Galax GeForce RTX 2080 Ti SG Edition vs Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB

VS
Galax GeForce RTX 2080 Ti SG Edition
Galax GeForce RTX 2080 Ti SG Edition Image
Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB Image
Galax GeForce RTX 2080 Ti SG Edition
Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
Key Differences Key Differences Galax GeForce RTX 2080 Ti SG Edition Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
GPU Base Clock Speed 1350MHz 797MHz
GPU Boost Clock Speed 1635MHz Not Known
Pixel Rate 147.8 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 Galax GeForce RTX 2080 Ti SG Edition Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
GPU Base Clock Speed 1350MHz 797MHz
Pixel Rate 147.8 GPixel/s 6.38 GPixel/s
FLOPS (Floating-point Performance) 14.62 TFLOPS 0.73 TFLOPS
Texture Filter Rate 457 GTexels/s 25.5 GTexels/s
GPU Memory Speed 1750MHz 891MHz
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
Features Features Galax GeForce RTX 2080 Ti SG Edition Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 2 Not Known
Multi-display Tech Support Yes No
GPU Temperature Under Load 77°C Not Known
Idle GPU Temperature 31°C Not Known
Noise Level Under Load 47.5dB Not Known
3D Support Yes Yes
Idle Noise Level 41.5dB Not Known
Idle Power Consumption 54W Not Known
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 Galax GeForce RTX 2080 Ti SG Edition Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports Galax GeForce RTX 2080 Ti SG Edition Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
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 Galax GeForce RTX 2080 Ti SG Edition Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
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 320mm 145mm
Height 110mm 111mm
Memory Memory Galax GeForce RTX 2080 Ti SG Edition Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
Effective Memory Clock 14000MHz 1782MHz
Max Memory Bandwidth 616GB/s 28.5GB/s
RAM 11GB 1GB
Memory Bus Interface Width 352bit 128bit
GDDR Memory Version 6 Not Known
ECC (Error-Correcting Code) Memory Support No No

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