DPC latency better with AMD graphic cards (3 card comparison)

Configure and optimize you computer for Audio.
ELEKTROID
KVRist
118 posts since 16 Feb, 2006 from UK

Post Mon Apr 30, 2018 9:36 am

Good info and tips, thanks Pictus.
We are the music makers, and we are the dreamers of dreams.

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Synthman2000
KVRian
516 posts since 27 Apr, 2016

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Wed May 16, 2018 10:06 am

A worthy share. The mantra of winning PC audio systems is Intel CPU's and ATI (now AMD owned) video cards. Always seemed to have worked for me. In fact installing the budget silently cooled ATI Radeon in a PC 8 months ago stopped some rare and random crashes I was experiencing. I traced to to an iffy Win 10 video driver for the motherboard Intel on board video. So I disabled the on board video in the BIOS and put a PCI-e ATI card in.

I found this ATI card more robust than the on board Intel video chip and drivers for this particular motherboard.

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Pictus
KVRist
67 posts since 21 Aug, 2017

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Mon Aug 27, 2018 7:23 am

ELEKTROID wrote:Good info and tips, thanks Pictus.
You are welcome, Nvidia users may want to set the GPU to MSI(Message Signaled-Based Interrupts) mode https://forums.guru3d.com/threads/windo ... ts.378044/
Can use MSI utility v2(run as administrator)
http://www.mediafire.com/file/2kkkvko7e ... til_v2.zip
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Last edited by Pictus on Mon Oct 01, 2018 10:44 am, edited 1 time in total.

alec.tron
KVRer
19 posts since 10 Sep, 2017

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Thu Sep 13, 2018 6:22 pm

Out of curiousity - what motherboard (& cpu combination) was this with ?
I'm asking as I have yet to find another benchmark/hardware test website like Anandtech where they actually test motherboards for DPC Latency... and Anandtech seems to do less and less testing these days as well... either way, the few they Z270/Z370 motherboards have tested seem to be ridiculous step backwards when it comes to DPC latency.
c.

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Lesha
KVRian
1373 posts since 18 Feb, 2005 from Serbia

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Fri Sep 14, 2018 1:23 am

alec.tron wrote:Out of curiousity - what motherboard (& cpu combination) was this with ?
I'm asking as I have yet to find another benchmark/hardware test website like Anandtech where they actually test motherboards for DPC Latency... and Anandtech seems to do less and less testing these days as well... either way, the few they Z270/Z370 motherboards have tested seem to be ridiculous step backwards when it comes to DPC latency.
c.
I was using Asus Prime B350-Plus.
It's easy if you know how


Kaine
KVRAF
1759 posts since 4 Nov, 2004 from Manchester

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Mon Sep 17, 2018 12:35 am

Pictus wrote: Nvidia users may want to set the GPU to MSI(Message Signaled-Based Interrupts) mode https://forums.guru3d.com/threads/windo ... ts.378044/
Just to note, as far as I can tell this is done by default under w10, I've not checked older OS's.

kmonkey
KVRAF
3868 posts since 17 Aug, 2004

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Mon Sep 17, 2018 12:45 am

Good thread thanks for all efforts.

AdvancedFollower
KVRist
65 posts since 8 May, 2018

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Sat Sep 22, 2018 7:52 am

Ben H wrote:So you only tested ONE nvdia card?

That's a pretty flawed test then.
FWIW, here's what I get:

Image
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Ryzen 7 1800X, Asus Prime X370 motherboard, 16 GB DDR4 3200, Asus GTX 1070 with 411.63 drivers, Windows 10 Home 1803, AudioBox USB 96 interface

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Lesha
KVRian
1373 posts since 18 Feb, 2005 from Serbia

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Sat Sep 22, 2018 8:10 am

AdvancedFollower wrote:FWIW, here's what I get:

Ryzen 7 1800X, Asus Prime X370 motherboard, 16 GB DDR4 3200, Asus GTX 1070 with 411.63 drivers, Windows 10 Home 1803, AudioBox USB 96 interface
Thank you, that's almost the same latency I got with my old nVidia card.
It's easy if you know how

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Pictus
KVRist
67 posts since 21 Aug, 2017

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Sat Sep 22, 2018 11:11 am

Kaine wrote:
Pictus wrote: Nvidia users may want to set the GPU to MSI(Message Signaled-Based Interrupts) mode https://forums.guru3d.com/threads/windo ... ts.378044/
Just to note, as far as I can tell this is done by default under w10, I've not checked older OS's.
Not always...
One time it was, then NVIDIA changed and now I do not know...
Anyway, can check with MSI utility v2 (run as administrator)
http://www.mediafire.com/file/2kkkvko7e ... til_v2.zip
http://www.mediafire.com/file/2kkkvko7e ... til_v2.zip
Image
Last edited by Pictus on Mon Oct 01, 2018 10:45 am, edited 1 time in total.

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fluffy_little_something
KVRAF
11993 posts since 5 Jun, 2012 from Portugal

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Sat Sep 22, 2018 11:39 am

I have heard that for years, i.e. long before Ryzen: use AMD graphics with an AMD cpu and Nvidia graphics with an Intel cpu...

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KVRist
65 posts since 8 May, 2018

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Sun Sep 23, 2018 6:33 am

fluffy_little_something wrote:I have heard that for years, i.e. long before Ryzen: use AMD graphics with an AMD cpu and Nvidia graphics with an Intel cpu...
That's not really what it is about in this case. It's about the DPC latency penalty of using an Nvidia card, and applies whether you're using an Intel or AMD CPU. It's the Nvidia GPU driver itself that's causing more DPC latency than the AMD GPU driver.

klapton
KVRer
9 posts since 4 Sep, 2014

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Mon Sep 24, 2018 7:16 pm

On my desktop, I had been running the built-in Intel graphics for a while on my i7 audio system. When I got a 4k monitor, the integrated graphics would only run the 4k monitor at 30hz with a lot of lag. So I bought an Asus nVidia GTX 1060. I noticed audio dropouts where I didn't have any before. I didn't perform DPC latency times while on integrated Intel. But the nVidia DPC times didn't look good. I just bought and put in a Gigabyte RX-550. My DPC latency times are less than a 3rd of what they were on the nVidia and the dropouts are gone.

Thanks team!

(I'll keep in mind the AMD vs nVidia latency times should I ever shop out another laptop.)

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Lesha
KVRian
1373 posts since 18 Feb, 2005 from Serbia

Re: DPC latency better with AMD graphic cards (3 card comparison)

Post Tue Sep 25, 2018 3:36 pm

klapton wrote:On my desktop, I had been running the built-in Intel graphics for a while on my i7 audio system. When I got a 4k monitor, the integrated graphics would only run the 4k monitor at 30hz with a lot of lag. So I bought an Asus nVidia GTX 1060. I noticed audio dropouts where I didn't have any before. I didn't perform DPC latency times while on integrated Intel. But the nVidia DPC times didn't look good. I just bought and put in a Gigabyte RX-550. My DPC latency times are less than a 3rd of what they were on the nVidia and the dropouts are gone.

Thanks team!

(I'll keep in mind the AMD vs nVidia latency times should I ever shop out another laptop.)
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