980. (explain)

Radeon RX 6600 XT 251904 Mtexels/sec
GeForce GTX 980 144128 Mtexels/sec
Difference: 107776 (75%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6600 XT is superior to the GeForce GTX 980, by a large margin. (explain)

Radeon RX 6600 XT 125952 Mpixels/sec
GeForce GTX 980 72064 Mpixels/sec
Difference: 53888 (75%)

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 980

Amazon.com

Check prices at:

Radeon RX 6600 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 980 Radeon RX 6600 XT
Manufacturer nVidia AMD
Year September 2014 August 2021
Code Name GM204-400 Navi 23 XT
Memory 4096 MB 8192 MB
Core Speed 1126 MHz 1968 MHz
Memory Speed 7000 MHz 4000 GB/s
Power (Max TDP) 165 watts 160 watts
Bandwidth 224000 MB/sec 262144 MB/sec
Texel Rate 144128 Mtexels/sec 251904 Mtexels/sec
Pixel Rate 72064 Mpixels/sec 125952 Mpixels/sec
Unified Shaders 2048 2048
Texture Mapping Units 128 128
Render Output Units 64 64
Bus Type GDDR5 GDDR6
Bus Width 256-bit 128-bit
Fab Process 28 nm 7 nm
Transistors 5200 million 11060 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 11.2 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.6

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 980

Amazon.com

Check prices at:

Radeon RX 6600 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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