Which is more likely to cause instability when gaming?

t99

Honorable
Jul 16, 2014
756
1
11,215
I was running watch dogs the other day and started alt-tab and adjusting the core clock and memory clock upwards together just testing out highest frame rate and max playable settings. After a few adjustments via afterburner I alt-tab back and move for a few seconds and get a greenish brown screen with lines on the left side forcing a restart. I know I can go move each setting independently all the way up before moving the other to figure out which one caused it.

Wondering more about things like is using alt-tab and adjusting like this safe or should you overlock and then load the game run it to see what you get then close the game adjust settings up and re-open again? In most cases which is more likely to cause an issue adjusting the core clock or memory clock? Also afterburner seems to allow me to adjust by a very huge amount and is this normal? using r9 270x it defaults to 1070 core clock allowing max of 1395 and a 1400 memory clock maxing at 1820. I have the box unchecked which allows overclocking past the official limits. I never have any issues with the card causing any other restarts outside of two times when I was adjusting the settings upwards.
 

t99

Honorable
Jul 16, 2014
756
1
11,215


do you mean overlock then run 3d mark and see if it finishes the test and once it does then go ahead and run the game? is that wide range I have on the core clock normal?
 

Jak_Sparra

Distinguished
Mar 31, 2006
519
0
19,060


Yes that is what he means. Those overclocks seem way too high as well, you need to drop them down.
 

t99

Honorable
Jul 16, 2014
756
1
11,215
Yes that is what he means. Those overclocks seem way too high as well, you need to drop them down.
[/quotemsg]

I haven't pushed it nearly that far at all as it seemed odd and i'm not trying to break anything I just got. Anyone know a link to forum explaining gpu overclocking in very high detail? I search here and do not see anything explaining it's mainly just help with situation.
 

t99

Honorable
Jul 16, 2014
756
1
11,215


I've been doing this and quickly got to the max I can run stable at. its restarts when I either hit 1200 on the core or 1700 on the memory. Whats interesting and hoping someone can explain this is that when I moved the core up from around 1170 to 1200 and ran the passmark 3d directcompute test I got a huge increase in score greater than any other increase amount per how much I moved the speed up. It made a pretty big jump up in score, but when I ran the direct x 9 complex it caused a freeze up. Why does the direct x freeze and the directcompute test had passed? Both of these test run video as well.

Is adjusting this and causing a freeze up harmful to the card or is all of this safety features put in place by the manufacturer? If I have afterburner set to stay within official limits am I in danger of permanent damage or would this pretty much only happen by wildly adjusting the voltage? When it caused a restart at 1200mhz I checked the logs after and I saw the speeds @ 1200, but then towards the end it dropped back down to the idle speeds so I assume the card has some type of safety feature which tells it when something goes wrong to reset to defaults. I am really not sure just guessing at this.
 

The Builder

Reputable
Jul 1, 2014
282
0
4,960
Whenever you run any component out of the manufacturer's specifications, you run the risk of damaging your hardware. The increased performance comes with a price. But if done right, you should have no problem.

When overclocking GPUs, it's best to take it step by step. Find the maximum overclock for your core clock. Then reset to default and find the maximum for your memory clock. Once you're finished, combine both. If unstable, start adjusting both until you're stable.