Gainward GeForce RTX 3080 Phantom vs Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB

VS
Gainward GeForce RTX 3080 Phantom
Gainward GeForce RTX 3080 Phantom Image
Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB Image
Gainward GeForce RTX 3080 Phantom
Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
Key Differences Key Differences Gainward GeForce RTX 3080 Phantom Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
GPU Base Clock Speed 1440MHz 720MHz
GPU Boost Clock Speed 1755MHz Not Known
Pixel Rate 168.5 GPixel/s 6.38 GPixel/s
GPU Memory Speed 1188MHz 891MHz
GPU Render Output Units (ROPs) 96 Not Known
No. of Supported Displays Not Known Not Known
Performance Performance Gainward GeForce RTX 3080 Phantom Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
GPU Base Clock Speed 1440MHz 720MHz
Pixel Rate 168.5 GPixel/s 6.38 GPixel/s
FLOPS (Floating-point Performance) 30.55 TFLOPS 0.61 TFLOPS
GPU Memory Speed 1188MHz 891MHz
Texture Filter Rate 477.4 GTexels/s 17 GTexels/s
Total GPU Shading Units 8704 144
Total GPU TMUs 272 Not Known
GPU Boost Clock Speed 1755MHz Not Known
GPU Render Output Units (ROPs) 96 Not Known
DPFP (Double Precision Floating Point) Support No No
Features Features Gainward GeForce RTX 3080 Phantom Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
DirectX Version Info 12 11
OpenGL Driver Version 4.6 4.3
OpenCL Driver Version 2 Not Known
Multi-display Tech Support Yes No
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 Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
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 Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
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 Nvidia GeForce GT 640 OEM 192-bit DDR3 1.5GB
Effective Memory Clock 19000MHz 1782MHz
Max Memory Bandwidth 760GB/s 43GB/s
RAM 10GB 2GB
Memory Bus Interface Width 320bit 192bit
GDDR Memory Version 6 Not Known
ECC (Error-Correcting Code) Memory Support No No

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