Online specs says T610 idles at ~12W and full load at ~20W [1], but I haven't personally measure it myself. I'll try measuring it myself when I got a chance later.
If it's really idle at 12W, it means the electricity cost is about $12/year. For comparison, I think pi4 averages at ~5W.
If it's really idle at 12W, it means the electricity cost is about $12/year. For comparison, I think pi4 averages at ~5W.
[1] https://www.parkytowers.me.uk/thin/hp/t610/