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Comment by DiabloD3 | Hacker News Reader

I watched the keynote live.

I'm sold, my desktop is most likely going to be a Ryzen (although not the 8/16 monster, come on, it's a desktop, if I need high core count, I have stuff at work for that).

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The "monster" is the 12/24 and that's still only 105W. For a real monster you'd need a Threadripper. The cheaper 8/16 at 65W/329$ looks like a great choice. But I guess 6/12 for 130$ less is also nice.

I don't mind 12 cores / 24 threads on my desktop. Makes compiling Mesa, Wine and Linux kernel a lot faster.

I do a bunch of live video stuff (which, for the uninitiated, means "hi, I'm ffmpeg, I want all your processors") and I learned, the hard way, that I couldn't put a 16C/32T Threadripper in the box--it's a 4U case in a Gator transport case--because 180W would blow out my heat budget. 12C/24T at 105W should be doable. I'm excited; right now I'm constrained because stuff like my CG system is built on Chromium and so it gets a little chewy when I run multiple independent overlays. Doubling my cores--I have a Ryzen 1600 in there right now--and probably increasing single-thread performance by 40% should make my life pretty interesting.

Yeah, video encoding will surely benefit from it as well.

Back of the matchbook, I should be able to encode 1080p60 at something like medium presets.

"Medium" is really good.

Cool, but we haven't seen compiling benchmarks yet. 12 cores might be bottlenecked by dual-channel memory.

Would be good to see some benchmarks.

agree. Hopefully the seventy megabytes of cache between the two chiplets will help...

The AMD Threadripper 2990WX has 32 cores with quad-channel memory, and it seems to do fine.

Compilation workloads are not really bandwidth sensitive at all. The existing quad-channel 32 core 2990WX compiles the Linux kernel faster than the 8 channel 32 core EPYC 7601 thanks to its higher clock speeds in spite of having half the memory channels. So I think it is safe to say that memory bandwidth is a total non-issue for this type of workload.

Benchmarks here:

https://www.phoronix.com/scan.php?page=article&item=amd-linu...

https://www.phoronix.com/scan.php?page=article&item=amd-epyc...

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