RX 580 Expresscard awful gaming performance
Hey guys I need some insight. I have a DELL Precision m4700 with an i7 3740qm cpu and 16gb of ram that I paired up with an MSI RX580 Gaming X 8GB using the Expresscard version of the gdc exp, and the GPU is plugged into an external monitor.
Everything is setup just fine, I have the latest AMD drivers and I never had any windows errors or nothing. The only issue is the dogshit performance in games, when I try running GPU benchmarks like 3Dmark or Heaven 4.0 I get scores that are up there with a normal desktop RX580 , maybe a bit lower but definitely close. But whenever I try to play a game it runs like shit. Now just to be clear I'm not so naive that I didn't expect a drop in performance since it's an egpu, but I'm not talking a 25% drop here it's more like I'm getting barely 25% of the performance!
Games like Forza horizon 4, monster hunter world where a desktop RX580 gets 80 fps on ultra at 1080p, I get maybe 30 fps on medium at my monitor's lower resolution of 1360x768.
I thought for awhile that it was an issue with my PSU since it was kinda old so I went and got a quality one which didnt change anything. I even tried overclocking the card to 1400/2200 and all that did was gain me a couple fps.
I genuinely have no clue at this point, surely this is not how it's supposed to be right? Anybody with an RX 580? what kind of performance are you getting?
If you're using the internal display you're strangling the performance. You need an external monitor to maximize performance through an express cardsetup since the lanes are already severely limited, so if you aren't already I would give that a try.
@lwf, Nah it's always like 60% usage on the cpu at max. It's not exactly the greatest cpu around but it's a quad core and it can handle the games I'm tryna run just fine.
@raoufsb, is there any way the airflow is being restricted or the Gpu cooler isn’t working?
I have been playing around with custom cooling options with a 580 recently and on one of my early set ups I put the fan on the wrong way and it chocked it down to 30fps or less in Pubg whereas once flipped it it 80 (but settled at 50-60 usually).
maybe benchmarks don’t run long enough for temps to be an issue?
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Would dread to think how much of a performance reduction would be seen going to the significantly narrower 4Gbps-EC2 bandwidth:
@eightarmedpet, I dont think that's the case since even on full load the GPU doesn't go beyond 60 to 65 degrees
@nando4, That's good to know and would explain why I get pretty much the same performance on Forza on medium to low settings as I do on ultra everything, always in the 20 to 30 fps range. But It's not like just this game is causing issues, even something that shoudn't be demanding at all like Yakuza 0 I cant get constant 60 fps at high to ultra settings, the GPU is always at 100% usage as well.