KFA2 GeForce RTX 2080 Ti OC vs Nvidia GeForce GT 640 GDDR5

VS
KFA2 GeForce RTX 2080 Ti OC
KFA2 GeForce RTX 2080 Ti OC Image
Nvidia GeForce GT 640 GDDR5
Nvidia GeForce GT 640 GDDR5 Image
KFA2 GeForce RTX 2080 Ti OC
Nvidia GeForce GT 640 GDDR5
Key Differences Key Differences KFA2 GeForce RTX 2080 Ti OC Nvidia GeForce GT 640 GDDR5
GPU Base Clock Speed 1350MHz 1046MHz
GPU Boost Clock Speed 1620MHz Not Known
Pixel Rate 142.6 GPixel/s 8.37 GPixel/s
GPU Memory Speed 1750MHz 1252MHz
GPU Render Output Units (ROPs) 88 8
No. of Supported Displays 4 Not Known
Performance Performance KFA2 GeForce RTX 2080 Ti OC Nvidia GeForce GT 640 GDDR5
GPU Base Clock Speed 1350MHz 1046MHz
Pixel Rate 142.6 GPixel/s 8.37 GPixel/s
FLOPS (Floating-point Performance) 14.1 TFLOPS 0.8 TFLOPS
GPU Memory Speed 1750MHz 1252MHz
Texture Filter Rate 440.6 GTexels/s 16.7 GTexels/s
Total GPU Shading Units 4352 384
Total GPU TMUs 272 16
GPU Boost Clock Speed 1620MHz Not Known
GPU Render Output Units (ROPs) 88 8
DPFP (Double Precision Floating Point) Support No No
Features Features KFA2 GeForce RTX 2080 Ti OC Nvidia GeForce GT 640 GDDR5
DirectX Version Info 12 11.1
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
PassMark (G3D) Score Not Known 644
PassMark (DirectCompute) Benchmark Result Not Known 1297
Ray Tracing Support No No
Miscellaneous Miscellaneous KFA2 GeForce RTX 2080 Ti OC Nvidia GeForce GT 640 GDDR5
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports KFA2 GeForce RTX 2080 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 0 1
Mini DisplayPort Output 0 0
General info General info KFA2 GeForce RTX 2080 Ti OC Nvidia GeForce GT 640 GDDR5
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 18600 million 1270 million
Semiconductor Size 12nm 28nm
PCI Express Version 3 2
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 283mm 145mm
Height 139mm 111mm
Memory Memory KFA2 GeForce RTX 2080 Ti OC Nvidia GeForce GT 640 GDDR5
Effective Memory Clock 14000MHz 5008MHz
Max Memory Bandwidth 616GB/s 40GB/s
RAM 11GB 1GB
Memory Bus Interface Width 352bit 64bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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