PowerColor Red Devil Radeon RX 6800 XT vs Gainward GeForce GTX 660 Ti Phantom

VS
PowerColor Red Devil Radeon RX 6800 XT
PowerColor Red Devil Radeon RX 6800 XT Image
Gainward GeForce GTX 660 Ti Phantom
Gainward GeForce GTX 660 Ti Phantom Image
PowerColor Red Devil Radeon RX 6800 XT
Gainward GeForce GTX 660 Ti Phantom
Key Differences Key Differences PowerColor Red Devil Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
GPU Base Clock Speed 1900MHz 1006MHz
GPU Boost Clock Speed 2340MHz 1084MHz
Pixel Rate 299.5 GPixel/s 28.2 GPixel/s
GPU Memory Speed 2000MHz 1527MHz
GPU Render Output Units (ROPs) 128 24
No. of Supported Displays 4 4
Performance Performance PowerColor Red Devil Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
GPU Base Clock Speed 1900MHz 1006MHz
Pixel Rate 299.5 GPixel/s 28.2 GPixel/s
FLOPS (Floating-point Performance) 21.57 TFLOPS 2.7 TFLOPS
GPU Memory Speed 2000MHz 1527MHz
Texture Filter Rate 673.9 GTexels/s 113 GTexels/s
Total GPU Shading Units 4608 1344
Total GPU TMUs 288 112
GPU Boost Clock Speed 2340MHz 1084MHz
GPU Render Output Units (ROPs) 128 24
DPFP (Double Precision Floating Point) Support No No
Features Features PowerColor Red Devil Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
DirectX Version Info 12 11
OpenGL Driver Version 4.6 4.3
OpenCL Driver Version 2.1 1.1
Multi-display Tech Support Yes Yes
3D Support Yes Yes
Ray Tracing Support Yes No
No. of Supported Displays 4 4
PassMark (G3D) Score Not Known 4692
3DMark Vantage Texture Fill Result Not Known 86.4GTexels/s
GPU Temperature Under Load Not Known 75°C
3DMark Vantage Pixel Fill Result Not Known 10.4GPixel/s
PassMark (DirectCompute) Benchmark Result Not Known 2547
Idle GPU Temperature Not Known 31°C
Noise Level Under Load Not Known 47.9dB
Power Consumption Under Peak Load Not Known 318W
Idle Power Consumption Not Known 111W
Idle Noise Level Not Known 41.8dB
Multi-GPU Support Count Not Known 3
SmallLuxGPU (2.0d4) Result Not Known 6200
Ports Ports PowerColor Red Devil Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
HDMI Output Support Yes Yes
GPU HDMI Version 2.1 Not Known
DisplayPort Output 3 1
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 2
Mini DisplayPort Output 0 0
General info General info PowerColor Red Devil Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 26800 million 3540 million
Semiconductor Size 7nm 28nm
PCI Express Version 4 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 320mm 247mm
Height 135mm 111mm
Memory Memory PowerColor Red Devil Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
Effective Memory Clock 16000MHz 6108MHz
Max Memory Bandwidth 512GB/s 147GB/s
RAM 16GB 2GB
Memory Bus Interface Width 256bit 192bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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