That’s actually exactly the reason why I didn’t upgrade. I have miniITX board with a very low TDP CPU and there’s not been anything as efficient as this one.

If you mean that faster hardware can do tasks faster: this thing has no problem running all the services I want/need, which includes some game servers.

If you are counting costs of power, also factor in the cost of new hardware as opposed to the one you have around or can be secondhand for cheap.