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post #1581 of 4340
Be careful using other timings on your memory. The memory controller on my chip degraded after one heaven run at 1750 timings on 2000. Now with stock timings I'm way lower in stable memory oc.

Also, I hate the 16.9.2 driver. It throttles way more than previous driver versions and even when going much lower on my oc I just can't find stable. I ended up formatting and going back to 16.8.2 and a custom bios. (Using test mode.) Even my memory oc is stable now. 16.9.2 is not OC friendly to my card.

I'm also getting sick of the stuck memory scaling issue. I've found that it never happens if I take further precautions. I reboot before any clock changes and i never open wattman. I only use wattmon with vrm monitoring off. However it's so tempting to make a change directly after a bench run. I sitll goof up and don't do the reboot and leave hwinfo64 in the systray. Even sometimes just using wattman and the built in monitoring is enough to cause the issue. I'm annoyed at these driver issues. After every setting change I have to run Valley to make sure I don't have the stuck memory scaling issue. I can tell within the first 3 seconds by the fps counter if I'm having the issue. My valley scores when having the issue go down to like 55.5 rather than 58 at my new lower oc. The first few fps counts are in the 51 range when I"m having the issue 54 when not. Monitoring shows correct clocks so I'm not really sure it's a "stuck memory clock" issue.

GTAV is also really really annoying on some levels. It doesn't handle crashes well. After crashing in GTAV, the next time I run GTAV it invariably gets half my fps in game. It's also just happened for no reason. I still get a full 60 fps in menus so it's not a vsync issue. When it happens my gpu power usage is also cut way down. Zero throttling even at 1400mhz. Most of the time a cold boot would fix it. This last time, I had to run in windows 8 compatibility mode once, close down and run normally. The 2nd time I re-setup my graphics options and everything was back to normal. Took a lot of trial and error to find that solution. I was very close to uninstalling it and reinstalling it again. Luckily steam backup worked for me so I don't have to re-download it if I do uninstall and reinstall. I'm back to a stable oc on the 16.8.2 driver so I shouldn't have any more lockups. Really annoying though.

1800p without frame scaling or 1440p with frame scaling seem to be the sweet spots with fxaa and everything else turned all the way up. 4k with no aa or frame scaling and vsync off is OK with one card, but the fps is around 30 so it's not as smooth as I'd like. MSAA isn't worth it as it has a huge performance hit on this title.

My 2nd waterblock and the fc terminal shipped today. I'll get my 2nd card in later this week and I'll see how crossfire works. OC wont matter as much so maybe I'll try the next stable driver version that comes along.
Edited by greytoad - 9/26/16 at 12:14pm
post #1582 of 4340
Quote:
Originally Posted by greytoad View Post

Be careful using other timings on your memory. The memory controller on my chip degraded after one heaven run at 1750 timings on 2000. Now with stock timings I'm way lower in stable memory oc.

"Cool"(Not overheating) Memory Controller and VRam can't be damaged by tight timings.
I want to be rational...but we'll see rolleyes.gif
Edited by generaleramon - 9/26/16 at 12:19pm
post #1583 of 4340
Thread Starter 
Quote:
Originally Posted by greytoad View Post

Be careful using other timings on your memory. The memory controller on my chip degraded after one heaven run at 1750 timings on 2000. Now with stock timings I'm way lower in stable memory oc.

will see, but generally degradation doesnt happen THAT fast (never heard of it happening that fast) and we dont have the ability to manipulate the voltage via software which is usually the common mode. Lowering your timings will likely just lower performance or cause crashes vs killing your Vram. As long as youre not getting bit errors, performance isnt going down, or you're not overvolting then youre fine. Likely your board or chips had issues to begin with but they got exasperated by tweaking with it. Even with high error rate and increased voltage if you set them back to stock/lower them till they dont error instead of consistently running them like that you should never see a chip degrade that quickly under normal conditions. Ram and Vram are actually fairly rugged

On another note Ive managed to be running 1375mhz timings @ 1800mhz fairly well so far on my 1750mhz hynix :]
Edited by Echoa - 9/26/16 at 12:36pm
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post #1584 of 4340
I don't think it was the ram that degraded. I think it was the memory controller. But I've lost 50mhz+ memory oc since I got my card in June, and it did happen that fast for me. The first 25mhz was from the timings. The other 25mhz have been over time since. It could just be the huge voltage offset I was using causing instability over time. I was warned not to use such a huge offset on early silicon. The timing was instantaneous though. I was using a +85mv offset at the time. I'd agree with you that that could have caused issues that were exacerbated by the timings. I'm running a custom bios right now and no offset and a lower oc for safety.

edit: I should also note that I game 30 to 40 hours a week so the card has gotten some heavy use at my oc settings.

edit2: There should be no overheating. I'm on full cover water. gpu temps in the high 50s to low 60s under heave oc and load. 30s and 40s at stock.
Edited by greytoad - 9/26/16 at 12:58pm
post #1585 of 4340
XFX is handing out some of the new LED Hard Swap fans, you can email and let them know you have one if you want a pair to check out. It would be appreciated if you mentioned that you heard it from me, it helps me out a little but if not that is okay. Here is the twitter link also for proof or if you want to message them there.

These LED Fans only work on RS and GTR versions, more information here.

Just thought that I would share cheers.gif
post #1586 of 4340
Quote:
Originally Posted by iwalkwithedead View Post

XFX is handing out some of the new LED Hard Swap fans, you can email and let them know you have one if you want a pair to check out. It would be appreciated if you mentioned that you heard it from me, it helps me out a little but if not that is okay. Here is the twitter link also for proof or if you want to message them there.

These LED Fans only work on RS and GTR versions, more information here.

Just thought that I would share cheers.gif

Aww why doesn't Sapphire do this? I'm a sucker for LEDs.
    
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post #1587 of 4340
Got three more Radeon RX 480s at $243 a pop... for a ETH operation.
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post #1588 of 4340
Hi everyone recently I bought a sapphire refference RX480 and it's very noisy and the temps are very high

So i got a cheap Prolima MK 13 and installed it. But what i see the VRms are hitting 92 degrees while gaming. Is it safe for everyday use?

I set the clocks to 1400 it is stable while gaming but when I downclock it to 1350 the vrms temps are 70-80

The fans are standart 3 pin 12cm case fans and with 1100 max rpm.

What do you suggest for improving the VRm temparature?








post #1589 of 4340
Thread Starter 
Quote:
Originally Posted by SourCrepe View Post

Hi everyone recently I bought a sapphire refference RX480 and it's very noisy and the temps are very high

So i got a cheap Prolima MK 13 and installed it. But what i see the VRms are hitting 92 degrees while gaming. Is it safe for everyday use?

I set the clocks to 1400 it is stable while gaming but when I downclock it to 1350 the vrms temps are 70-80

The fans are standart 3 pin 12cm case fans and with 1100 max rpm.

What do you suggest for improving the VRm temparature?









You need a heatsink on the VRMs
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post #1590 of 4340
Ahhh i forgot to mention that i used the standart Vram heatsink from the refference cooler

But...i guess you mean a taller heatsink?
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