Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/11/29 06:49You go and start the Catalyst control center, then display panel and check alternate DVI operational mode. That should normally solve your issue. So can you try that and let us know?
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Mavke
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/11/29 11:12Fastmix wrote: You go and start the Catalyst control center, then display panel and check alternate DVI operational mode. That should normally solve your issue. So can you try that and let us know? Thanks for the tip mate, I just plugged in the Radeon HD 4850 again and well in mine that was already enabled. I will see if I still have the same small corruption or not if else I will see what it deos when I disable it. Thanks mate!
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lumo
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/11/29 18:52Okay, it was already checked! I disabled it now, see if its gone, will take some time, as the flicker isn't always here. Will let you know if this one worked. By the way, I am running 2560x1600 at 60Hz on desktop and 1280x800 on games most of the time, as I was too lazy to test higher resolution and tweak settings at higher resolutions.
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Mavke
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/11/30 13:06lumo wrote: Okay, it was already checked! I disabled it now, see if its gone, will take some time, as the flicker isn't always here. Will let you know if this one worked. Great, I actually done the same thing and we will see what it gives. But on mine it is less visible, so yes keep us posted on if it made a change or not. Thanks.
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lumo
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/12/02 06:55Okay, tested for two days, a few hours per day as did not have more time yet. By now, all fine, no more flickering. Curious and in hope it keeps this way. Will post here if the flickering reappears! Thanks for the help!
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/12/02 09:07lumo wrote: Okay, tested for two days, a few hours per day as did not have more time yet. By now, all fine, no more flickering. Curious and in hope it keeps this way. Will post here if the flickering reappears! Thanks for the help! Thanks for sharing your feedback, I am still running at well my Radeon HD 4850 to see if it makes a difference but not much at home so will also share later on my findings. Thanks and yes let us know if it would reappear.
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lumo
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/12/09 07:20Okay, I am using this setting for a week now and I did not notice any more of the flickering! Howvere if it reappears, though I doubt that I will post it here again. So, thanks again for the nice tip!
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Mavke
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/12/09 08:30Great stuff, and once again thanks for sharing your feedback after about a week as that is really nice to show what you experienced after going for the tip given. Well I am glad I know this now as well, so thanks again!
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mono
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/12/21 16:21Mavke wrote: Euh, sorry but you wrote that you flashed it to the PowerColor PCS version and that means you overclocked it to 825/3700MHz, that is where I picked it up. And what if you run the fan speed faster now does that still let the red dots go away? Yeah, I flashed it with an overclocked BIOS, but I also did the tests with it downclocked to reference levels and still got some red dots every once in a while. I also discovered that when you push the memory frequency up a little, apply it in the control center and back again, the red dots go away, so my guess is memory issue most certainly, but doesn't seem related to temperature.
I also noticed that these dots only appear in specific moments, like gaming animations, flash videos or others movies. Maybe it has something to do with memory voltage too when the card jumps between 2D, low 3D and 3D states. But I don't know...
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Mavke
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Re:Sapphire Radeon HD 4870 with 1GB, and red flickering pixels? - 2008/12/21 19:24mono wrote: I also noticed that these dots only appear in specific moments, like gaming animations, flash videos or others movies. Maybe it has something to do with memory voltage too when the card jumps between 2D, low 3D and 3D states. But I don't know... Well if that is the case you better just return the card and get a replacement, cause that doesn't sound very good. So if it was me having these issues I would have already gone back to the store and get a new one. Cause if it does the same at default clock speeds it is just not normal.
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