XFX rx480 oc

[chr0nos]

Hello All

Im trying to OC my card but the card refuses to go beyond 110W TDP, I can increase gpu voltage but the card throttles heavily when it hits 110W.

Already ran DDU several times, flashed a moded bios with 500W limit, Original bios is the same cant pass the 110W TDP wall.


I remember the card going to 150-180W no issues, now it wont go beyond 110W.

EDIT: The Power limit setting seems to be non functional/ignored.

 

[Taraquin]

Have you used the bios-switch? Silentbios?Is it a 6+8-pin power-setup? Are all working correctly? Could sound like only the 6-pin gives it power.

What happends if you undervolt? What speeds does the card run at when hitting 110W? My RX 580 I ran with a silentmod, it was totally stable at 1264MHz@950mv and consumption was about 90W avg, at 110W I could run it around 1320-1340@1000mv-ish.

 

[chr0nos]

currently modded bios

Card only has 1 8-pin connector, before it could sit at 150w-160w Power limit no problems, now peaks 135W for a sec and drops below 110W heavily throttling to stay below 110W

 

[Vya Domus]

What are the max temperatures, fan speed and what sort of load do you put on it.

 

[Taraquin]

I add to the above questions: What are the voltages and avg mhz while gaming/hitting 110W? Have you trieed changing the powercable? Please try to test what I suggested in first answear

 

[chr0nos]

Farcry 5, Powercable is brand new

 

[Taraquin]

Try to set voltage to 1050mv and see if mhz climbs. Do you have stock bios on switch no.2? What happends if you use that?

 

[Vya Domus]

79C is getting pretty close to the temperature limit. Try putting the fan 100% and see if the same thing happens.

 

[TheMadDutchDude]

It’s throttling due to temps.

 

[chr0nos]

hmm no, Max Temp is 90°C then it could throttle, 2nd bios switch does the same thing, lowering voltage crashes the card at 1315mhz

EDIT: Stock (position 1) and mod bios (position 2) behave the same way

 

[Vya Domus]

If your presumption that there is something wrong with the power limit is right this must tie in with temperatures as well.

Think about it, your card goes up to only 110W yet it reaches 79C. Something is not right, that's not a weak cooler either.

 

[chr0nos]

If your presumption that there is something wrong with the power limit is right this must tie in with temperatures as well.

Think about it, your card goes up to only 110W yet it reaches 79C. Something is not right, that's not a weak cooler either.

Fan speed was at AUTO setting when it reached 79C, cant test ATM im not at home

 

[Vya Domus]

It just seems strange that at that power usage the temperatures are that high, even on auto fan speed. This is not entirely relevant but if I limit my 1080 to the same sort of power limit it never goes over 75C and it has a crappy blower cooler.

 

[chr0nos]

Done another test (Farcry 5 Benchmark)

FAN Speed 100% Max temp reached 63C, I am 100% sure its not a thermal issue.


Edit: Bios is modded to 225W TDP max +50% Power limit on drivers should hit at least 200W peak,

 

[madness777]

I've had this problem while modding a bunch of RX470 cards. Happened twice.
What solved it for me was doing a completely fresh driver install with the help of DDU.
I'm guessing there are some registry entries that can mess with the TDP.

 

[chr0nos]

already done that multiple times (DDU)

 

[madness777]

Ah.
Next thing that comes to mind is completely removing afterburner and trying Global WattMan see if that has any effect.

 

[chr0nos]

Ah.
Next thing that comes to mind is completely removing afterburner and trying Global WattMan see if that has any effect.

Just tried, same thing.

 

[madness777]

Unusual behavior. Do you happen to have another PC where you can test this RX480 in?
See if it's the card itself locking down the TDP.
And it seems like your card is all over the place looking at that GPU PowerDraw graph in GPU-Z

 

[chr0nos]

Unusual behavior. Do you happen to have another PC where you can test this RX480 in?
See if it's the card itself locking down the TDP.
And it seems like your card is all over the place looking at that GPU PowerDraw graph in GPU-Z

Looks like that because its hitting the 110W wall constantly and throttling trying to stay as close as it can to TDP

Edit: pretty much locked to 110W no matter what. I dont have another PC to test sadly.

 

[madness777]

Overall it doesn't look like it's behaving normally

The powerlimit is usually pinned while the GPU Clock fluctuates to keep it there.
This is my power modded RX470 (+0mV, +50% TDP) running FireStrike stresstest. Notice the voltage!
This is how your RX480 probably looked like before you started experiencing this.
It looks as if your card is heavily bottlenecked and we wanna figure out if it's the software doing it, or the card itself.

 

[chr0nos]

As I said a million times, the card is locked to TDP, dont know what to do anymore

 

[eidairaman1]

@MrPotatoHead @Final_Fighter

 

[Taraquin]

Seems your card is broken somehow. I would undervolt as much as I could and use the highest core clock possible with that tdp if I were you. You are not missing out on much with overclocking. My 580 did 1411@stock and consumed 160W avg, undervolting and downclocking to 1264@950mv cost me 5% performance and consumption dropped to 90W. Card went completely silent during liad with temp of 60C from 75C stock and a bit noisy. In best case overclocking from 1300MHz could at best give you 3% performance at 50% higher consumption.

 

[MrPotatoHead]

What psu do you have, can you try another 8 pin cable on it