kicad-developers team mailing list archive

[Andrew Lutsenko <anlutsenko@xxxxxxxxx>]

My analysis of threadrippers vs top of the line Ryzens, condensed in 2
points:
1. For significantly more money you get few more cores, a lot more PCIe
lanes and 20-30% less frequency (single thread performance).
2. Unless you know that your workload is easily parallelizable to 50+
threads, requires a lot of very fast storage (lots of PCIe ssds) and does
not depend on single core performance, threadrippers are not worth it.

For general workstation use case sweet spot in terms of perf/dollar is
actually cheaper R7 3700x. R9 3900x is better only if you regularly do
something that will use all 12 cores because it costs $200 more. Upcoming
3950x probably will be fine example of diminishing returns and not worth it
for majority of use cases.
When talking about perf/dollar for threadrippers one should also take into
account increased cost of motherboards and cooling for TR sockets which
also doesn't play in their favor.

Best,
Andrew

On Thu, Oct 31, 2019 at 7:28 AM Wayne Stambaugh <stambaughw@xxxxxxxxx>
wrote:

> Good to know.  I didn't realize the gen 3 threadrippers were not out
> yet.  I may have to rethink my build.
>
> Thanks,
>
> Wayne
>
> On 10/31/2019 9:57 AM, Jon Evans wrote:
> > I don't own either, but am planning a Ryzen build.  The Threadrippers
> > built on the third-gen Zen are not out yet, but presumably they will be
> > even better as workstation/server CPUs than third-gen Ryzen.  On the
> > other hand, if buying parts today, the 3900X / 3700X seem like way
> > better bang for the buck than any of the older Threadrippers.
> >
> > -Jon
> >
> > On Thu, Oct 31, 2019 at 9:52 AM Wayne Stambaugh <stambaughw@xxxxxxxxx
> > <mailto:stambaughw@xxxxxxxxx>> wrote:
> >
> >     Hi Adam,
> >
> >     I would think so if we to fix the crash bug on macos.  We would need
> a
> >     5.1.5-rc1 build with ngspice 31.3 so users could test.  I would hope
> one
> >     or more of our macos devs would also test this using our spice demos
> to
> >     at least confirm that things work as expected and that the crash bug
> has
> >     been resolved.
> >
> >     Cheers,
> >
> >     Wayne
> >
> >     To get this thread back on track.  Anyone have any experience with
> the
> >     new AMD threadripper processors and how they compare to the Ryzen
> and/or
> >     Intel core I7 processors?  I actually have a new System76 desktop
> speced
> >     out with one but I was wondering if the extra cost was worthwhile.
> >
> >     Cheers,
> >
> >     Wayne
> >
> >     On 10/30/2019 1:50 PM, Adam Wolf wrote:
> >     > Do we want to switch to this for the next stable release?  If so,
> what
> >     > is the procedure for making sure it's tested?
> >     >
> >     > Adam
> >     >
> >     > On Wed, Oct 30, 2019 at 12:49 PM Holger Vogt
> >     <holger.vogt@xxxxxxxxxx <mailto:holger.vogt@xxxxxxxxxx>> wrote:
> >     >>
> >     >> Simon,
> >     >>
> >     >> I had a quick look at
> >     >> http://ngspice.sourceforge.net/ngspice-eeschema.html#external ,
> where
> >     >> you still are still using ngspice-28.
> >     >>
> >     >> Would you mind to switch to tag ngspice-31.3? There have been a
> >     lot of
> >     >> bug fixes an enhancements, many of them initiated by KiCad users.
> >     So it
> >     >> might be good to make the improvements available to everybody.
> >     >>
> >     >> KiCad for macOS distribution should use this most recent build
> >     anyway to
> >     >> get rid of the annoying crash bug.
> >     >>
> >     >> Holger
> >     >>
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