HD 7870 GHz Edition Overclocking Problems

[Bussinateur]

Hi,

 

My HD 7870 GHz 2GB from Gigabyte cannot run on its stock speeds (Core clock 1100Mhz). I have to underclock it to 1050Mhz in order to run benchmarks and games. 

 

When running at stock, it will crash and blue screen and then automatically restart. 

 

I am already running my GPU at +20% Power Limit on MSI Afterburner.

 

Can anyone help me to run this at stock and possibly even overclock it a bit?

 

Here are my specs:

 

CPU: INTEL i7 3770

MOTHERBOARD: ASUS H77

RAM: 16GB

STORAGE: 256GB SSD + 2TB HDD

GPU: HD 7870 GHz 2GB

PSU: Corsair CX500M

CASE: Fractal Design Arc Midi R2

CPU COOLER: Corsair H80i

 

 

[Guest]

Lower power limit.

[Sauron]

Has it always had that problem? Have you tried undervolting it a bit?

[Bussinateur]

Lower power limit.

 

Would that make the card even more unstable?

[Bussinateur]

Has it always had that problem? Have you tried undervolting it a bit?

 

Yeah since Day 1, but I just shrugged it off for a while. 

 

Does undervolting help the card achieve a better clock speed? Btw is my PSU strong enough?

[Guest]

Would that make the card even more unstable?

It should be most stable on default and thats +0%.

Why did you overvolted it in first place?

[Bussinateur]

It should be most stable on default and thats +0%.

Why did you overvolted it in first place?

 

I always thought that overvolting will produce better clock speeds lol.

I tried running it at +0% before and it still had the same crashes btw

[Guest]

I always thought that overvolting will produce better clock speeds lol.

I tried running it at +0% before and it still had the same crashes btw

It does allow higher clocks until gpu can handle that voltage. In your case it looks like it cant handle it.

Try to undervoltage it. Did you overclocked memory too?

[Bussinateur]

It does allow higher clocks until gpu can handle that voltage. In your case it looks like it cant handle it.

Try to undervoltage it. Did you overclocked memory too?

 

Okay I will try undervolting it right now. No I didn't even dare touch memory clocks. 

 

Does memory clock influence core clocks? And does it boost performance in games?

[das affe]

It does allow higher clocks until gpu can handle that voltage. In your case it looks like it cant handle it.

Try to undervoltage it. Did you overclocked memory too?

i do not know why he should undervolt it. it should not give better stability (atleast at standardspeeds). overvolting should. and to the op: the powersupply is big enough. I would rma that card. i had a sapphire 7870 ghz and it ran 1250/1250 i think (could be totally wrong) is the card running with good temperatures? 

[Guest]

i do not know why he should undervolt it. it should not give better stability (atleast at standardspeeds). overvolting should. and to the op: the powersupply is big enough. I would rma that card. i had a sapphire 7870 ghz and it ran 1250/1250 i think (could be totally wrong) is the card running with good temperatures? 

If you push 5 volts on gpu it should give you even better overclock? It does not work like that....

[Guest]

Okay I will try undervolting it right now. No I didn't even dare touch memory clocks. 

 

Does memory clock influence core clocks? And does it boost performance in games?

It does influence but if you cant get stock clocks working than dont even dare overclocking memory

[das affe]

If you push 5 volts on gpu it should give you even better overclock? It does not work like that....

i am not new to this. but why should he give it less voltage than stock to acheive a stable underclock. 

Maybe the card is giving not enough voltage from the start, then this would make it worse. 

RMA

[Guest]

i am not new to this. but why should he give it less voltage than stock to acheive a stable underclock. 

Maybe the card is giving not enough voltage from the start, then this would make it worse. 

RMA

I didn't say that it will be stable I said it should be. If its still not working after that than he should rma it.

[Sauron]

Yeah since Day 1, but I just shrugged it off for a while. 

 

Does undervolting help the card achieve a better clock speed? Btw is my PSU strong enough?

 

You should probably have rma'd it. Changing the voltage a little can sometimes improve stability. If it's too high or too low you're more likely to experience crashes. Your psu is not the problem, you could comfortably power an R9 290x with it.

[Bussinateur]

Okay so here is the update:

 

I tried undervolting my gpu, and it worked. But the thing is, the performance actually went down a lot. Unigine Valley decreased by 300 points when undervolted. 

The strangest thing is that my undervolted clock speed is higher than my overvolted one. (1100Mhz with -20% Power vs 1050Mhz with +20% Power).

 

What the heck?

[ApolloX75]

Hi,

 

My HD 7870 GHz 2GB from Gigabyte cannot run on its stock speeds (Core clock 1100Mhz). I have to underclock it to 1050Mhz in order to run benchmarks and games. 

 

When running at stock, it will crash and blue screen and then automatically restart. 

 

I am already running my GPU at +20% Power Limit on MSI Afterburner.

 

Can anyone help me to run this at stock and possibly even overclock it a bit?

 

Here are my specs:

 

CPU: INTEL i7 3770

MOTHERBOARD: ASUS H77

RAM: 16GB

STORAGE: 256GB SSD + 2TB HDD

GPU: HD 7870 GHz 2GB

PSU: Corsair CX500M

CASE: Fractal Design Arc Midi R2

CPU COOLER: Corsair H80i

I had an XFX 7870 that did this exact thing. It would artifact and wouldn't run at the factory speeds, had to underclock it. Turned out to be a bad card.

[Airwolf1984]

I had a stable overclock of 1150/1350 on my Asus HD7870-DC2-2GD5-V2. I set the power limit to +20% and left the voltage as is.

[Bussinateur]

I had a stable overclock of 1150/1350 on my Asus HD7870-DC2-2GD5-V2. I set the power limit to +20% and left the voltage as is.

 

That is overvolting