how can i change the emu to run on ss3 instead of avx
Started by omegadavid




3 posts in this topic
omegadavid
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7 posts 3 threads Joined: Sep 2017
09-02-2017, 02:04 PM -
#1
title says it all. is it possible to run rpcs3 on sse3 instead of avx because i have a ryzen 1700x and it really is horrible when emulating on AVX
Ani
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4,373 posts 105 threads Joined: Aug 2017
09-02-2017, 03:52 PM -
#2
RPCS3 uses SSSE3 not SSE3
That being said, there's no toggle for disabling AVX
    Desktop: Ryzen 7 5800X,   Radeon RX 6800 XT, 2x8G DDR4 3600MHz, Manjaro Linux
     Laptop: Ryzen 9 5900HX,  Radeon RX 6700M,   2x8G DDR4 3200MHz, Manjaro Linux
Old Desktop: AMD FX-8350,     Radeon R9 280X,    2x4G DDR3 1600MHz, Manjaro Linux
ProbablyLotte
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1 posts 0 threads Joined: Sep 2017
09-16-2017, 04:13 AM -
#3
(09-02-2017, 03:52 PM)Ani Wrote: RPCS3 uses SSSE3 not SSE3
That being said, there's no toggle for disabling AVX

Any plans to implement other x86 instruction sets, or any easy way to switch between them?
As OP said, the Ryzen series of processors don't handle AVX as well as Intel's CPU's, since they complete one AVX instruction per two clock cycles. Since the Zen uArch processes 128-bit instructions per cycle. (iirc)

(Also, Hi, I'm new here.)
ps0ne
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304 posts 59 threads Joined: Oct 2017
10-01-2017, 08:22 PM -
#4
What if you use bcedit tool and run command

bcdedit /set xsavedisable 1


and then reboot?


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