Zotac GTX 1080 Ti vs EVGA GeForce GTX 640 4GB

VS
Zotac GTX 1080 Ti
Zotac GTX 1080 Ti Image
EVGA GeForce GTX 640 4GB
EVGA GeForce GTX 640 4GB Image
Zotac GTX 1080 Ti
EVGA GeForce GTX 640 4GB
Key Differences Key Differences Zotac GTX 1080 Ti EVGA GeForce GTX 640 4GB
GPU Base Clock Speed 1481MHz 900MHz
GPU Boost Clock Speed 1582MHz Not Known
Pixel Rate 139.2 GPixel/s 7.22 GPixel/s
GPU Memory Speed 1376MHz 901MHz
GPU Render Output Units (ROPs) 88 16
No. of Supported Displays Not Known Not Known
Performance Performance Zotac GTX 1080 Ti EVGA GeForce GTX 640 4GB
GPU Base Clock Speed 1481MHz 900MHz
Pixel Rate 139.2 GPixel/s 7.22 GPixel/s
FLOPS (Floating-point Performance) 11.34 TFLOPS 0.69 TFLOPS
Texture Filter Rate 354.4 GTexels/s 28.8 GTexels/s
GPU Memory Speed 1376MHz 901MHz
Total GPU Shading Units 3584 384
Total GPU TMUs 224 32
GPU Boost Clock Speed 1582MHz Not Known
GPU Render Output Units (ROPs) 88 16
DPFP (Double Precision Floating Point) Support No No
Features Features Zotac GTX 1080 Ti EVGA GeForce GTX 640 4GB
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 644
GPU Temperature Under Load 84°C Not Known
PassMark (DirectCompute) Benchmark Result 9456 1297
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
Ports Ports Zotac GTX 1080 Ti EVGA GeForce GTX 640 4GB
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 0 2
Mini DisplayPort Output 0 0
General info General info Zotac GTX 1080 Ti EVGA GeForce GTX 640 4GB
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 266.7mm 170mm
Height 111.6mm 111mm
Air-water Cooling Support No No
Memory Memory Zotac GTX 1080 Ti EVGA GeForce GTX 640 4GB
Effective Memory Clock 11008MHz 1802MHz
Max Memory Bandwidth 484.4GB/s 28.8GB/s
RAM 11GB 4GB
Memory Bus Interface Width 352bit 128bit
GDDR Memory Version 5 Not Known
ECC (Error-Correcting Code) Memory Support No No

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