Table 2 Comparison between various probabilistic computing hardwares

From: Probabilistic computing using Cu0.1Te0.9/HfO2/Pt diffusive memristors

 

CMOS-based12

Magnetic Tunnel Junction-based12, 53

Memristor-based

Fabrication (Device)

Complex (Transistor Logic)

Complex (Ta/Pt/[Co/Pt]7/Co/Ru/[Co/Pt]2/Co/Ta/CoFeB/MgO/CoFeB/Ta/Ru/Ta)

Simple Metal/Insulator/Metal (CuxTe1-x/HfO2/Pt)

Power Consumption

200 μW

10 μW

154 nW @ 5.4 V

CMOS circuits (Number of transistors)

LFSR (1194)

NMOS+Comparator (11)

Comparator (10)

Potential switching speed of the device

100 ps12

200 ps18, 52

85 ps18, 46

  1. For the MTJ and CTHP devices, only energy for the probabilistic device was considered (comparator energy consumption was excluded). However, the operation speed of the MTJ is higher than CTHP.
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