Quote from: Grinnie Jax on February 01, 2021, 05:05:10
2) Secondly, power consumption. Rocket Lakes are damn power hogs, easy to see from the leaks and the mere fact that Z590 boards have power stages enough for 64-core Threadripper. Several leaks suggest that 250-300W under load for sure.
High-end motherboards are designed to allow overclocking. That's where things can get complicated. And yes, the 900K has a very big short term power limit that an Epyc or Xeon wouldn't have to be ashamed of (or would they, since efficiency can matter in servers quite a lot). Also, quite a lot of the manufacturers have a history of "cheating" - tricking the processors into drawing more power than they should, ignoring Intel's guidelines. You could have even something like 9700 consume horrendous amounts of power because of it, trying to brute force some extra performance out of the chip. Because of the nature of the power and performance relationship, you can reduce power draw into sane levels without much sacrifice. Not to mention that these extreme power draws tend to be in AVX512 workloads. Which Ryzen doesn't support.
So no, these processors shouldn't consume 300 W and certainly not for prolonged periods. Unless the motherboard is naughty and is trying to fry your processor. 11900K shouldn't be any less efficient than 10900K and there are two fewer cores to feed (so, at any given all-core frequency, you should see at least 20 % less power being drawn just because there are 20 % fewer cores).