Zotac GeForce GTX 1080 Ti AMP! Extreme vs Zotac GeForce GT 640 2GB

VS
Zotac GeForce GTX 1080 Ti AMP! Extreme
Zotac GeForce GTX 1080 Ti AMP! Extreme Image
Zotac GeForce GT 640 2GB
Zotac GeForce GT 640 2GB Image
Zotac GeForce GTX 1080 Ti AMP! Extreme
Zotac GeForce GT 640 2GB
Key Differences Key Differences Zotac GeForce GTX 1080 Ti AMP! Extreme Zotac GeForce GT 640 2GB
GPU Base Clock Speed 1645MHz 1046MHz
GPU Boost Clock Speed 1759MHz Not Known
Pixel Rate 154.8 GPixel/s 7.22 GPixel/s
GPU Memory Speed 1400MHz 1250MHz
GPU Render Output Units (ROPs) 88 16
No. of Supported Displays 4 Not Known
Performance Performance Zotac GeForce GTX 1080 Ti AMP! Extreme Zotac GeForce GT 640 2GB
GPU Base Clock Speed 1645MHz 1046MHz
Pixel Rate 154.8 GPixel/s 7.22 GPixel/s
FLOPS (Floating-point Performance) 12.61 TFLOPS 0.69 TFLOPS
Texture Filter Rate 394 GTexels/s 28.8 GTexels/s
GPU Memory Speed 1400MHz 1250MHz
Total GPU Shading Units 3584 384
Total GPU TMUs 224 32
GPU Boost Clock Speed 1759MHz Not Known
GPU Render Output Units (ROPs) 88 16
DPFP (Double Precision Floating Point) Support No No
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Features Features Zotac GeForce GTX 1080 Ti AMP! Extreme Zotac GeForce GT 640 2GB
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 1.2 1.1
Multi-display Tech Support Yes Yes
PassMark (G3D) Score 13470 Not Known
GPU Temperature Under Load 84°C Not Known
PassMark (DirectCompute) Benchmark Result 9456 Not Known
Idle GPU Temperature 33°C Not Known
3D Support Yes Yes
Noise Level Under Load 55.4dB Not Known
Idle Noise Level 40.7dB Not Known
Idle Power Consumption 82W Not Known
Ray Tracing Support Yes No
Multi-GPU Support Count 2 Not Known
No. of Supported Displays 4 Not Known
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Ports Ports Zotac GeForce GTX 1080 Ti AMP! Extreme Zotac GeForce GT 640 2GB
HDMI Output Support Yes Yes
GPU HDMI Version 2 Not Known
DisplayPort Output 3 0
No. of HDMI Ports 1 Not Known
DVI Output Ports 1 1
Mini DisplayPort Output 0 0
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General info General info Zotac GeForce GTX 1080 Ti AMP! Extreme Zotac GeForce GT 640 2GB
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 12000 million 1270 million
Semiconductor Size 16nm 28nm
PCI Express Version 3 3
Dual-GPU Support No No
Width Size 325mm 145mm
Height 148mm 111mm
Air-water Cooling Support No No
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Memory Memory Zotac GeForce GTX 1080 Ti AMP! Extreme Zotac GeForce GT 640 2GB
Effective Memory Clock 11200MHz 5000MHz
Max Memory Bandwidth 492.8GB/s 28.5GB/s
RAM 11GB 2GB
Memory Bus Interface Width 352bit 128bit
GDDR Memory Version 5 5
ECC (Error-Correcting Code) Memory Support No No
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