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GeForce GTX 1660 Ti vs Radeon RX 6650 XT

Intro

The GeForce GTX 1660 Ti comes with a clock speed of 1500 MHz and a GDDR6 memory speed of 1500 MHz. It also makes use of a 192-bit bus, and makes use of a 12 nm design. It features 1536 SPUs, 96 TAUs, and 48 ROPs.

Compare that to the Radeon RX 6650 XT, which features 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.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti 120 Watts
Radeon RX 6650 XT 176 Watts
Difference: 56 Watts (47%)

Memory Bandwidth

In theory, the GeForce GTX 1660 Ti should be 3% faster than the Radeon RX 6650 XT overall, due to its greater bandwidth. (explain)

GeForce GTX 1660 Ti 294912 MB/sec
Radeon RX 6650 XT 287072 MB/sec
Difference: 7840 (3%)

Texel Rate

The Radeon RX 6650 XT is a lot (more or less 83%) better at anisotropic filtering than the GeForce GTX 1660 Ti. (explain)

Radeon RX 6650 XT 263040 Mtexels/sec
GeForce GTX 1660 Ti 144000 Mtexels/sec
Difference: 119040 (83%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 6650 XT is a better choice, and very much so. (explain)

Radeon RX 6650 XT 131520 Mpixels/sec
GeForce GTX 1660 Ti 72000 Mpixels/sec
Difference: 59520 (83%)

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 1660 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 1660 Ti Radeon RX 6650 XT
Manufacturer nVidia AMD
Year February 2019 May 2022
Code Name TU116-400-A1 Navi 23
Memory 6144 MB 8192 MB
Core Speed 1500 MHz 2055 MHz
Memory Speed 1500 GB/s 2190 GB/s
Power (Max TDP) 120 watts 176 watts
Bandwidth 294912 MB/sec 287072 MB/sec
Texel Rate 144000 Mtexels/sec 263040 Mtexels/sec
Pixel Rate 72000 Mpixels/sec 131520 Mpixels/sec
Unified Shaders 1536 2048
Texture Mapping Units 96 128
Render Output Units 48 64
Bus Type GDDR6 GDDR6
Bus Width 192-bit 128-bit
Fab Process 12 nm 7 nm
Transistors 6600 million 11060 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.6 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many 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 1660 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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