GTX 470 overclocking

[rounddodger]

Just playing about with afterburner and kombuster and was wondering how reliable a stability test is it? I've been reading a lot of people can't overclock the RAM even a tiny bit without sparklies/artifacts yet here I am running at 1750/3500 no issues even in 3 hours playing Crysis and am now testing a 1800/3600 o/c.

What is the GDDR5 rated at and is it different to whats in the 480 as many people seem to be gaining 2000/4000 with them.

The core/shaders I've tested up to 850/1700 with seemingly no problems other than heat management.

I'm using 1.087 voltage at the moment, I'd be interested to see what clocks fellow ocuk 470 owners are getting.

 

[stiv121]

Ive heard overclocking the RAM makes a very little difference just work on getting that core clock as high as possible

 

[rounddodger]

Testing 900/1800 now. My god these clock like beasts. 50% overclock! 61 degrees at 100% fan for testing.

 

[stiv121]

Ha, post up if its stable, looking to get 2 of these cards later this month. What kind is yours btw?

 

[rounddodger]

Think 875/1750 is my tops. 900 crashes 3dmark03 but kombuster is fine. Need to do more tests though. It's a standard Zotac 470, very happy with it.

 

[Sean_UK]

Run that overclock through OCCT with fan set to 85%'ish

I've found Kombuster to be terrible at finding stable core overclock on both 470's & 480's. What it considers to be stable; often can't even get through 3 loops of Crysis bench.

 

[RavenXXX2]

Nothing better than looping crysis or heaven bench for an hour to check stability.