One device based on intel was reported in New, powerful FreedomBox hardware available for purchase! - #12 by Sunil to consume 10 W. I have a PC with a i7-10710U CPU with one NVE disk and one SSD running as a server, it consumes around 12 W.
That would need to be compared with the raspi5 with some disk (it consumes more power than the raspi5 alone).