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GeForce GTX 980 vs Radeon RX 6600 XT

Intro

The GeForce GTX 980 uses a 28 nm design. nVidia has clocked the core frequency at 1126 MHz. The GDDR5 memory works at a speed of 1750 MHz on this card. It features 2048 SPUs as well as 128 TAUs and 64 ROPs.

Compare all of that to the Radeon RX 6600 XT, which comes with core clock speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 memory. It features 2048 SPUs along with 128 TAUs and 64 Rasterization Operator Units.

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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

Performance-wise, the Radeon RX 6600 XT should theoretically be just a bit better 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 will be a lot (more or less 75%) faster with regards to texture 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

The Radeon RX 6600 XT should be quite a bit (more or less 75%) more effective at anti-aliasing than the GeForce GTX 980, and also should be able to handle higher resolutions more effectively. (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 max amount of data (measured in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 applied in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum 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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