Asus ROG Strix GeForce GTX 1080 Ti OC vs Nvidia GeForce GT 640 GDDR5

VS
Asus ROG Strix GeForce GTX 1080 Ti OC
Asus ROG Strix GeForce GTX 1080 Ti OC Image
Nvidia GeForce GT 640 GDDR5
Nvidia GeForce GT 640 GDDR5 Image
Asus ROG Strix GeForce GTX 1080 Ti OC
Nvidia GeForce GT 640 GDDR5
Key Differences Key Differences Asus ROG Strix GeForce GTX 1080 Ti OC Nvidia GeForce GT 640 GDDR5
GPU Base Clock Speed 1569MHz 1046MHz
GPU Boost Clock Speed 1683MHz Not Known
Pixel Rate 138.2 GPixel/s 8.37 GPixel/s
GPU Memory Speed 1376MHz 1252MHz
GPU Render Output Units (ROPs) 88 8
No. of Supported Displays 5 Not Known
Performance Performance Asus ROG Strix GeForce GTX 1080 Ti OC Nvidia GeForce GT 640 GDDR5
GPU Base Clock Speed 1569MHz 1046MHz
Pixel Rate 138.2 GPixel/s 8.37 GPixel/s
FLOPS (Floating-point Performance) 11.3 TFLOPS 0.8 TFLOPS
Texture Filter Rate 352 GTexels/s 16.7 GTexels/s
GPU Memory Speed 1376MHz 1252MHz
Total GPU Shading Units 3584 384
Total GPU TMUs 224 16
GPU Boost Clock Speed 1683MHz Not Known
GPU Render Output Units (ROPs) 88 8
DPFP (Double Precision Floating Point) Support Yes No
Features Features Asus ROG Strix GeForce GTX 1080 Ti OC Nvidia GeForce GT 640 GDDR5
DirectX Version Info 12 11.1
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 1.2 1.1
3D Support Yes Yes
Multi-GPU Support Count 2 Not Known
Ray Tracing Support Yes No
No. of Supported Displays 5 Not Known
Multi-display Tech Support No Yes
PassMark (G3D) Score Not Known 644
PassMark (DirectCompute) Benchmark Result Not Known 1297
Ports Ports Asus ROG Strix GeForce GTX 1080 Ti OC Nvidia GeForce GT 640 GDDR5
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
General info General info Asus ROG Strix GeForce GTX 1080 Ti OC Nvidia GeForce GT 640 GDDR5
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 12000 million 1270 million
Semiconductor Size 16nm 28nm
PCI Express Version 3 2
Air-water Cooling Support No No
Width Size 297.9mm 145mm
Height 134.1mm 111mm
Dual-GPU Support No No
Memory Memory Asus ROG Strix GeForce GTX 1080 Ti OC Nvidia GeForce GT 640 GDDR5
Effective Memory Clock 11010MHz 5008MHz
Max Memory Bandwidth 484GB/s 40GB/s
RAM 11GB 1GB
Memory Bus Interface Width 352bit 64bit
GDDR Memory Version 5 5
ECC (Error-Correcting Code) Memory Support No No

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