Gainward GeForce RTX 3080 Phantom vs Gainward GeForce GTX 660

VS
Gainward GeForce RTX 3080 Phantom
Gainward GeForce RTX 3080 Phantom Image
Gainward GeForce GTX 660
Gainward GeForce GTX 660 Image
Gainward GeForce RTX 3080 Phantom
Gainward GeForce GTX 660
Key Differences Key Differences Gainward GeForce RTX 3080 Phantom Gainward GeForce GTX 660
GPU Base Clock Speed 1440MHz 980MHz
GPU Boost Clock Speed 1755MHz 1032MHz
Pixel Rate 168.5 GPixel/s 19.6 GPixel/s
GPU Memory Speed 1188MHz 1502MHz
GPU Render Output Units (ROPs) 96 24
No. of Supported Displays Not Known 4
Performance Performance Gainward GeForce RTX 3080 Phantom Gainward GeForce GTX 660
GPU Base Clock Speed 1440MHz 980MHz
Pixel Rate 168.5 GPixel/s 19.6 GPixel/s
FLOPS (Floating-point Performance) 30.55 TFLOPS 1.88 TFLOPS
GPU Memory Speed 1188MHz 1502MHz
Texture Filter Rate 477.4 GTexels/s 78.4 GTexels/s
Total GPU Shading Units 8704 960
Total GPU TMUs 272 80
GPU Boost Clock Speed 1755MHz 1032MHz
GPU Render Output Units (ROPs) 96 24
DPFP (Double Precision Floating Point) Support No No
Features Features Gainward GeForce RTX 3080 Phantom Gainward GeForce GTX 660
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 4104
3DMark Vantage Texture Fill Result Not Known 65.3GTexels/s
GPU Temperature Under Load Not Known 72°C
3DMark Vantage Pixel Fill Result Not Known 9.9GPixel/s
PassMark (DirectCompute) Benchmark Result Not Known 1933
Idle GPU Temperature Not Known 30°C
Noise Level Under Load Not Known 47.4dB
Power Consumption Under Peak Load Not Known 296W
Idle Power Consumption Not Known 110W
Idle Noise Level Not Known 40.8dB
SmallLuxGPU (2.0d4) Result Not Known 5000
No. of Supported Displays Not Known 4
Ports Ports Gainward GeForce RTX 3080 Phantom Gainward GeForce GTX 660
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 Gainward GeForce RTX 3080 Phantom Gainward GeForce GTX 660
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 28300 million 2540 million
Semiconductor Size 8nm 28nm
PCI Express Version 4 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 304mm 180mm
Height 136mm 111mm
Memory Memory Gainward GeForce RTX 3080 Phantom Gainward GeForce GTX 660
Effective Memory Clock 19000MHz 6008MHz
Max Memory Bandwidth 760GB/s 144GB/s
RAM 10GB 2GB
Memory Bus Interface Width 320bit 192bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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