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post #1191 of 4151
Quote:
Originally Posted by Johny Boy View Post


Changed HDMI cable and it works flawlessly, so it was faulty cable on RX but it's perfect on Gtx card.
Ok now how much OC should I expect on Reference card ?

 

That's why I always start with the stupid stuff first...sometimes you would be surprised what fixes it.

 

Not sure how much you have read about these cards but there isn't a huge margin for overclocking.  

 

I would say average is around 1350 core and 2125 on the VRAM.  Some people have better luck with undervolting the core to achieve good speeds...you will have to play around with it a little bit to see exactly how yours performs.  Take some time and search through this thread and you will find good information.  

 

Personally I never tried undervolting my card...just went straight to giving the small amount of extra voltage that is available in WattMan and started overclocking.  My card has no troubles cruising along at 1400/2250 for games/benchmarks etc.  

 

I quickly removed my reference cooler and mocked up a Kraken to help keep temperatures in check.  If you go down this road, then you'll need to craft something for the VRMs as they will get much too hot if they are left bare and you will have stability problems post haste.  

 

I ultimately ended up putting a full cover block on mine to keep temps nice and eliminate any noise from the equation. 

 

Reference Cooler Performance:  http://www.overclock.net/t/1605802/official-radeon-rx480-470-460-owners-club/40_20#post_25355009

 

Initial Kraken Setup: http://www.overclock.net/t/1605802/official-radeon-rx480-470-460-owners-club/160_20#post_25379963

 

Custom VRM Heatsink:  http://www.overclock.net/t/1605802/official-radeon-rx480-470-460-owners-club/160_20#post_25380444

 

Full cover waterblock:  http://www.overclock.net/t/1605802/official-radeon-rx480-470-460-owners-club/320_20#post_25416201

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post #1192 of 4151
Quote:
Originally Posted by KarathKasun View Post

Yeah, different HDMI signaling or driving strength is probably at fault.

~1350 with reference cooling, its going to be loud.

~1266 without throttling actually can give a 10% boost without ramping the fans to wildly high/loud speeds. Mostly just requires setting the power limit to +50.

It all really depends on silicon lottery. For 1266MHz i only need 1.025V for perfect stability (never crashed). At these settings it rarely throttles with +0% power target. For games this is only the case when some extra compute is thrown into the mix (e.g. dynamic water in ROTTR) and the ALUs really get loaded. The 1340 MHz overclock at 1.1V had also very little throttling at +20% power target. I had to use 2500 rpm on the reference cooler then. I tink the limit for the reference cooler is somewhere between +20% and +25% power target. After that it gets to loud for me. The difference in clocks is less than 6% and in fps its even less. Whenever i dont need that last bit of performance i go back to stock clocks with undervolt and stay below 2000 rpm at +0% power target. If you are unlucky, you need +20% power target to get unthrottled stock performance.
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post #1193 of 4151
Quote:
Originally Posted by Johny Boy View Post

Changed HDMI cable and it works flawlessly, so it was faulty cable on RX but it's perfect on Gtx card.
Ok now how much OC should I expect on Reference card ?

The Reference cooler it's not the best solution for OC - For example with this mod leaving the original backplate get 1400 mhz @ 1.23 v - It's silicon lotery I need that voltage core and 2135 mhz ram with 62°C of Core and 90° of VRAM temp.-
In my case per two video cards.-

The Water-cooling fan its controled by the video card with a custom curve, and the "general" fan its fixed at 1500 rpm to move the air between and down the VRM temp



post #1194 of 4151
Quote:
Originally Posted by Gladi View Post

Hey any XFX RX480 Black GTR owners know how to work around the "siltent" mode?
My card when iam o ndesktop, sometimes boosts the fans to cool down and then stops the fans again, rinse repeat. I would not mind if the fans keep running at a lower speed constantly.

Yes, it's really easy: custom fan profile in Afterburner. Set the lowest speed to 30% and you'll have about 700RPM fan speed as a floor, and it will never stop.

The fans are loud enough that you may want a dead spot around the normal gaming temperature region, but I've found this to work well:



Interestingly, I've noticed practically no reduction in idle temperatures with such low fan speeds. But that's probably because I have two fans blowing right on the card.


EDIT:

If you want the 'dead spot' behavior, just double click on one of the fan setting points, the graph will go square. This will stop the constant changing of fan speeds.

I find 50% at 70C to be the sweet spot, my next step up (to 60%) isn't until 80C.
Edited by looncraz - 9/8/16 at 5:15pm
post #1195 of 4151
I've "learned" a bit by overclocking in the last few weeks, but I have a concern and I would like to ask you because I can't find a definitive answer anywhere. I know that everyone is responsible for his own actions smile.gif So here it goes, I have an RX470 8GB Nitro+ I know that too much voltage it may/will shorten the lifespan of the GPU but I did a stupid mistake, I accidentally left the voltage slider to +139 in trixx, I don't know how I've missed that, but it was a stupid mistake to make because I also used wattman and long story short, I've noticed the temps were higher than usual (79-80) on long sessions with custom fan curve and than I discovered it, my main concern is did I f* things up by leaving it like that for a week or it's no harm done. My stock voltage on wattman is 1168mV + 138mV that's 1306mV ..... The temps were in check though. Anyway please can someone tell me if I need to return the card and get a new one or it's fine like this.... Next time I promise I'll not use 2 different softwares for oc smile.gif
post #1196 of 4151
Quote:
Originally Posted by looncraz View Post

Yes, it's really easy: custom fan profile in Afterburner. Set the lowest speed to 30% and you'll have about 700RPM fan speed as a floor, and it will never stop.

The fans are loud enough that you may want a dead spot around the normal gaming temperature region, but I've found this to work well:



Interestingly, I've noticed practically no reduction in idle temperatures with such low fan speeds. But that's probably because I have two fans blowing right on the card.


EDIT:

If you want the 'dead spot' behavior, just double click on one of the fan setting points, the graph will go square. This will stop the constant changing of fan speeds.

I find 50% at 70C to be the sweet spot, my next step up (to 60%) isn't until 80C.

thank you!!!
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post #1197 of 4151
Quote:
Originally Posted by dzivana View Post

I've "learned" a bit by overclocking in the last few weeks, but I have a concern and I would like to ask you because I can't find a definitive answer anywhere. I know that everyone is responsible for his own actions smile.gif So here it goes, I have an RX470 8GB Nitro+ I know that too much voltage it may/will shorten the lifespan of the GPU but I did a stupid mistake, I accidentally left the voltage slider to +139 in trixx, I don't know how I've missed that, but it was a stupid mistake to make because I also used wattman and long story short, I've noticed the temps were higher than usual (79-80) on long sessions with custom fan curve and than I discovered it, my main concern is did I f* things up by leaving it like that for a week or it's no harm done. My stock voltage on wattman is 1168mV + 138mV that's 1306mV ..... The temps were in check though. Anyway please can someone tell me if I need to return the card and get a new one or it's fine like this.... Next time I promise I'll not use 2 different softwares for oc smile.gif

No no problem that in practice it's 1.29v I use 1.33 one time it's AMD man jajaja
post #1198 of 4151
Sorry if this has been talked about previous ...

I have the rx480 sapphire,the fan spins at full speed even when its not being used very much ... Is this a known problem and any fixes available ?

Thanks thumb.gif
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post #1199 of 4151
Quote:
Originally Posted by dzivana View Post

my main concern is did I f* things up by leaving it like that for a week or it's no harm done. My stock voltage on wattman is 1168mV + 138mV that's 1306mV ..... 

Some people have been running that high, or higher, since they figured a way to do it. We just don't know where the limits are for this GPU, but it seems to be fairly high... has anyone actually overvolted and destroyed a Polaris 10 GPU yet?

My concern is insulator breakdown - FinFet is more sensitive to this than planar (more sensitive to ESD as well). If you didn't have any instability problems, though, then you're probably good to go.
post #1200 of 4151
Quote:
Originally Posted by sands View Post

Sorry if this has been talked about previous ...

I have the rx480 sapphire,the fan spins at full speed even when its not being used very much ... Is this a known problem and any fixes available ?

Thanks thumb.gif

It's not a problem, it's by design. The Afterburner solution I posted just just a couple posts above should work for you as well, though you may need to find the bottom.

You will want to have a load on the GPU to ensure the fans are spinning, because setting the profile as I did above won't always cause the fans to spin up.
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