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Installing mismatched cards

post #1 of 6
Thread Starter 
With the BOINC pentathlon coming up, I'd like to have all the power I can. My secondary rig has a 5970 in it, but I have a 4870X2 I'd like to put in there for crunching.
Does anyone know any tricks to get this working? So far what happens, is that the card shows properly in the device manager, but if left enabled the monitor goes blank.
If you restart in safe mode, and disable the 4870X2 in the device manager and restart, then the display acts fine. Try to re-enable it and it will immediately go blank.

Also, when it goes blank I've tried hooking the display to the 4870x2 and it still stays blank.

Any ideas?
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post #2 of 6
should work but you need a monitor hooked up to each of your gpus for boinc to use them right.
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post #3 of 6
Does it need to be an active monitor? Can you use those dongles (active or passive dummy dongles)?
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post #4 of 6
Thread Starter 
Quote:
Originally Posted by Bal3Wolf;13309848 
should work but you need a monitor hooked up to each of your gpus for boinc to use them right.

Unfortunately I haven't gotten that far. I need to figure out how to have the 4870 enabled without it putting the monitor in standby.
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post #5 of 6
Quote:
Originally Posted by Amor;13311289 
Does it need to be an active monitor? Can you use those dongles (active or passive dummy dongles)?

dummy dongles will work if you use the resister trick.
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Samsung EVO 850 500 EK-SBAY Dual DDC 3.2 PWM Serial Alphacool NexXxoS ST30 Full Copper Radiator 360 Hardware Labs Black Ice SR2 Multiport Black Car... 
CoolingCoolingOSMonitor
EK-CoolStream RAD XTC 420 koolance 380i Windows 10 Pro ASUS VW246H Black 24" 2ms 
PowerCaseMouseAudio
SeaSonic M12D SS-850 850W  Thermaltake core x71 CM Storm Sentinel Advance II Corsair Void 
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F3-12800CL9S-4GBRL WDC WD1001FALS-00J7B1 ST31000340AS WDC WD7500AAKS-00RBA0 
Hard DriveOptical DriveCoolingOS
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post #6 of 6
the second monitor has always worked for me. i even used a tv hooked to my second card before and it worked.
    
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