DDR3 era processors are severely outdated today, with the strongest d3cpu 5th gen i7 unable to match performance of 6W TDP N100

7th gen still supported DDR3L (with a suitable motherboard, obviously) and it's possible with 9th gen if you're willing to try "coffee time" mod.

I would argue that my old 4790K with dual channel ddr3 19200, at 10x power, is similar or better. That box lasted way longer than was reasonable.