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by kllrnohj 1259 days ago
In highly multithreaded workloads the 13900 probably does fine (24 cores are 24 cores). It's the lightly threaded and gaming workloads where it's expected to suffer the most. Especially since the L2 cache is also cut on some of the non-K parts, which might be a first. The 13600 drops from 20mb on the k to 11.5mb on the non-K, that's a big drop.
1 comments
bryanlarsen 1259 days ago
It's the heavily threaded workloads that will suffer the most. In a single threaded workload that single core can get as much power as it wants in both K and non-K. In a multi-threaded workload the cores are power limited, and K has a lot more power than non-K so the effect of power throttling is felt more on non-K.
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kllrnohj 1259 days ago
Heavily threaded will suffer the most between the K & non-K, but not necessarily enough to drop below the "only" 16-core competition which was the comparison point here, not the K version. Especially since it's primarily the 8 P-cores that are really going to be impacted in such a scenario.

Hence why I specified "lightly threaded" not "single threaded" workloads. There's a whole huge market of workloads that sit at around 4-8 threads. They're called "video games" and it's what Intel has been bragging about being the best at for a while. The new crop of non-K's look prime to suffer the most in this workload relative to AMD's non-X competition.

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jeffbee 1259 days ago
On the contrary, the other article at the top of Anandtech right now shows that the K-series CPUs don't benefit from higher power levels in games. As far as games are concerned they might as well be 95W CPUs.
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kllrnohj 1258 days ago
Anandtech sadly only tested 2 games in a fairly narrow set of parameters. If you look at 13900K reviews, such as this one by techpowerup: https://www.techpowerup.com/review/intel-core-i9-13900k/22.h... you'll see gaming loads where the 13900K uses well past 120w. Civ 6, for example, sits at nearly 190w.

But also again remember the 13600 non-K has much less L2 than the 13600k. It's not just a power/turbo restriction.

But we'll see for sure when the 13th gen non-K reviews happen. That Intel didn't sample these to reviewers isn't a great sign, though.

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