AMD Radeon RX 6600 XT vs Nvidia GeForce GTX 1660 Super

AMD Radeon RX 6600 XT on Amazon USA
Nvidia GeForce GTX 1660 Super on Amazon USA

Comparison of the technical characteristics between the graphics cards, with AMD Radeon RX 6600 XT on one side and Nvidia GeForce GTX 1660 Super on the other side. The first is dedicated to the desktop sector, it has 2048 shading units, a maximum frequency of 1.6 GHz, its lithography is 7 nm. The second is used on the desktop segment, it includes 1408 shading units, a maximum frequency of 1.8 GHz, its lithography is 12 nm. The following table also compares the boost clock, the number of shading units (if indicated), of execution units, the amount of cache memory, the maximum memory capacity, the memory bus width, the release date, the number of PCIe lanes, the values ​​obtained in various benchmarks.


Graphics card AMD Radeon RX 6600 XT Nvidia GeForce GTX 1660 Super
Market (main) Desktop Desktop
Release date Q3 2021 Q4 2019
Model number Navi 23 XT TU116-300-A1
GPU name Navi 23 TU116
Architecture RDNA 2.0 Turing
Generation Navi II RX 6000 GeForce 16
Lithography 7 nm 12 nm
Transistors 11,060,000,000 6,600,000,000
Bus interface PCIe 4.0 x16 PCIe 3.0 x16
GPU base clock 1.97 GHz 1.53 GHz
GPU boost clock 1.59 GHz 1.79 GHz
Memory frequency 2,000 MHz 1,750 MHz
Effective memory speed 16 GB/s 14 GB/s
Memory size 8 GB 6 GB
Memory type GDDR6 GDDR6
Memory bus 128 bit 192 bit
Memory bandwidth 256 GB/s 336 GB/s
TDP 160 W 125 W
Suggested PSU450W ATX Power Supply 450W ATX Power Supply
Multicard technology - -

2x DisplayPort

1x DVI
1x DisplayPort
Maximum GPU Temperature 110°C 93°C
Cores (compute units, SM, SMX) 32 22
Shading units (cuda cores) 2,048 1,408
TMUs 128 88
ROPs 64 48
Cache memory 32 MB 1.5 MB
Pixel fillrate 165.7 GP/s 85.7 GP/s
Texture fillrate 331.4 GT/s 157.1 GT/s
Performance FP16 (half) 21.2 TFLOPS 10.1 TFLOPS
Performance FP32 (float) 10.6 TFLOPS 5.0 TFLOPS
Performance FP64 (double) 662.8 GFLOPS 157.1 GFLOPS

Price: For technical reasons, we cannot currently display a price less than 24 hours, or a real-time price. This is why we prefer for the moment not to show a price. You should refer to the respective online stores for the latest price, as well as availability.

We can better compare what are the technical differences between the two graphics cards.

Performances :

Performance comparison between the two processors, for this we consider the results generated on benchmark software such as Geekbench 4.

FP32 Performance in GFLOPS
AMD Radeon RX 6600 XT 10,600
Nvidia GeForce GTX 1660 Super 5,027

The difference is 111%.

Single precision floating point format, also known as FP32, is a computer number format that typically occupies 32 bits in PC memory. This represents a wide dynamic range of numeric values that employs a floating point.


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