Zotac GeForce GTX 1080 Ti ArcticStorm vs Nvidia GeForce GTX 645 OEM

VS
Zotac GeForce GTX 1080 Ti ArcticStorm
Zotac GeForce GTX 1080 Ti ArcticStorm Image
Nvidia GeForce GTX 645 OEM
Nvidia GeForce GTX 645 OEM Image
Zotac GeForce GTX 1080 Ti ArcticStorm
Nvidia GeForce GTX 645 OEM
Key Differences Key Differences Zotac GeForce GTX 1080 Ti ArcticStorm Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1506MHz 823MHz
GPU Boost Clock Speed 1620MHz 888MHz
Pixel Rate 142.6 GPixel/s 9.88 GPixel/s
GPU Memory Speed 1376MHz 1000MHz
GPU Render Output Units (ROPs) 88 16
No. of Supported Displays 4 4
Performance Performance Zotac GeForce GTX 1080 Ti ArcticStorm Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1506MHz 823MHz
Pixel Rate 142.6 GPixel/s 9.88 GPixel/s
FLOPS (Floating-point Performance) 11.61 TFLOPS 0.95 TFLOPS
GPU Memory Speed 1376MHz 1000MHz
Texture Filter Rate 362.9 GTexels/s 39.5 GTexels/s
Total GPU Shading Units 3584 576
Total GPU TMUs 224 48
GPU Boost Clock Speed 1620MHz 888MHz
GPU Render Output Units (ROPs) 88 16
DPFP (Double Precision Floating Point) Support No No
Features Features Zotac GeForce GTX 1080 Ti ArcticStorm Nvidia GeForce GTX 645 OEM
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 1977
GPU Temperature Under Load 84°C Not Known
PassMark (DirectCompute) Benchmark Result 9456 943
Idle GPU Temperature 33°C Not Known
3D Support Yes Yes
Noise Level Under Load 55.4dB Not Known
Idle Power Consumption 82W Not Known
Idle Noise Level 40.7dB Not Known
Ray Tracing Support Yes No
Multi-GPU Support Count 2 Not Known
No. of Supported Displays 4 4
Ports Ports Zotac GeForce GTX 1080 Ti ArcticStorm Nvidia GeForce GTX 645 OEM
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 1 2
Mini DisplayPort Output 0 0
General info General info Zotac GeForce GTX 1080 Ti ArcticStorm Nvidia GeForce GTX 645 OEM
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 12000 million 2540 million
Semiconductor Size 16nm 28nm
PCI Express Version 3 3
Dual-GPU Support No No
Air-water Cooling Support Yes No
Width Size 300mm 145mm
Height 148mm 111mm
Memory Memory Zotac GeForce GTX 1080 Ti ArcticStorm Nvidia GeForce GTX 645 OEM
Effective Memory Clock 11008MHz 4000MHz
Max Memory Bandwidth 484.4GB/s 64GB/s
RAM 11GB 1GB
Memory Bus Interface Width 352bit 128bit
GDDR Memory Version 5 5
ECC (Error-Correcting Code) Memory Support No No

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