Just bought an RX580 to pair w/ i5-4690k, Get massive frame drops after 20+ minutes of gameplay

[babadankdank]

Alright, so 5 days ago I picked up this RX580 (PowerColor Red Dragon) 2nd hand from ebay to replace an old GTX 780ti that wasn't cutting it due to it's heat and power consumption.

And ever since this RX580 has been a cause of a lot of frustration...
My spec list includes:
* Msi B85M-G43 (Tried old and now latest bios) Motherboard
* 12GB mixed Corsair/Ballistic 1600MHz Ram
* i5-4690k @ 3.9MHz - 3.8MHz oc'd Avg idle tmp: 45-55c - Avg under load 60c-80c - using stock intel Cooler
* RX580 (8GB Vram) idle stats: temp: 35-50, clock 300/400MHz, 40% or sometimes no fan movement until it reaches 50c. While in game my stats are: Temps 65-75c, Clock 1350MHz (Which is good for AMD), Fans 60 - 70% before it gets loud.
* Corsair CX600 bronze PSU
* Sandisk 244GB SSD with Windows 10 July build.

I turn on my PC, nothing strange, cool temps, boot up a game, fans pick up, get into game, GPU hums, buzzes and errs, concerning, but not scary as I figure it might be coil whine, then I'm getting the great frames I'd expect...

but after 30-40 minutes it drops from 180fps to 60, then 50 and sits around there. at one point it dropped to a FIRM 40fps whenever I stood still in-game. This could be an overheating issue, but it has happened with fans at 100% and a house fan blowing into my PC... I get 40-60c temps on GPU/CPU during this wind storm method. still get crap performance.
- I've cleaned my Nvidia drivers with DDU, cleaned my AMD drivers with DDU in safe mode, switched to 17.72 July Chrimson drivers, reset bios, flashed new bios, Reinstalled Windows, monitored task manager for anomalies, downclocked the GPU, set my graphics to low quality. Only thing I have left to try is downclock my CPU or start buying and trying new parts one at a time.

Stats during Overwatch at High/Ultra settings:
https://imgur.com/a/rr8Ym

 

[vapour]

Did you delete your old GPU driver before plug in new 580?
Check dedicated Video RAM
Last resort: Reinstall OS to get rid of all software issues

 

[Sean8605]

Do you have a different GPU you can try? Did you monitor ram usage?

Its hard it seems to accuse any part in that system besides that gpu.

 

[babadankdank]

Did you delete your old GPU driver before plug in new 580?
Check dedicated Video RAM
Last resort: Reinstall OS to get rid of all software issues

I cleaned all drivers.
My vram in afterburner shows at most 6GB being used (Only played Overwatch and it says I use 1.3GB at most)
I did reinstall, but I will wipe my OS to the slate if nothing else works

 

[babadankdank]

Do you have a different GPU you can try? Did you monitor ram usage?

Its hard it seems to accuse any part in that system besides that gpu.

I don't have another GPU to test. My only option for that is start a paypal dispute and re-use my money for a new GPU.

 

[Martell1977]

First, what games are you seeing this happen in?

Second, what is the GPU and CPU usage during the times that it is holding at 40fps? Is there any stuttering or artifacts?

 

[Sean8605]

Did you delete your old GPU driver before plug in new 580?
Check dedicated Video RAM
Last resort: Reinstall OS to get rid of all software issues

I cleaned all drivers.
My vram in afterburner shows at most 6GB being used (Only played Overwatch and it says I use 1.3GB at most)
I did reinstall, but I will wipe my OS to the slate if nothing else works

Ehh.. My guess is GPU. Try putting on a hardware monitor.. And play until your fps goes down like that again.. And go and look to see whats having issues.

I dont know which one you should use.. I use Evga Precision Xoc. Im assuming you have a software to use for overclocking/monitoring etc?

 

[Karadjgne]

In most normally ventilated cases, cpu/gpu idle temps are @10°± ambient temps. But what I see straight off is you are running a 4690k under OC with an intel stock cooler. That's a big no-no. The cooler cannot handle the wattage output, although it will try to, but just ends up blowing massive amounts of heat around the case. Pulling the side of and you are still getting high idle temps with a fan blowing just further reinforces the cpu is running too hot.
Between the cpu and gpu both running in the 70+range gaming, both under OC, what you are missing is that the gpu processor is the only temp given. What you miss is the fact that the vram/VRM's on that gpu are running in the 90°+ range, and this is what's killing the fps as the gpu down clocks in order to cut heat output and/or the vram/VRM's are basically choking.

Drop all OC back to stock values and get some airflow in that case. See if that cures the fps drops.

 

[babadankdank]

First, what games are you seeing this happen in?

Second, what is the GPU and CPU usage during the times that it is holding at 40fps? Is there any stuttering or artifacts?

https://imgur.com/a/rr8Ym - these starts are after half an hour of play recently. but yesterday, when it got to 40fps I notice my GPU had 0% load and did not change until I rebooted
Overwatch. And a shit load of stuttering if I play long enough

 

[babadankdank]

In most normally ventilated cases, cpu/gpu idle temps are @10°± ambient temps. But what I see straight off is you are running a 4690k under OC with an intel stock cooler. That's a big no-no. The cooler cannot handle the wattage output, although it will try to, but just ends up blowing massive amounts of heat around the case. Pulling the side of and you are still getting high idle temps with a fan blowing just further reinforces the cpu is running too hot.
Between the cpu and gpu both running in the 70+range gaming, both under OC, what you are missing is that the gpu processor is the only temp given. What you miss is the fact that the vram/VRM's on that gpu are running in the 90°+ range, and this is what's killing the fps as the gpu down clocks in order to cut heat output and/or the vram/VRM's are basically choking.

Drop all OC back to stock values and get some airflow in that case. See if that cures the fps drops.

The OC you saw with my processor is Intel Turbo, which I've just now turned off. My cpu temp is unchanged, performance is unchanged. Even with the big fan helping get 50c on CPU and 60c on GPU In-Game I still got performance drops. I'd imagine thats as cool as I can possibly make my components under heavy load without a water cooler but thats ridiculous, if a card can't hold acceptable frames at stock and it's not a heating issue by tell of my monitoring tools... I'm not sure, but putting a water cooling system on a troubled card seems like buying a new seat cover for a wobbly chair

 

[Martell1977]

It almost sounds like the card isn't getting the power it needs to perform. Can you by change try a different PSU, or at the least, double check the power connections to make sure they are well connected. The Corsair CX PSU's were pretty low quality for a long time, only the newer CXM models are of good quality.

I'm reluctant to say this, but you might check the BIOS version of the card itself and see of there is a newer one available. This could also be an issue, though, the lack of power sounds more likely.