Yes, Speedfan might work well for this, providing no adjustments are made and it's used purely for logging.
To be on the safe side, the Boot Start should be changed to Demand Start; from Device Manager > View - Show hidden devices, drill down to Non-Plug and Play Drivers > speedfan - right-click > Properties - Driver tab and set Startup to Demand. Check this setting after the next reboot (and after any subsequent use)!