Gigabyte GeForce RTX 2080 Ti WindForce OC vs Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB

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Gigabyte GeForce RTX 2080 Ti WindForce OC
Gigabyte GeForce RTX 2080 Ti WindForce OC Image
Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB
Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB Image
Gigabyte GeForce RTX 2080 Ti WindForce OC
Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB
Key Differences Key Differences Gigabyte GeForce RTX 2080 Ti WindForce OC Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB
GPU Base Clock Speed 1350MHz 797MHz
GPU Boost Clock Speed 1620MHz Not Known
Pixel Rate 142.6 GPixel/s 6.38 GPixel/s
GPU Memory Speed 1750MHz 891MHz
GPU Render Output Units (ROPs) 88 16
No. of Supported Displays 4 Not Known
Performance Performance Gigabyte GeForce RTX 2080 Ti WindForce OC Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB
GPU Base Clock Speed 1350MHz 797MHz
Pixel Rate 142.6 GPixel/s 6.38 GPixel/s
FLOPS (Floating-point Performance) 14.1 TFLOPS 0.61 TFLOPS
GPU Memory Speed 1750MHz 891MHz
Texture Filter Rate 440.6 GTexels/s 25.5 GTexels/s
Total GPU Shading Units 4352 384
Total GPU TMUs 272 32
GPU Boost Clock Speed 1620MHz Not Known
GPU Render Output Units (ROPs) 88 16
DPFP (Double Precision Floating Point) Support No No
Features Features Gigabyte GeForce RTX 2080 Ti WindForce OC Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 2 Not Known
Multi-display Tech Support Yes No
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 Gigabyte GeForce RTX 2080 Ti WindForce OC Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports Gigabyte GeForce RTX 2080 Ti WindForce OC Nvidia GeForce GT 640 OEM 128-bit DDR3 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
General info General info Gigabyte GeForce RTX 2080 Ti WindForce OC Nvidia GeForce GT 640 OEM 128-bit DDR3 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 280.35mm 145mm
Height 116.45mm 111mm
Memory Memory Gigabyte GeForce RTX 2080 Ti WindForce OC Nvidia GeForce GT 640 OEM 128-bit DDR3 2GB
Effective Memory Clock 14000MHz 1782MHz
Max Memory Bandwidth 616GB/s 28.5GB/s
RAM 11GB 2GB
Memory Bus Interface Width 352bit 128bit
GDDR Memory Version 6 Not Known
ECC (Error-Correcting Code) Memory Support No No

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