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GeForce GTX 660 Ti vs Radeon RX 6500 XT

Intro

The GeForce GTX 660 Ti uses a 28 nm design. nVidia has clocked the core speed at 915 MHz. The GDDR5 RAM runs at a frequency of 1500 MHz on this particular card. It features 1344 SPUs along with 112 TAUs and 24 ROPs.

Compare those specifications to the Radeon RX 6500 XT, which has GPU clock speed of 2200 MHz, and 4096 MB of GDDR6 RAM set to run at 2250 MHz through a 64-bit bus. It also features 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

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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

The Radeon RX 6500 XT should in theory perform a little bit faster than the GeForce GTX 660 Ti overall. (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 will be a lot (approximately 37%) more effective at 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 a high screen resolution is important to you, then the Radeon RX 6500 XT is a better choice, and very much so. (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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 can be processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max 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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