I have an HP g3 mini and a Dell Optiplex flying around, both similarly specced. The HP has an i5 6500t and 16gb DDR4 RAM, the Dell has 8gb DDR3l, so nothing too different.
However, the Dell draws around 15W while idle, the HP one 5W.
The only difference I could think of (and that is in my power to change) is the PSU. The Dell has one of those SFF PSU for up to 180W while the HP has an external 65W power brick with a barrel jack.
So my question is: Does anyone have experience with one of those Pico PSUs? I guess they should be more efficient? I’m not planning to put anything power hungry into the optiplex.
Switching power supplies (“bricks”) are generally more efficient than linear power supplies because they lose less energy as heat. that’s were the difference comes from. (Of course they have drawbacks as well, like increased noise)
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That’s fair; I wasn’t really considering how poorly performing PSUs were at extremely low loads, despite knowing that they are.
Odd that a random brick would be substantially better than a same-era actual PSU, but I suppose it’s hard to say without more specifics.
Switching power supplies (“bricks”) are generally more efficient than linear power supplies because they lose less energy as heat. that’s were the difference comes from. (Of course they have drawbacks as well, like increased noise)