475w vs 380w entire system in that benchmark.
So the 10y old xeon uses 25% more power.
This is a trade-off for a lot more pcie lanes and better multi-core performance.
You can't compare the TDP directly because xeons use different calculation. VRM is integrated (so that is why cheap chinese mobos can run these may core monsters with unlocked turbo)
The 2697v3 has the following TDP:
TDP base 145w
Dram 25W
TDC 208A
Max power limit 290w (40 sec)
P1: 145w (10 sec)
P2: 174w (7ms)
can't disable TDP limits on the xeon, it is a hard limit.
The i3 is at stock:
Base 60w
P1? 89w i think.
i dont know the other parameters, but i think it is almost maxed out.
But in the benchmark all limit are disabled for the i3
BTW i have a i9 7980XE that eats 400-500w when fully loaded, just the cpu. And i don't care.