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GeForce GTX 660 Ti vs Radeon RX 6500 XT

Intro

The GeForce GTX 660 Ti has a GPU clock speed of 915 MHz, and the 2048 MB of GDDR5 memory runs at 1500 MHz through a 192-bit bus. It also is made up of 1344 SPUs, 112 TAUs, and 24 ROPs.

Compare that to the Radeon RX 6500 XT, which comes with GPU clock speed of 2200 MHz, and 4096 MB of GDDR6 memory running at 2250 MHz through a 64-bit bus. It also is comprised of 1024 Stream Processors, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT 107 Watts
GeForce GTX 660 Ti 150 Watts
Difference: 43 Watts (40%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6500 XT will be 2% faster than the GeForce GTX 660 Ti overall, because of its greater data rate. (explain)

Radeon RX 6500 XT 147456 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 3456 (2%)

Texel Rate

The Radeon RX 6500 XT should be a lot (more or less 37%) faster with regards to anisotropic filtering than the GeForce GTX 660 Ti. (explain)

Radeon RX 6500 XT 140800 Mtexels/sec
GeForce GTX 660 Ti 102480 Mtexels/sec
Difference: 38320 (37%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6500 XT is the winner, by a large margin. (explain)

Radeon RX 6500 XT 70400 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 48440 (221%)

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 660 Ti

Amazon.com

Check prices at:

Radeon RX 6500 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 660 Ti Radeon RX 6500 XT
Manufacturer nVidia AMD
Year August 2012 January 2022
Code Name GK104 Navi 24 XT
Memory 2048 MB 4096 MB
Core Speed 915 MHz 2200 MHz
Memory Speed 6000 MHz 4500 GB/s
Power (Max TDP) 150 watts 107 watts
Bandwidth 144000 MB/sec 147456 MB/sec
Texel Rate 102480 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 70400 Mpixels/sec
Unified Shaders 1344 1024
Texture Mapping Units 112 64
Render Output Units 24 32
Bus Type GDDR5 GDDR6
Bus Width 192-bit 64-bit
Fab Process 28 nm 6 nm
Transistors 3540 million 5400 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.6

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 660 Ti

Amazon.com

Check prices at:

Radeon RX 6500 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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