Gainward GeForce RTX 2080 Ti Phoenix vs Gigabyte GeForce GTX 660 WindForce 2X

VS
Gainward GeForce RTX 2080 Ti Phoenix
Gainward GeForce RTX 2080 Ti Phoenix Image
Gigabyte GeForce GTX 660 WindForce 2X
Gigabyte GeForce GTX 660 WindForce 2X Image
Gainward GeForce RTX 2080 Ti Phoenix
Gigabyte GeForce GTX 660 WindForce 2X
Key Differences Key Differences Gainward GeForce RTX 2080 Ti Phoenix Gigabyte GeForce GTX 660 WindForce 2X
GPU Base Clock Speed 1350MHz 980MHz
GPU Boost Clock Speed 1650MHz 1046MHz
Pixel Rate 138.6 GPixel/s 19.6 GPixel/s
GPU Memory Speed 1750MHz 1502MHz
GPU Render Output Units (ROPs) 88 24
No. of Supported Displays 4 4
Performance Performance Gainward GeForce RTX 2080 Ti Phoenix Gigabyte GeForce GTX 660 WindForce 2X
GPU Base Clock Speed 1350MHz 980MHz
Pixel Rate 138.6 GPixel/s 19.6 GPixel/s
FLOPS (Floating-point Performance) 13.71 TFLOPS 1.88 TFLOPS
Texture Filter Rate 428.4 GTexels/s 78.4 GTexels/s
GPU Memory Speed 1750MHz 1502MHz
Total GPU Shading Units 4352 960
Total GPU TMUs 272 80
GPU Boost Clock Speed 1650MHz 1046MHz
GPU Render Output Units (ROPs) 88 24
DPFP (Double Precision Floating Point) Support No No
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Features Features Gainward GeForce RTX 2080 Ti Phoenix Gigabyte GeForce GTX 660 WindForce 2X
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 2 1.1
Multi-display Tech Support Yes Yes
GPU Temperature Under Load 77°C 72°C
Idle GPU Temperature 31°C 30°C
3D Support Yes Yes
Noise Level Under Load 47.5dB 47.4dB
Idle Noise Level 41.5dB 40.8dB
Idle Power Consumption 54W 110W
Multi-GPU Support Count 2 Not Known
No. of Supported Displays 4 4
PassMark (G3D) Score Not Known 4104
3DMark Vantage Texture Fill Result Not Known 65.3GTexels/s
3DMark Vantage Pixel Fill Result Not Known 9.9GPixel/s
PassMark (DirectCompute) Benchmark Result Not Known 1933
Ray Tracing Support No No
Power Consumption Under Peak Load Not Known 296W
SmallLuxGPU (2.0d4) Result Not Known 5000
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Miscellaneous Miscellaneous Gainward GeForce RTX 2080 Ti Phoenix Gigabyte GeForce GTX 660 WindForce 2X
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports Gainward GeForce RTX 2080 Ti Phoenix Gigabyte GeForce GTX 660 WindForce 2X
HDMI Output Support Yes Yes
GPU HDMI Version 2 Not Known
DisplayPort Output 3 1
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 2
Mini DisplayPort Output 0 0
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General info General info Gainward GeForce RTX 2080 Ti Phoenix Gigabyte GeForce GTX 660 WindForce 2X
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 18600 million 2540 million
Semiconductor Size 12nm 28nm
PCI Express Version 3 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 292mm 256mm
Height 112mm 111mm
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Memory Memory Gainward GeForce RTX 2080 Ti Phoenix Gigabyte GeForce GTX 660 WindForce 2X
Effective Memory Clock 14000MHz 6008MHz
Max Memory Bandwidth 616GB/s 144GB/s
RAM 11GB 2GB
Memory Bus Interface Width 352bit 192bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No
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