Intel 12-Series CPU Reviews

Reviews have begun pouring out for the new 12th generation Intel CPUs. Here are evaluations of Alder Lake processors:

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Re: Intel 12-Series CPU Reviews
Nov 4, 2021, 13:57
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Re: Intel 12-Series CPU Reviews Nov 4, 2021, 13:57
Nov 4, 2021, 13:57
 
The 12600K looks pretty good for $300. Power usage is still on the high side (nearly doubling that of the 5600X under heavy load), but it's not the 300-350W insanity that the unleashed 12700K and 12900K will slurp, unless you overclock. Consumption is much more comparable when "only" gaming, but that's also where the performance difference is the least significant... It's disappointing to see that DDR5 makes so little difference in general (Watch Dogs: Legion apparently loves it, though), so that's just a massive waste of money right now.

RaZ0r! wrote on Nov 4, 2021, 13:09:
From HardwareUnboxed:

"I’ve found what looks to be an issue/bug with Windows 11 with AMD CPUs that might catch reviewers out. If you install W11 with a 5950X for example, and then change to the 5800X or really any other Ryzen CPU, the L3 latency increases..."
"and gaming performance drops quite significantly, sometimes by 20%. I’ve had this issue with a few CPU changes now. I first ran into it with a fresh W11 install on the Ryzen 5 3600, installed the 5950X and gaming performance was well down on where it should be..."
"Basically, it seems like you have to fresh install Windows 11 for every CPU change. I’d like to know if anyone else is seeing this issue or can replicate it. Needless to say it’s making updating our data a nightmare."

Starts here:
https://twitter.com/HardwareUnboxed/status/1454778534929461249

I wonder if some of the reviews are skewed because of this?

Probably, which highlights the issue of basing reviews on a brand new OS. I've no doubt that was mandated by Intel, as it's supposed to be more effective at assigning tasks to the appropriate "big" or "little" cores and most reviews make specific mention of that without any real evaluation. Some outlets are still working on Windows 10 benchmarks, so the comparison there should shed more light on both sides.
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