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A comment on Intel Announces 9th Gen Core CPUs. Parent comment

Re:Intel Announces 9th Gen Core CPUs by gameswithgo on Monday October 08, 2018 @03:03PM (#18170298)
Ryzen still stuck at SSE instruction. AVX2 instructions are faked and go at SSE speed.

[EDIT - removed AVX-512 claim that was wrong]

Overall perf is likely a lot better with the i9 for most workloads.

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Re:Intel Announces 9th Gen Core CPUs by jsheard on Monday October 08, 2018 @03:25PM (#18170508)
The i9-9900k does not support AVX-512, since it's still based on the Coffee Lake uarch. ARK confirms: https://ark.intel.com/products/186605

It's true that Coffee Lake has a performance edge over Ryzen when running AVX/AVX2 code though.

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Re:Intel Announces 9th Gen Core CPUs by floatboth on Monday October 08, 2018 @05:27PM (#18171477)
"SSE speed" is the most meaningful term I've ever seen.

Ryzen doesn't have 256-bit wide units, so 256-bit instructions take 2x as long.

The benefit of that is that Ryzen doesn't throttle the clock speed of the whole chip when executing AVX2 instructions :P

Intel's widening of units has brought a giant downclocking problem: https://blog.cloudflare.com/on-the-dangers-of-intels-frequen...

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Re:Intel Announces 9th Gen Core CPUs by floatboth on Tuesday October 09, 2018 @05:54PM (#18180141)
(least meaningful of course)
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