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GeForce GTX 980 Ti vs Radeon RX 6650 XT

Intro

The GeForce GTX 980 Ti has a GPU core clock speed of 1000 MHz, and the 6144 MB of GDDR5 RAM is set to run at 1750 MHz through a 384-bit bus. It also is comprised of 2816 Stream Processors, 176 Texture Address Units, and 96 Raster Operation Units.

Compare all of that to the Radeon RX 6650 XT, which features core clock speeds of 2055 MHz on the GPU, and 2190 MHz on the 8192 MB of GDDR6 memory. It features 2048 SPUs along with 128 TAUs and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT 176 Watts
GeForce GTX 980 Ti 250 Watts
Difference: 74 Watts (42%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 Ti should be 17% faster than the Radeon RX 6650 XT in general, because of its greater bandwidth. (explain)

GeForce GTX 980 Ti 336000 MB/sec
Radeon RX 6650 XT 287072 MB/sec
Difference: 48928 (17%)

Texel Rate

The Radeon RX 6650 XT should be quite a bit (approximately 49%) better at AF than the GeForce GTX 980 Ti. (explain)

Radeon RX 6650 XT 263040 Mtexels/sec
GeForce GTX 980 Ti 176000 Mtexels/sec
Difference: 87040 (49%)

Pixel Rate

The Radeon RX 6650 XT is much (about 37%) faster with regards to anti-aliasing than the GeForce GTX 980 Ti, and able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 6650 XT 131520 Mpixels/sec
GeForce GTX 980 Ti 96000 Mpixels/sec
Difference: 35520 (37%)

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 Ti

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 980 Ti Radeon RX 6650 XT
Manufacturer nVidia AMD
Year June 2015 May 2022
Code Name GM200 Navi 23
Memory 6144 MB 8192 MB
Core Speed 1000 MHz 2055 MHz
Memory Speed 7000 MHz 4380 GB/s
Power (Max TDP) 250 watts 176 watts
Bandwidth 336000 MB/sec 287072 MB/sec
Texel Rate 176000 Mtexels/sec 263040 Mtexels/sec
Pixel Rate 96000 Mpixels/sec 131520 Mpixels/sec
Unified Shaders 2816 2048
Texture Mapping Units 176 128
Render Output Units 96 64
Bus Type GDDR5 GDDR6
Bus Width 384-bit 128-bit
Fab Process 28 nm 7 nm
Transistors 8000 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 max amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. 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 quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 980 Ti

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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