3K worth of mining equipment did it all fail?

[EpicBacon]

I OC'd all my 6950s now to 840mhz and 20% extra power on the catalyst control center. I wish I can clock them higher, they are stable as a rock, I am getting between 300mhash/s - 325mhash/s per seconds on each card at these settings. Temps are high 60's-c Any way I can push them harder?

I'm assuming 840mhz is the max in Catalyst Control Center?
You can use MSI Afterburner to clock them higher.
http://event.msi.com/vga/afterburner/download.htm

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[Fiyasko]

Uhmmmm i dont know about the 6950's but dropping mem clock on most ATi cards generally reduces heat and increses Mhash.
Failed on my 6870
Failed on my 6990's
Failed on my 5830
Boosted my 5770 by 20mhash and dropped temps by 5°

[EpicBacon]

Failed on my 5830

I was able to lower the memory clock on my Sapphire 5830 to 300mHz when it was the only card in my rig. I tried with two 5830's and it failed, and also tried two 5850's + one 5830 and it failed.

Weird stuff.

[tachi641]

I OC'd all my 6950s now to 840mhz and 20% extra power on the catalyst control center. I wish I can clock them higher, they are stable as a rock, I am getting between 300mhash/s - 325mhash/s per seconds on each card at these settings. Temps are high 60's-c Any way I can push them harder?

I'm assuming 840mhz is the max in Catalyst Control Center?
You can use MSI Afterburner to clock them higher.
http://event.msi.com/vga/afterburner/download.htm

I downloaded the MSI After Burner program you are talking about, it is capping me at 840mhz - I also dropped the mem clock as low as possible.

[Meatball]

To allow for further overclocking with Afterburner you have enable "Unofficial Overclocking" in the afterburner config file.  Go into the MSI Afterburner folder in your Program Files (or wherever you installed it) and edit the "MSIAfterburner.cfg" file in notepad or any text editor.

Scroll down and near the bottom you need to make two changes.

Where it says "UnofficialOverclockingEULA   =" add the following without the quotes "I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it"

Under that change "Enable Unofficial Overclocking" to "1".  Restart Afterburner and you'll have access to a wider range of clock speeds.

Just be very careful, you can easily over/underclock way too high with it.

[tachi641]

To allow for further overclocking with Afterburner you have enable "Unofficial Overclocking" in the afterburner config file.  Go into the MSI Afterburner folder in your Program Files (or wherever you installed it) and edit the "MSIAfterburner.cfg" file in notepad or any text editor.

Scroll down and near the bottom you need to make two changes.

Where it says "UnofficialOverclockingEULA   =" add the following without the quotes "I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it"

Under that change "Enable Unofficial Overclocking" to "1".  Restart Afterburner and you'll have access to a wider range of clock speeds.

Just be very careful, you can easily over/underclock way too high with it.

What do you think is safe for a 6950? and a 6990?