[IMP] Overclocking, AMD GPU's 144hz bug

[CoolaxGaming]

Hello!

 

After testing for a while, I grew curios. No matter what voltage I used, I could never get past 1175mhz on my core for my Lightning R9 290X. Adn 1170 was with +200 on core, I contacted @Wingfan Asking him how good his Lightning oc was, found out it was a lot more with a lot less volts. 

I grew curious, because whenever I went to 1175, my screen got lines running across. When with 10 less volts on 1170, the same thing happened. I noticed my gpu was not underclocking like its supposed to.

i had noticed the exact same things on my brothers 285 and my HD 7850, series card .The 285 from I think Visiontek. 

Now the thing is, I had seen a change when I bought be 144hz VG248QE monitor. I had to decrease my 7850 clock and Increase the voltage for it to pass the OCCT test. This test was passed a week before I switched to 144hz.

I serached the AMD 144hz and saw some problems. And now, running 120hz, I need +50ish to get to 1175. I tried it on 144hz but got artifacts, I tried Displayport, but still the same  problem. Other 144hz monitor from Benq, still same problem and it got fixed by 120hz

 

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Bottom line, every AMD card has problem with 144hz when overclocked. If you see artifacts with 144hz, dont increase your voltage or decrease your clock speed, set your refresh rate to 120hz and you will see HUGE increase in stability. It will downclock and you wont see lines across your monitor! 

 

I marked this as important because I feel someone might be out there crying they got a BAD silicon lottery when its the 144hz bug.

 

If you guys have more questions feel free to ask

[msvelev]

Can someone else confirm this? It's really interesting.

Coming from "LTT's BIGGEST Radeon Fanboy" I don't expect it to be made up, but still.. different factors may apply.

[CoolaxGaming]

Can someone else confirm this? It's really interesting.

Coming from "LTT's BIGGEST Radeon Fanboy" I don't expect it to be made up, but still.. different factors may apply.

If I am a Radeon fanboy, why am I posting a problem which AMD has not bothered to fix?

[msvelev]

If I am a Radeon fanboy, why am I posting a problem which AMD has not bothered to fix?

My point is, if a "fanboy" would admit it, it must be true

 

Is your title sarcastic?

[CoolaxGaming]

My point is, if a "fanboy" would admit it, it must be true

 

Is your title sarcastic?

Nvm, I misunderstood your question.

No its not #AMDFORLIFE

[D2ultima]

Well I can tell you for certain that cards require more power to drive higher refresh rates, but they shouldn't require THAT much for a jump from 120Hz to 144Hz. I know when I got my laptop I would artifact like crazy at 120Hz (regardless of in-game FPS) because my vBIOS wasn't supplying enough power to my GPUs. I had to mod my vBIOS to fix that.

 

But again, 120Hz to 144Hz should not be THAT bad.

[CoolaxGaming]

Well I can tell you for certain that cards require more power to drive higher refresh rates, but they shouldn't require THAT much for a jump from 120Hz to 144Hz. I know when I got my laptop I would artifact like crazy at 120Hz (regardless of in-game FPS) because my vBIOS wasn't supplying enough power to my GPUs. I had to mod my vBIOS to fix that.

 

But again, 120Hz to 144Hz should not be THAT bad.

I think its a driver bug. I get trrible artifacts, my screen goes blurry and stuff.

See this - http://forums.amd.com/game/messageview.cfm?catid=440&threadid=176300

[D2ultima]

I think its a driver bug. I get trrible artifacts, my screen goes blurry and stuff.

See this - http://forums.amd.com/game/messageview.cfm?catid=440&threadid=176300

I have a friend with a 1080p 144Hz ASUS monitor and a R9 290 and he has no flickering issues... I asked him to check if he could OC with less voltage at 120Hz over 144Hz but he isn't home right now I think.

[CoolaxGaming]

I have a friend with a 1080p 144Hz ASUS monitor and a R9 290 and he has no flickering issues... I asked him to check if he could OC with less voltage at 120Hz over 144Hz but he isn't home right now I think.

Sure. I would love to see the result. Tell him to oc till the card cant handle it. Including the memory. 

And ask him when he presses apply, does any part of his screen have lines or flicker

[D2ultima]

Sure. I would love to see the result. Tell him to oc till the card cant handle it. Including the memory. 

And ask him when he presses apply, does any part of his screen have lines or flicker

He already does that to benchmark because he was trying to beat my laptop in Unigine Heaven and stuff. But he was at 144Hz if I remember right; if he drops to 120 he might be able to push further? I don't know. We'll see.

[CoolaxGaming]

He already does that to benchmark because he was trying to beat my laptop in Unigine Heaven and stuff. But he was at 144Hz if I remember right; if he drops to 120 he might be able to push further? I don't know. We'll see.

Yup, also can you ask him to run OCCT error check and give me the results of 30 mins with 120hz and 144hz?

[D2ultima]

Yup, also can you ask him to run OCCT error check and give me the results of 30 mins with 120hz and 144hz?

Well I linked him this thread entirely and asked him if he can check it, so he should be seeing most of this.

[CoolaxGaming]

Well I linked him this thread entirely and asked him if he can check it, so he should be seeing most of this.

Thanks!

Remember if you are seeing this, OC till you reach the 90 degrees. 

[msvelev]

Sure. I would love to see the result. Tell him to oc till the card cant handle it. Including the memory. 

And ask him when he presses apply, does any part of his screen have lines or flicker

Well if he OC untill the card can't handle it.... isn't that the problem lol?

[CoolaxGaming]

Well if he OC untill the card can't handle it.... isn't that the problem lol?

You get the max oc. Till the card cant handle it, meaning right before it. Technically "The best oc possible with max stability"

"

[rtpb5642]

Interesting, i have a 780, the card cooks at 144hz so i use 120

[D2ultima]

Thanks!

Remember if you are seeing this, OC till you reach the 90 degrees. 

He won't hit 90. He would get black screen shutdowns before he hit that temp, from what I remember.

[CoolaxGaming]

He won't hit 90. He would get black screen shutdowns before he hit that temp, from what I remember.

Hmm well tell him to take till his max.

Really surprised my Lightning is perfectly stable at 96 Degrees before it starts throttling

[rtsurfer]

Its not really a bug, it's complicated.

 

It kind of goes as, the Higher the your refresh rate, the more your Overclock is limited. You can probably hit get a higher overclock if you turn your refresh rate down to 60Hz. There are some people who turn their monitor down to 30Hz to get max OC on their AMD cards while benching.

 

It's not a bug since it works perfectly fine on stock, its when start pushing High Overclocks, that is when it creates screen flickering.

 

And a Lightning @ 96C. Lol..

How about you set up a proper fan curve first.

[CoolaxGaming]

Its not really a bug, it's complicated.

 

It kind of goes as, the Higher the your refresh rate, the more your Overclock is limited. You can probably hit get a higher overclock if you turn your refresh rate down to 60Hz. There are some people who turn their monitor down to 30Hz to get max OC on their AMD cards while benching.

 

It's not a bug since it works perfectly fine on stock, its when start pushing High Overclocks, that is when it creates screen flickering.

 

And a Lightning @ 96C. Lol..

How about you set up a proper fan curve first.

No that is during when the room temp is really high and I was doing Furmark @1300mhz

 

Whatever you say, 120 hz to 144hz shouldnt show THAT much difference

[rtsurfer]

No that is during when the room temp is really high and I was doing Furmark @1300mhz

Whatever you say, 120 hz to 144hz shouldnt show THAT much difference

Shouldn't be running Furmark on any GPU.

But that is your choice.

As for the jump, believe me.

Whatever your max overclock is @ 120Hz, set your monitor to 60Hz & I am pretty sure you will be able to squeeze out more.

[CoolaxGaming]

Shouldn't be running Furmark on any GPU.

But that is your choice.

As for the jump, believe me.

Whatever your max overclock is @ 120Hz, set your monitor to 60Hz & I am pretty sure you will be able to squeeze out more.

Tried it it made no difference

[rtsurfer]

Hmmn.

What us your current max & what are your temps running your test.

And also what are you using to test your over clock.