Zotac GeForce RTX 2080 Super Twin Fan vs Nvidia GeForce GT 640 OEM GDDR5 1GB

VS
Zotac GeForce RTX 2080 Super Twin Fan
Zotac GeForce RTX 2080 Super Twin Fan Image
Nvidia GeForce GT 640 OEM GDDR5 1GB
Nvidia GeForce GT 640 OEM GDDR5 1GB Image
Zotac GeForce RTX 2080 Super Twin Fan
Nvidia GeForce GT 640 OEM GDDR5 1GB
Key Differences Key Differences Zotac GeForce RTX 2080 Super Twin Fan Nvidia GeForce GT 640 OEM GDDR5 1GB
GPU Base Clock Speed 1650MHz 950MHz
GPU Boost Clock Speed 1815MHz Not Known
Pixel Rate 116.2 GPixel/s 7.63 GPixel/s
GPU Memory Speed 1937MHz 1250MHz
GPU Render Output Units (ROPs) 64 Not Known
No. of Supported Displays 4 Not Known
Performance Performance Zotac GeForce RTX 2080 Super Twin Fan Nvidia GeForce GT 640 OEM GDDR5 1GB
GPU Base Clock Speed 1650MHz 950MHz
Pixel Rate 116.2 GPixel/s 7.63 GPixel/s
FLOPS (Floating-point Performance) 11.15 TFLOPS 0.73 TFLOPS
GPU Memory Speed 1937MHz 1250MHz
Texture Filter Rate 348.5 GTexels/s 30.4 GTexels/s
Total GPU Shading Units 3072 384
Total GPU TMUs 192 Not Known
GPU Boost Clock Speed 1815MHz Not Known
GPU Render Output Units (ROPs) 64 Not Known
DPFP (Double Precision Floating Point) Support No No
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Features Features Zotac GeForce RTX 2080 Super Twin Fan Nvidia GeForce GT 640 OEM GDDR5 1GB
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 1.2 Not Known
Multi-display Tech Support Yes No
GPU Temperature Under Load 77°C Not Known
Idle GPU Temperature 30°C Not Known
Noise Level Under Load 46.5dB Not Known
3D Support Yes Yes
Idle Power Consumption 54W Not Known
Idle Noise Level 40.3dB Not Known
Multi-GPU Support Count 2 Not Known
No. of Supported Displays 4 Not Known
PassMark (G3D) Score Not Known 644
PassMark (DirectCompute) Benchmark Result Not Known 1297
Ray Tracing Support No No
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Ports Ports Zotac GeForce RTX 2080 Super Twin Fan Nvidia GeForce GT 640 OEM GDDR5 1GB
HDMI Output Support Yes Yes
GPU HDMI Version 2 Not Known
DisplayPort Output 3 1
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 0
Mini DisplayPort Output 0 0
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General info General info Zotac GeForce RTX 2080 Super Twin Fan Nvidia GeForce GT 640 OEM GDDR5 1GB
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 13600 million 1270 million
Semiconductor Size 12nm 28nm
PCI Express Version 3 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 268mm 145mm
Height 113mm 111mm
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Memory Memory Zotac GeForce RTX 2080 Super Twin Fan Nvidia GeForce GT 640 OEM GDDR5 1GB
Effective Memory Clock 15496MHz 5000MHz
Max Memory Bandwidth 496GB/s 80GB/s
RAM 8GB 1GB
Memory Bus Interface Width 256bit 128bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No
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