Dual 2 two RX 580 Final Cut Pro X

VillasManzanill

macrumors regular
Original poster
Mar 7, 2012
102
7
Hello

I already have an Asus STRIX RX 580 8gb and i would like to know how good final cut X would be with a second RX 580 8gb

Does anybody have a BruceX test for final cut pro X with a Dual RX 580 8gb ?
i want to see real test to see if its worth it or just hype.

Thanks a lot!
 
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Flint Ironstag

macrumors 6502a
Dec 1, 2013
962
520
Houston, TX USA
Tried barefeats.com? Bet they have single / dual RX 580 on BruceX. I'd estimate +75% of single GPU performance per card if the app is multi-GPU aware and programmed well. Scaling varies per programmer and parallelism of problem.

In general it depends on:

- your Mac supporting multiple GPU
- your OS & app supporting multiple GPU
- if your app favors AMD or Nvidia
- if your app is multi-GPU aware
- even if your app favors AMD, Nvidia might still kick the snot out of AMD at equivalent price with technology from 2016 vs. early 2000s (particularly vs Apple) with a fraction of the power consumption.
- if you're running additional GPUs via Thunderboltx vs PCIe and how much that bandwidth matters to your workload

What are the specs of your current Mac?

Interesting benchmarks here:

http://barefeats.com/imac5K_vs_pros.html

Food for thought, but keep in mind, depending on your Mac - you'll most likely have additional expenses:

- Classic Mac Pro: physical installation, cooling, and power delivery considerations (slot spacing + cables (never mind Vega)
- nMP, iMac, Mac Mini, & laptops: Enclosures, cables, will affect performance - to what degree depends on TB version and application. and OS tinkering considerations. (OS version, eGPU enabler, disabling SIP, etc.)

I'm sure somebody has tried dual Polaris, but search and you'll find folks who have done far superior. Here's one for starters. (still don't know what kind of Mac you're on OP - post that please)

https://forums.macrumors.com/threads/ultimate-mac-pro-5-1-mod-for-triple-titan-x.2043646/

Vega needs to be $200 cheaper, RX 580 needs to be sub $250, R9 390? 290? 295? needs to be $100. They're all antiquated now. Great if you happen to have 2 of them for computation, but you need another 10 TFLOPs on top of that to even consider that you have the minimal definition of a modest number crunching station for an individual / hobbyist nowadays. They suck in crossfire and macOS doesn't support it. Is Ashes of the Singularity ever going to be ported? At least that will use as many GPUs as you have.
 
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VillasManzanill

macrumors regular
Original poster
Mar 7, 2012
102
7
High Sierra
Mac Pro 2010
1 Asus strix rx 580 8gb 2.5 slot wide
Dual Xeon x5690 3.46ghz
96gb ram 6 sticks 1333
SSD and hdd
4K monitor
Fcpx gopro 4 black footage cineform codec
 

VillasManzanill

macrumors regular
Original poster
Mar 7, 2012
102
7
Thats the whole thing, its supposed to be double performance, but is it REALLY so? i don't really wanna use all that money and do a whole PSU MOD to just to MAYBE found out whether it's really so or not.

i can't seem to find many people with dual RX 580 8gb BruceX benchmark

If anybody have actual real data let me know so then i can evaluate wheatear is worth the hassle and money spending. thanks
 

itdk92

macrumors 6502
Nov 14, 2016
480
170
Copenhagen, Denmark
Thats the whole thing, its supposed to be double performance, but is it REALLY so? i don't really wanna use all that money and do a whole PSU MOD to just to MAYBE found out whether it's really so or not.

i can't seem to find many people with dual RX 580 8gb BruceX benchmark

If anybody have actual real data let me know so then i can evaluate wheatear is worth the hassle and money spending. thanks
It’s worth it.

Also, BruceX is a very limited benchmark, stop taking it into account
 
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AndreeOnline

macrumors 6502
Aug 15, 2014
424
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Zürich
Thats the whole thing, its supposed to be double performance, but is it REALLY so?
Look.... give me an example in FCPX where your computer struggles today. What footage do you use? What's your timeline setup? What effects do you apply?

Two RX 580 will double the GFX performance in FCPX. That is not the same thing as doubling the performance of your computer. FCPX uses both CPU and GPU to a huge extent in various scenarios. If you know that you're gfx limited currently, then another card will definitely help.

The big question is if you really are gfx limited?
 

rueyloon

macrumors regular
Sep 24, 2013
171
11
Thats the whole thing, its supposed to be double performance, but is it REALLY so? i don't really wanna use all that money and do a whole PSU MOD to just to MAYBE found out whether it's really so or not.

i can't seem to find many people with dual RX 580 8gb BruceX benchmark

If anybody have actual real data let me know so then i can evaluate wheatear is worth the hassle and money spending. thanks
I did it for my R9-390X, went through the whole route of buying another 1000W PSU and running ugly cables everywhere. In my case, the improvement is only around 10-20% (self-created test cases). I don't feel it is worth it. I believe the understanding is that GPU is involved in only a small proportion of the processing.
 

DearthnVader

macrumors 6502a
Dec 17, 2015
889
4,857
Red Springs, NC
Not sure of the actual power requirements of the RX 580, I just installed one in a new system, and didn't have an 8 Pin connector, just two six pin's.

So I connected one 6 pin to the card and thrashed it mining Ether for a few days, rock solid.
 

VillasManzanill

macrumors regular
Original poster
Mar 7, 2012
102
7
I did it for my R9-390X, went through the whole route of buying another 1000W PSU and running ugly cables everywhere. In my case, the improvement is only around 10-20% (self-created test cases). I don't feel it is worth it. I believe the understanding is that GPU is involved in only a small proportion of the processing.
Did you try BruceX test to check the performance of your system with 1 and 2 gpu?

Thanks! This is what I wanted to hear. Real people actually testing Not just people saying, buy it, is worth it, without real data.

Adreeonline: Here an example of the videos I’m making. I have done more too and I’ll continue to film more and more.

 

rueyloon

macrumors regular
Sep 24, 2013
171
11
I can't remember the results, but it was something very minor.

https://forums.macrumors.com/threads/what-are-the-best-current-graphics-cards-for-cmp.2025989/page-2#post-24244163

Based on my past post, I had 2x390x and 1x390 running, and I got 22 seconds on BruceX

https://forums.macrumors.com/threads/dual-r9-390x-8gb-or-dual-rx-480-8gb-for-fcpx.2014114/

Based on Chriz_r's post, he got 19 seconds. He also posted that his dual RX 480 = 19 seconds, Single RX 480 = 22 seconds

Check out my benchmark for 3 graphic cards :) https://forums.macrumors.com/attachments/screen-shot-2017-01-28-at-10-26-56-pm-png.685942/


Did you try BruceX test to check the performance of your system with 1 and 2 gpu?

Thanks! This is what I wanted to hear. Real people actually testing Not just people saying, buy it, is worth it, without real data.

Adreeonline: Here an example of the videos I’m making. I have done more too and I’ll continue to film more and more.

 
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AndreeOnline

macrumors 6502
Aug 15, 2014
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Zürich
Adreeonline: Here an example of the videos I’m making. I have done more too and I’ll continue to film more and more.
OK! Of course... the end result will look the same regardless if you render on a Mac Pro or MacBook Air. I can't tell just by looking at rendered footage where you felt your computer "got in your way".

It comes down to how gfx intensive your workflow is. The second card, as I was trying to say above, only helps with stuff where you're performance limited by the gfx card.
 

VillasManzanill

macrumors regular
Original poster
Mar 7, 2012
102
7
Sometimes i use a plugin to remove noise called Neat Video and its extremely cpu gpu intensive. i wonder if dual rx 580 8gb helps at all.

i have seen those benchmarks of Chriz_r one of the best FCPX post i have seen so far.
the only problem is that it was done on not the current high sierra. probably dual gpu has been optimized and specially rx 580 but i want to make an informed decision based on numbers and results. thanks if anybody its got test of dual rx 580 let me know.
 

orph

macrumors 68000
Dec 12, 2005
1,852
379
UK
@VillasManzanill you may get a speed up from a faster drive setup, maybe a SSD for you working project and using a spinning disk for archiving
ie SSD just for live projects, move project on to SSD work on it then once complete move it over to your HD

when you say slow what is it that is slow? final exports, time line, rendering effects, etc..
do you have proxy's on?

im a bit outdated on FCX (been on PP to long), drive setup matters a lot for most video apps so maybe thats the cheapest/biggest easy speed gain you can get.
 

VillasManzanill

macrumors regular
Original poster
Mar 7, 2012
102
7
Everything is fast. you can look at my setup on my signature. im just wondering if dropping in a 2nd rx 580 would be a significant increase of performance specially in exporting/rendering times at the end of projects.

i don't use proxies, only original files highest quality and the whole 4k timeline runs smooth.
 

theitsage

Suspended
Aug 28, 2005
795
840
I've been running a dual reference RX 480 in my 5,1 for a year now. Single RX 480 yields 18s in BruceX. Sub 12s with the dual setup. This was done with PCIe SSD only.
 
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VillasManzanill

macrumors regular
Original poster
Mar 7, 2012
102
7
Thanks @AndreeOnline thats helpful
Yesterday’s I left a video of only 4 min rendering exporting with neat video plugin, wow it’s so slow, I had to leave my Mac all nite on to continue to do the export. I can’t really work in the timeline if I activate the plugin, I have to active it only at the end of editing.
Maybe it was cuz my high settings I applied. What program do you use to check if your gpu is being used or not?

@theitsage why don’t you use dual rx 580 setup instead of dual 480?


We should make a sticky topic that is all about Final Cut Pro x and benchmarks hardware and tips and tricks for Mac editors and what’s best for best performance. It’s a big reason why so many people keep this old machines, for video editing in Final Cut. Even hackintossh people build them just for that pourpose.
 

itdk92

macrumors 6502
Nov 14, 2016
480
170
Copenhagen, Denmark
I did it for my R9-390X, went through the whole route of buying another 1000W PSU and running ugly cables everywhere. In my case, the improvement is only around 10-20% (self-created test cases). I don't feel it is worth it. I believe the understanding is that GPU is involved in only a small proportion of the processing.
The r9 390 is also one of the few GPUs that has very unoptimized drivers in macOS