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GeForce GTX 980 Ti vs Radeon RX 6650 XT

Intro

The GeForce GTX 980 Ti makes use of a 28 nm design. nVidia has set the core frequency at 1000 MHz. The GDDR5 RAM runs at a frequency of 1750 MHz on this card. It features 2816 SPUs as well as 176 TAUs and 96 ROPs.

Compare all of that to the Radeon RX 6650 XT, which has a clock speed of 2055 MHz and a GDDR6 memory frequency of 2190 MHz. It also makes use of a 128-bit bus, and uses a 7 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Display Graphs

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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

The GeForce GTX 980 Ti should theoretically perform a small bit faster than the Radeon RX 6650 XT overall. (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 is a lot (approximately 49%) faster with regards to texture filtering 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 (more or less 37%) better at AA than the GeForce GTX 980 Ti, and also will be capable of handling higher resolutions better. (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: Bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock 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 output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max 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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