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Hello OCN,

I have enabled "extended" overclocking to my 7950 via MSI Afterburner and the "/xcl" switch. I increased the voltage to 1.1V from 1.05V and the core clock to 1150MHz from 880MHz and the memory clocks from 1250MHz to 1700MHz (I did not touch the memory voltage). I am 100% stable at these 3D speeds running games, benchmarks, etc.

My problem comes when the card is switching between idle and 2D/3D clocks (I.e. PowerPlay). When the card is idling it is running at 500MHz on the core and 1700MHz on the memory (voltage stays at 1.1V). When I watch a video on YouTube (for example) the card switches to the 2D clocks of 1150MHz on the core and 1250MHz on the memory (voltage decreases to 0.95V) and my main display (connected to the dual-link DVI port of my card) goes crazy (think of a TV blasting "snow"). When the clocks go back up to "idle" (or 3D clocks) everything is back to normal but my main display is still "hazy" (again like the "snow" but you can actually see the picture..it's just not in focus). NOTE: My second monitor is connected via mini Displayport and it's perfectly fine.

What exactly is going on here and how can I fix it?

Much appreciate,
Aznboy
Buena Vista
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4790K [4.6GHz] [1.25V] Asus Maximus VII Formula [BIOS 3003] NVIDIA GTX 1080 Ti FE [2050MHz] [12GHz QDR] Samsung MV-3V4G3 16GB (4x4GB) DDR3 2133 
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Intel 535 Series 240GB [RAID 1] Crucial M500 960GB Seagate Barracuda 3TB Western Digital VelociRaptor 500GB [RAID 0] 
CoolingCoolingOSMonitor
Corsair H110i GT (Qty 2) Phanteks PH-F140XP Microsoft Windows 10 Pro [64-bit] Dell S2716DG [G-Sync] 
KeyboardPowerCaseMouse
Razer BlackWidow Chroma EVGA Supernova G2 1300W NZXT H440 [Black/Red] Logitech G900 
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Buena Vista
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4790K [4.6GHz] [1.25V] Asus Maximus VII Formula [BIOS 3003] NVIDIA GTX 1080 Ti FE [2050MHz] [12GHz QDR] Samsung MV-3V4G3 16GB (4x4GB) DDR3 2133 
Hard DriveHard DriveHard DriveHard Drive
Intel 535 Series 240GB [RAID 1] Crucial M500 960GB Seagate Barracuda 3TB Western Digital VelociRaptor 500GB [RAID 0] 
CoolingCoolingOSMonitor
Corsair H110i GT (Qty 2) Phanteks PH-F140XP Microsoft Windows 10 Pro [64-bit] Dell S2716DG [G-Sync] 
KeyboardPowerCaseMouse
Razer BlackWidow Chroma EVGA Supernova G2 1300W NZXT H440 [Black/Red] Logitech G900 
Mouse PadAudio
Razer Firefly Logitech G933 
  hide details  
Reply