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The R9 290 -> 290X Unlock Thread - Page 263

post #2621 of 4143
Quote:
Originally Posted by singh_shady View Post

Bought 2 from dabs.com, a UK retailer. They arrived last week.
Both unlockable, sold one to a forum member.

Thanks.
post #2622 of 4143
which one has a better chance: powercolor r290 or powercolor r290 OC?
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post #2623 of 4143
Has anyone noticed instability on unlocked cards?
Mine, unlocked, crashes frequently when mining - usually with a garbled pink screen.
When it is running it only achieves ~500kh/s.

If I reboot in the 290 switch position I don't crash and I get 750kh/s.

Makes me rather worried about the stability of those extra unlocked shaders.
post #2624 of 4143
Quote:
Originally Posted by jonnyapps View Post

Has anyone noticed instability on unlocked cards?
Mine, unlocked, crashes frequently when mining - usually with a garbled pink screen.
When it is running it only achieves ~500kh/s.

If I reboot in the 290 switch position I don't crash and I get 750kh/s.

Makes me rather worried about the stability of those extra unlocked shaders.

Nope mine are unlocked sapphires and they are as stable as rock. I tried mining to just see and they do 915 khs each. Not a fan of running cards that hard for hours on end. They are on water too
 
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post #2625 of 4143
Having troubles getting much of a overlock on my unlocked 290. There also seem to be little purple boxes on the (memory issue) when running the heaven bench.
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post #2626 of 4143
Quote:
Originally Posted by ehpexs View Post

Having troubles getting much of a overlock on my unlocked 290. There also seem to be little purple boxes on the (memory issue) when running the heaven bench.

You increasing the core voltage?
post #2627 of 4143
Quote:
Originally Posted by Forceman View Post

You increasing the core voltage?
I've gone up to 100 offset in Trix, but I can't get past 1200
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post #2628 of 4143
1200 is not a bad OC at all and higher than some are able to achieve. Mine tops out at 1235-1240 at +175mv before I start seeing diminishing results. After that even at 200mv it is unstable. Going to try PT1 bios later see if I can squeeze 1250 out of it.
post #2629 of 4143
Quote:
Originally Posted by The Storm View Post

Nope mine are unlocked sapphires and they are as stable as rock. I tried mining to just see and they do 915 khs each. Not a fan of running cards that hard for hours on end. They are on water too

Unless that's the very reason they were bought in the first place.... then who cares? smile.gif
Quote:
Originally Posted by jonnyapps View Post

Has anyone noticed instability on unlocked cards?
Mine, unlocked, crashes frequently when mining - usually with a garbled pink screen.
When it is running it only achieves ~500kh/s.

If I reboot in the 290 switch position I don't crash and I get 750kh/s.

Makes me rather worried about the stability of those extra unlocked shaders.

What are your settings in the miner? What are your OC settings? Lots of people pushing the OC too high which can hurt mining performance. 950/1250 is good place to start. If you can reach 1000/1500 that's the next step up. From there I think its 1150/1750, but I'm not sure on that cause I can't reach those settings.
Edited by battleaxe - 1/13/14 at 5:27am
     
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post #2630 of 4143
Quote:
Originally Posted by battleaxe View Post

Unless that's the very reason they were bought in the first place.... then who cares? smile.gif
What are your settings in the miner? What are your OC settings? Lots of people pushing the OC too high which can hurt mining performance. 950/1250 is good place to start. If you can reach 1000/1500 that's the next step up. From there I think its 1150/1750, but I'm not sure on that cause I can't reach those settings.

Thanks for the reply. I was just trying it at stock and with the 'recommended' settings on various 290/litecoin forums. Is it generally the case that the clock should be underclocked when mining? I notice a lot of people do it but had thought I'd be fine running at stock 1000mhz.

I'll try your suggestions when I'm home.
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