Furmark passes fine, but Heaven crashes instantly

[ScribbleMike]

Just as the title says, I have an XFX DD 270x OCed to 1200mhz and I can complete a furmark burn in test no problem but any time I try to load up heaven in crashes and my screen turns red and my PC restarts, any fixes? Should I trust furmark over Heaven or Valley?

 

[modernwar99]

It means your OC is unstable. Try lowering your clock speeds or raising voltage slightly. The red screen is an artifact most likely caused by too high of clock speeds. If heaven benchmark crashes, then games will too. In my experience, heaven and valley have the largest tolerance to overclocks. Valley can handle a 1300Mhz OC on my GPU, but any game I try freezes and crashes itself along with my drivers. Also what is your PSU?

 

[ScribbleMike]

It means your OC is unstable. Try lowering your clock speeds or raising voltage slightly. The red screen is an artifact most likely caused by too high of clock speeds. If heaven benchmark crashes, then games will too. In my experience, heaven and valley have the largest tolerance to overclocks. Valley can handle a 1300Mhz OC on my GPU, but any game I try freezes and crashes itself along with my drivers. Also what is your PSU?

My psu is a Corsair RM 1000.
I use MSI Afterburner to OC and have the power regulation to +20%
At 1150mhz the benchmark runs smooth and fine
but at 1200mhz it crashes instantly
Should I try to OC my memory?

 

[modernwar99]

Raising the power limit in afterburner doesn't change the actual voltage. Raise the core voltage by 10mV and try then. Also keep an eye on GPU temps while running stress tests if you don't already. If the memory clock is stock, raising it won't correct the problem, it will most likely make it worse. Also the memory clock only raises performance in synthetic benchmarks, it has no effect on FPS in games.

 

[ScribbleMike]

It means your OC is unstable. Try lowering your clock speeds or raising voltage slightly. The red screen is an artifact most likely caused by too high of clock speeds. If heaven benchmark crashes, then games will too. In my experience, heaven and valley have the largest tolerance to overclocks. Valley can handle a 1300Mhz OC on my GPU, but any game I try freezes and crashes itself along with my drivers. Also what is your PSU?

Raising the power limit in afterburner doesn't change the actual voltage. Raise the core voltage by 10mV and try then. Also keep an eye on GPU temps while running stress tests if you don't already. If the memory clock is stock, raising it won't correct the problem, it will most likely make it worse. Also the memory clock only raises performance in synthetic benchmarks, it has no effect on FPS in games.

My card is unable to have it's core voltage changed. Any way to change that?

 

[modernwar99]

Go into settings on afterburner, and in "general" you should see an option that says "unlock voltage control", check that box and click ok.

 

[ScribbleMike]

Go into settings on afterburner, and in "general" you should see an option that says "unlock voltage control", check that box and click ok.

I've done that a while ago and I still cannot change the core voltage. But I have heard my version is already at the "max voltage" it can go to

 

[modernwar99]

Can you raise the power limit any further?
If not, the only other options would be to (I don't recommend doing either of these):
1) Edit your BIOS to allow a higher voltage or unlock it completely.
2) Download an unlocked version of your BIOS and flash your current BIOS with that one.
As I said before I don't recommend either of those because they can "brick" your GPU if the flash isn't successful, and I don't take responsibility if you choose to flash your BIOS and something goes wrong.

 

[ScribbleMike]

Can you raise the power limit any further?
If not, the only other options would be to (I don't recommend doing either of these):
1) Edit your BIOS to allow a higher voltage or unlock it completely.
2) Download an unlocked version of your BIOS and flash your current BIOS with that one.
As I said before I don't recommend either of those because they can "brick" your GPU if the flash isn't successful, and I don't take responsibility if you choose to flash your BIOS and something goes wrong.

okay thanks, once I get an 880 I guess I'll screw around with the 270 see if I can push it farther.
I did recently open it up though and replaced the thermal compound with Arctic Silver 5, should that do anything good for an overclock?

 

[modernwar99]

Might lower the temps 2-3C, but I wouldn't recommend it in the future because it voids the warranty on most cards.