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GeForce GTX 780 Ti vs Radeon RX 6650 XT

Intro

The GeForce GTX 780 Ti has clock speeds of 875 MHz on the GPU, and 1750 MHz on the 3072 MB of GDDR5 memory. It features 2880 SPUs as well as 240 TAUs and 48 Rasterization Operator Units.

Compare those specifications to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has clocked the core speed at 2055 MHz. The GDDR6 memory runs at a frequency of 2190 MHz on this particular model. It features 2048 SPUs along with 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 780 Ti 250 Watts
Difference: 74 Watts (42%)

Memory Bandwidth

The GeForce GTX 780 Ti should theoretically be a little bit faster than the Radeon RX 6650 XT in general. (explain)

GeForce GTX 780 Ti 336000 MB/sec
Radeon RX 6650 XT 287072 MB/sec
Difference: 48928 (17%)

Texel Rate

The Radeon RX 6650 XT is much (more or less 25%) more effective at texture filtering than the GeForce GTX 780 Ti. (explain)

Radeon RX 6650 XT 263040 Mtexels/sec
GeForce GTX 780 Ti 210000 Mtexels/sec
Difference: 53040 (25%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 6650 XT is the winner, by far. (explain)

Radeon RX 6650 XT 131520 Mpixels/sec
GeForce GTX 780 Ti 42000 Mpixels/sec
Difference: 89520 (213%)

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 780 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 780 Ti Radeon RX 6650 XT
Manufacturer nVidia AMD
Year November 2013 May 2022
Code Name GK110 Navi 23
Memory 3072 MB 8192 MB
Core Speed 875 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 210000 Mtexels/sec 263040 Mtexels/sec
Pixel Rate 42000 Mpixels/sec 131520 Mpixels/sec
Unified Shaders 2880 2048
Texture Mapping Units 240 128
Render Output Units 48 64
Bus Type GDDR5 GDDR6
Bus Width 384-bit 128-bit
Fab Process 28 nm 7 nm
Transistors 7080 million 11060 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.4 OpenGL 4.6

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's 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 amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 780 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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