Gainward GeForce RTX 3090 Phantom GS vs Nvidia GeForce GTX 660 OEM

VS
Gainward GeForce RTX 3090 Phantom GS
Gainward GeForce RTX 3090 Phantom GS Image
Nvidia GeForce GTX 660 OEM
Nvidia GeForce GTX 660 OEM Image
Gainward GeForce RTX 3090 Phantom GS
Nvidia GeForce GTX 660 OEM
Key Differences Key Differences Gainward GeForce RTX 3090 Phantom GS Nvidia GeForce GTX 660 OEM
GPU Base Clock Speed 1395MHz 823MHz
GPU Boost Clock Speed 1845MHz 888MHz
Pixel Rate 206.6 GPixel/s 19.8 GPixel/s
GPU Memory Speed 1219MHz Not Known
GPU Render Output Units (ROPs) 112 32
No. of Supported Displays Not Known 4
Performance Performance Gainward GeForce RTX 3090 Phantom GS Nvidia GeForce GTX 660 OEM
GPU Base Clock Speed 1395MHz 823MHz
Pixel Rate 206.6 GPixel/s 19.8 GPixel/s
FLOPS (Floating-point Performance) 38.73 TFLOPS 1.9 TFLOPS
GPU Memory Speed 1219MHz Not Known
Texture Filter Rate 605.2 GTexels/s 79 GTexels/s
Total GPU Shading Units 10496 1152
Total GPU TMUs 328 98
GPU Boost Clock Speed 1845MHz 888MHz
GPU Render Output Units (ROPs) 112 32
DPFP (Double Precision Floating Point) Support No No
Features Features Gainward GeForce RTX 3090 Phantom GS Nvidia GeForce GTX 660 OEM
DirectX Version Info 12 11
OpenGL Driver Version 4.6 4.3
OpenCL Driver Version 2 1.1
Multi-display Tech Support Yes No
3D Support Yes Yes
Ray Tracing Support Yes No
No. of Supported Displays Not Known 4
Ports Ports Gainward GeForce RTX 3090 Phantom GS Nvidia GeForce GTX 660 OEM
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 Not Known
General info General info Gainward GeForce RTX 3090 Phantom GS Nvidia GeForce GTX 660 OEM
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 28300 million 3540 million
Semiconductor Size 8nm 28nm
PCI Express Version 4 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 304mm 241mm
Height 136mm 111mm
Memory Memory Gainward GeForce RTX 3090 Phantom GS Nvidia GeForce GTX 660 OEM
Effective Memory Clock 9750MHz 5600MHz
Max Memory Bandwidth 936GB/s 179GB/s
RAM 24GB 2GB
Memory Bus Interface Width 384bit 256bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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