I updated Bios to latest, and the MB temp dissapeared from Speccy, but returned high after reboot.
MSI support replied that I should only look at BIOS CPU and SSD temp if the PC is runinning OK, do I just ignore now.
PS not sure if its throyylng but my Adata S70 Blade t1b is seq write on 4800 read 4700 but ssd temp at 55 to 63C