Gainward GeForce RTX 3080 Phantom GS vs Nvidia GeForce GT 640 GDDR5

VS
Gainward GeForce RTX 3080 Phantom GS
Gainward GeForce RTX 3080 Phantom GS Image
Nvidia GeForce GT 640 GDDR5
Nvidia GeForce GT 640 GDDR5 Image
Gainward GeForce RTX 3080 Phantom GS
Nvidia GeForce GT 640 GDDR5
Key Differences Key Differences Gainward GeForce RTX 3080 Phantom GS Nvidia GeForce GT 640 GDDR5
GPU Base Clock Speed 1440MHz 1046MHz
GPU Boost Clock Speed 1830MHz Not Known
Pixel Rate 175.7 GPixel/s 8.37 GPixel/s
GPU Memory Speed 1188MHz 1252MHz
GPU Render Output Units (ROPs) 96 8
No. of Supported Displays Not Known Not Known
Performance Performance Gainward GeForce RTX 3080 Phantom GS Nvidia GeForce GT 640 GDDR5
GPU Base Clock Speed 1440MHz 1046MHz
Pixel Rate 175.7 GPixel/s 8.37 GPixel/s
FLOPS (Floating-point Performance) 31.86 TFLOPS 0.8 TFLOPS
GPU Memory Speed 1188MHz 1252MHz
Texture Filter Rate 497.8 GTexels/s 16.7 GTexels/s
Total GPU Shading Units 8704 384
Total GPU TMUs 272 16
GPU Boost Clock Speed 1830MHz Not Known
GPU Render Output Units (ROPs) 96 8
DPFP (Double Precision Floating Point) Support No No
Features Features Gainward GeForce RTX 3080 Phantom GS Nvidia GeForce GT 640 GDDR5
DirectX Version Info 12 11.1
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 644
PassMark (DirectCompute) Benchmark Result Not Known 1297
Ports Ports Gainward GeForce RTX 3080 Phantom GS Nvidia GeForce GT 640 GDDR5
HDMI Output Support Yes Yes
GPU HDMI Version 2.1 Not Known
DisplayPort Output 3 0
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 1
Mini DisplayPort Output 0 0
General info General info Gainward GeForce RTX 3080 Phantom GS Nvidia GeForce GT 640 GDDR5
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 28300 million 1270 million
Semiconductor Size 8nm 28nm
PCI Express Version 4 2
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 304mm 145mm
Height 136mm 111mm
Memory Memory Gainward GeForce RTX 3080 Phantom GS Nvidia GeForce GT 640 GDDR5
Effective Memory Clock 19000MHz 5008MHz
Max Memory Bandwidth 760GB/s 40GB/s
RAM 10GB 1GB
Memory Bus Interface Width 320bit 64bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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