AMD Radeon RX 6800 XT vs Gainward GeForce GTX 660 Ti Phantom

VS
AMD Radeon RX 6800 XT
AMD Radeon RX 6800 XT Image
Gainward GeForce GTX 660 Ti Phantom
Gainward GeForce GTX 660 Ti Phantom Image
AMD Radeon RX 6800 XT
Gainward GeForce GTX 660 Ti Phantom
Key Differences Key Differences AMD Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
GPU Base Clock Speed 1487MHz 1006MHz
GPU Boost Clock Speed 2250MHz 1084MHz
Pixel Rate 288 GPixel/s 28.2 GPixel/s
GPU Memory Speed 2000MHz 1527MHz
GPU Render Output Units (ROPs) 128 24
No. of Supported Displays Not Known 4
Performance Performance AMD Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
GPU Base Clock Speed 1487MHz 1006MHz
Pixel Rate 288 GPixel/s 28.2 GPixel/s
FLOPS (Floating-point Performance) 20.74 TFLOPS 2.7 TFLOPS
Texture Filter Rate 648 GTexels/s 113 GTexels/s
GPU Memory Speed 2000MHz 1527MHz
Total GPU Shading Units 4608 1344
Total GPU TMUs 288 112
GPU Boost Clock Speed 2250MHz 1084MHz
GPU Render Output Units (ROPs) 128 24
DPFP (Double Precision Floating Point) Support No No
Features Features AMD 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
Multi-display Tech Support Yes Yes
3D Support Yes Yes
Ray Tracing Support Yes No
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
No. of Supported Displays Not Known 4
SmallLuxGPU (2.0d4) Result Not Known 6200
Miscellaneous Miscellaneous AMD Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports AMD Radeon RX 6800 XT Gainward GeForce GTX 660 Ti Phantom
HDMI Output Support Yes Yes
GPU HDMI Version 2.1 Not Known
DisplayPort Output 2 1
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 2
Mini DisplayPort Output 0 0
General info General info AMD 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 267mm 247mm
Height 120mm 111mm
Memory Memory AMD 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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