this post was submitted on 21 Nov 2023
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For much of the 2010s, we were stuck with mainly dual-core and quad-core CPUs in PCs. However the arrival of Ryzen shook the PC industry, causing a rapid increase in core counts. At the time, there was fervent discussion on this matter, with many questioning if more cores were worth it, and how many cores are more than enough?

So how do things stand today? The latest Intel and AMD consumer processors top out at 24 and 16 cores respectively. What extent of modern software can take advantage of all those cores? What modern workloads are still bottlenecked by single threaded performance?

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[–] [email protected] 1 points 1 year ago (1 children)

Probably (it widely depends), it's very useful to increase core counts to about 8 cores in most cases. After that, the actual practical returns are greatly diminished. So, moving from 8 to 16 grants only 15-20% better performance, etc.

I would much rather take 8 cores with Zen 5 performance per clock and frequency of 8 GHz rather than 128 cores with Zen 1 performance per clock and (all-core) frequency of 3.8 GHz. In a vast majority of workloads, the former would outperform the latter.

[–] [email protected] 1 points 1 year ago

Zen 5 performance per clock and frequency of 8 GHz

May the Liquid Nitrogen be with you!

[–] [email protected] 1 points 1 year ago (16 children)

Gaming still heavily prefers single threaded performance.

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[–] [email protected] 1 points 1 year ago (5 children)

Gamer checking in. Single core performance is very important as games are not quite yet capable of taking advantage of say 12 cores compared to 6 higher performing cores.

It’s why the 5600x3d performs so closely to the 5800x3d while gaming despite it being a 6 core vs 8 core comparison. We encountered something similar a decade ago with i5 vs i7 for gaming games we’re not capable of taking full advantage of hyperthreading. But as time went on the gap between the two widened.

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