KFA2 GeForce RTX 2080 vs Nvidia GeForce GTX 645 OEM

VS
KFA2 GeForce RTX 2080
KFA2 GeForce RTX 2080 Image
Nvidia GeForce GTX 645 OEM
Nvidia GeForce GTX 645 OEM Image
KFA2 GeForce RTX 2080
Nvidia GeForce GTX 645 OEM
Key Differences Key Differences KFA2 GeForce RTX 2080 Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1515MHz 823MHz
GPU Boost Clock Speed 1710MHz 888MHz
Pixel Rate 109.4 GPixel/s 9.88 GPixel/s
GPU Memory Speed 1750MHz 1000MHz
GPU Render Output Units (ROPs) 64 16
No. of Supported Displays Not Known 4
Performance Performance KFA2 GeForce RTX 2080 Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1515MHz 823MHz
Pixel Rate 109.4 GPixel/s 9.88 GPixel/s
FLOPS (Floating-point Performance) 10.07 TFLOPS 0.95 TFLOPS
Texture Filter Rate 314.6 GTexels/s 39.5 GTexels/s
GPU Memory Speed 1750MHz 1000MHz
Total GPU Shading Units 2944 576
Total GPU TMUs 184 48
GPU Boost Clock Speed 1710MHz 888MHz
GPU Render Output Units (ROPs) 64 16
DPFP (Double Precision Floating Point) Support No No
Features Features KFA2 GeForce RTX 2080 Nvidia GeForce GTX 645 OEM
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 1.2 1.1
Multi-display Tech Support Yes Yes
GPU Temperature Under Load 74°C Not Known
Idle GPU Temperature 30°C Not Known
3D Support Yes Yes
Noise Level Under Load 45dB Not Known
Idle Power Consumption 53W Not Known
Idle Noise Level 40.3dB Not Known
Multi-GPU Support Count 2 Not Known
PassMark (G3D) Score Not Known 1977
PassMark (DirectCompute) Benchmark Result Not Known 943
Ray Tracing Support No No
No. of Supported Displays Not Known 4
Miscellaneous Miscellaneous KFA2 GeForce RTX 2080 Nvidia GeForce GTX 645 OEM
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports KFA2 GeForce RTX 2080 Nvidia GeForce GTX 645 OEM
HDMI Output Support Yes Yes
GPU HDMI Version 2 Not Known
DisplayPort Output 3 1
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 2
Mini DisplayPort Output 0 0
General info General info KFA2 GeForce RTX 2080 Nvidia GeForce GTX 645 OEM
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 13600 million 2540 million
Semiconductor Size 12nm 28nm
PCI Express Version 3 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 283mm 145mm
Height 139mm 111mm
Memory Memory KFA2 GeForce RTX 2080 Nvidia GeForce GTX 645 OEM
Effective Memory Clock 14000MHz 4000MHz
Max Memory Bandwidth 448GB/s 64GB/s
RAM 8GB 1GB
Memory Bus Interface Width 256bit 128bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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