Now that we’ve seen how each of these CPUs perform, how much power does it take to deliver their respective performance? We already knew the Intel i9-7900X was a real power hungry beast, so it’s no surprise that it uses more than double the power of the Ryzen 1800X. Let’s hope Intel do for the 7900X what the 7740X did for the 7700K, because that’s just a stupid amount of electricity. The Ryzen 7’s and the Intel 7740X are all about on par, which shows just how narrow that gap between the twos efficiency is becoming. Of course, the Ryzen 3’s were the least power hungry, but that didn’t stop them from offering up competitive performance either.
Overclocking took the power requirements to new heights for the bigger Intel chips, and the 1800X and 1700X almost topped 200W too. I am happy to see all chips didn’t see a big increase in Idle performance while overclocked though, so it’s not like you’ll be burning all that extra juice 24/7.
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Overclocking didn’t push it up too much either, still under 100W while stressing the CPU.
Now that we have all CPUs tested on the same cooler, we can see things how they truly are. The Ryzen 1800X and the Intel 7900X topped out at 70c, although the Intel chip idled a LOT lower. Ryzen 5 and 7 chips do tend to have a higher idle, as they have a few more cores than most. The 7740X idles at just 28c and topped at a reasonable 62c.
Overclocking caused the Intel chip to skyrocket to a whopping 94c, which is worrying, and with a much bigger… ok a LOT bigger cooler you may be able to squeeze more performance, but it could be diminishing returns on your investment.
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