RX 580 Seriously Underperforming - New GPU

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rj16184

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Dec 25, 2017
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Tearing my hair out over this problem with my new Ryzen RX 580 Graphics card. It is seriously underperforming, hitting around 30-40 FPS where it should be hitting 60+. Metro Last Light dipping below 20 just walking around. Monitor running at 1080p. Fresh install of windows, latest BIOS (Got a performance bump of maybe 10 FPS by doing this, it was previously hitting around 20-30 FPS). Latest AMD drivers. 450W PSU. Ryzen 5 1500X.
Any tips? The rest of the PC is a couple months old, been running fine. Things i've noticed is a high pitch squeal coming from the card when under load, sometimes, changes with whats displayed on the screen. (Checked it is seated properly) and there is a fair old bit of screen tearing. Temperatures seem normal pretty stable, idling around room temperature, getting in to the 60's under load.
Thank you!
Rhys
 
Solution
R
Solved just posting here to let others know: it was PhysX it was wiping away the FPS, over 100 in fact. With PhysX disabled I went from 18FPS to 140FPS

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450w power supply is not good enough for a 580


are you monitoring cpu temps?
 
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yeah, CPU temps are stable too, all fall well within operating values, I did a couple PSU wattage calculators online that have served me well in the past, they all said a 430w PSU would be fine, so I got a 450w Corsair PSU.
 
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the card by itself can draw ~210w


you want to be max 80% of the rated wattage of the psu


so for 450w unit = 360w


if you are overclocking anything then power draw increases quite a bit
 
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So would you advise a new PSU then? Will that give me the extra performance. I was only going by calculators but HWMonitor is only reading about a 150w draw under load for the GPU and about 70W for the CPU. Not planning on overclocking or anything
 
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Corsair CP-9020049-UK VS Series ATX/EPS 80 Plus Power Supply Unit, 450w
 
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Fair, so you think I could rescue the lost performance with a new PSU?
 
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I should add, CPU is performing fine, doesn't nearly max it out and geekbench score are fine. The GPU however gets maxed out just walking around the tutorial in Metro
 
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I have the same card now, but my PS is a 1000W one.
What are your benchmarks?
Pass_Mark_V9.jpg
 
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What benchmark software is that, my CPU benchmark was fine, 14000 all cores, and the GPU was 2250 on Ungines Heaven 4.0
 
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Solved just posting here to let others know: it was PhysX it was wiping away the FPS, over 100 in fact. With PhysX disabled I went from 18FPS to 140FPS

 
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Solution


Well firstly congrats mate.
AS far as I know you are he first person to actually find that physx cripples ryzen builds.

I say ryzen not rx 580 simply because the physx engine should default to cpu rendering if you dont have a card that has physx hardware capabilites onboard.

The metro games are massive on physx effects,even the shell casing bouncing out of the gun pulls big usage.
That said Ive run metro in the past on a full old amd system with an fx6300 & a 280x,physx enabled could drop upto 40% of the fps but that is nowhere near the crippling effect you've experienced.

So you just disabled ingame & still have the physx software actually installed ??


 
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I think that's a little placebo effect,shouldn't alter any benches as the physx engine has to be actually called upon to run.
Which only happens in phsyx enabled titles of which there are maybe 20 at most.

 
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On another note you should still really really replace that corsair vs mate,its fine for low wattage office builds & the like but you are on borrowed time with your setup running on one.
Its also 99.9999% likely the cause of the coil whine you mentioned previously.
 
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I had used in the past a GT 730 (single slot) and dedicated it only to PhysX, while the 3D was handled by a GTX 960. In Fallout 4 with PhysX enabled it was helping a lot. GPU-Z was showing a GPU max usage of 60% (varied with amount of derbies flying around) for the 730 in that scenario.
Now that I have switched to ATI, I am wondering if I should test that again, in a mixed ATI/nVidia setup, under Windows 10 x64.
 
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