Overclocking help

[Yabba]

Hello so I recently built a pc with this graphics cardhttp://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1157&lid=1&pid=1679&leg=0 and I get artifacts when I overlock it to around 1170 mhz in core clock. The tempature remains under 65 degrees celsuis and I am using a 750 watt power supply, what could be causing this?

 

[SnowyGamester]

I'm gonna take a wild guess and say the overclocking it causing it. How well a GPU overclocks varies from card to card and it's possible you've ended up with one that lacks major potential.

 

[ShinyCharizard]

Yeah I think you've just found the limits of your card.

 

[OneCatch]

As has been posted, it's just the limit of the card. You might find that you can get a higher OC on other games (for example I start artifacting horribly on Crysis 2 long before I get any on stress tests or other games), but basically you've hit the limit.

Out of interest, have you changed the memory clock or voltages at all, or is it just the core clock you've altered?

 

[Yabba]

As has been posted, it's just the limit of the card. You might find that you can get a higher OC on other games (for example I start artifacting horribly on Crysis 2 long before I get any on stress tests or other games), but basically you've hit the limit.

Out of interest, have you changed the memory clock or voltages at all, or is it just the core clock you've altered?

Just core clock, I am scared of ruining my card with voltage and memory overheating

 

[OneCatch]

As has been posted, it's just the limit of the card. You might find that you can get a higher OC on other games (for example I start artifacting horribly on Crysis 2 long before I get any on stress tests or other games), but basically you've hit the limit.

Out of interest, have you changed the memory clock or voltages at all, or is it just the core clock you've altered?

Just core clock, I am scared of ruining my card with voltage and memory overheating

Ok, well in that case it is most likely that you've hit the card's limit then, at least for whatever your're using for artifact testing.
On the bright side, you've got about a 17% OC, which isn't that shabby.

Might be worth trying a few other games at 1170 just to see if you artifact equally on all of them.
If not, you can use something like MSI afterburner to set different OC profiles for different games, depending at what threshold you get artifacting.