In data giovedì 16 aprile 2020 15:54:34 CEST, Moshe Werner ha scritto:
Hi everyone,
I am thinking of upgrading my audio PC/Laptop
[...] some people in the usual forums tend not recommend
AMD, because of latency issues.
Are there any Linux users successfully using Ryzen CPUs for low latency
work?
I think there are a few things to look at regurding this, Intel has been
recomended for a lot of people because graphics (at least the built in
ones) are a non-issue (except the Atom ones which otherwise are quite nice
Audio CPUs).
The second thing is that people have been tweaking Intel machines for a
long time. So the tweaks are well known. AMD has had a history of using
tricks and hacks to at least look like they are out performing an Intel
equivelent. Different speeds from core to core etc. And while none of
these things should be a problem so long as they are easy to control,
maybe not that many people know how. People have just used what is known
and easy to use. Intel has tended to contribute to the linux kernel to
make sure everything works. I am not so sure about AMD.
So I don't think the AMD CPUs are bad, there is just less info on
tweaking. Another thing to remember is that modern Intel mother boards are
not as easy to get good performance on either. All the "affordable" Audio
units are now USB which was never really designed to be low latency in the
first place. So low latency has gone from being able to get solid sub ms
latency to good 5ms latency so far as I can tell (one way jack latency
only). Either the world has found out that 5ms is "good enough" or those
who want more will have to spend more.
Another thing that has changed is how USB is implemented. On a lot of
mother boards it is impossible to get one's mouse and keyboard on a
different USB bus from the audio interface. It seems to only sure way is
to add a PCIe USB card for the audio box. It used to be that one side of
the computer was one bus and the other side was another... not any more.
The computer does internal routing to put all of them on one bus except
may be USB3 stuff (which I have none of).
--
Len Ovens
www.ovenwerks.net
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