Asus GeForce Dual RTX 2080 Ti OC vs Zotac GeForce GT 640 2GB

VS
Asus GeForce Dual RTX 2080 Ti OC
Asus GeForce Dual RTX 2080 Ti OC Image
Zotac GeForce GT 640 2GB
Zotac GeForce GT 640 2GB Image
Asus GeForce Dual RTX 2080 Ti OC
Zotac GeForce GT 640 2GB
Key Differences Key Differences Asus GeForce Dual RTX 2080 Ti OC Zotac GeForce GT 640 2GB
GPU Base Clock Speed 1350MHz 1046MHz
GPU Boost Clock Speed 1635MHz Not Known
Pixel Rate 143.9 GPixel/s 7.22 GPixel/s
GPU Memory Speed 1750MHz 1250MHz
GPU Render Output Units (ROPs) 88 16
No. of Supported Displays 4 Not Known
Performance Performance Asus GeForce Dual RTX 2080 Ti OC Zotac GeForce GT 640 2GB
GPU Base Clock Speed 1350MHz 1046MHz
Pixel Rate 143.9 GPixel/s 7.22 GPixel/s
FLOPS (Floating-point Performance) 14.23 TFLOPS 0.69 TFLOPS
GPU Memory Speed 1750MHz 1250MHz
Texture Filter Rate 444.7 GTexels/s 28.8 GTexels/s
Total GPU Shading Units 4352 384
Total GPU TMUs 272 32
GPU Boost Clock Speed 1635MHz Not Known
GPU Render Output Units (ROPs) 88 16
DPFP (Double Precision Floating Point) Support No No
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Features Features Asus GeForce Dual RTX 2080 Ti OC Zotac GeForce GT 640 2GB
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 2 1.1
Multi-display Tech Support Yes Yes
3D Support Yes Yes
Multi-GPU Support Count 2 Not Known
No. of Supported Displays 4 Not Known
Ray Tracing Support No No
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Miscellaneous Miscellaneous Asus GeForce Dual RTX 2080 Ti OC Zotac GeForce GT 640 2GB
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports Asus GeForce Dual RTX 2080 Ti OC 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 0 1
Mini DisplayPort Output 0 0
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General info General info Asus GeForce Dual RTX 2080 Ti OC Zotac GeForce GT 640 2GB
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 18600 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 114mm 111mm
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Memory Memory Asus GeForce Dual RTX 2080 Ti OC Zotac GeForce GT 640 2GB
Effective Memory Clock 14000MHz 5000MHz
Max Memory Bandwidth 616GB/s 28.5GB/s
RAM 11GB 2GB
Memory Bus Interface Width 352bit 128bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No
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