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Issues with Underclocking and Overclocking a 5870

post #1 of 3
Thread Starter 
Hello,

-First of all, I'm using a dual screen setup (at different resolutions if it matters)
-I am using MSI Afterburner (the problem exists with all utilities I've tried)
-I have disabled CCC Overdrive (and tried the changing of resolution after setting clocks in MSI Afterburner, which brought some strange findings)
-I have been using GPU-Z to monitor some things (I will explain my findings with this later)
-Last I have seen a few threads that had sort of similar issues as me but nothing in them provided any solution or results

The problem is after I set an overclock OR underclock (to rule out stability as an issue), one of my monitors starts experiencing extreme flickering. Only in the desktop though, not in games. As I stated earlier I have tried a few tricks and recommendations from people with similar problems to no avail.

What I have found from messing around:

-When I try the CCC resolution change trick after setting afterburner clocks; I get flickering ONLY on the monitor that had it's resolution changed. I can effectively switch the flickering from monitor to monitor by changing their resolutions.
-Immediately when I press apply (with ANY overclocking utility including CCC overdrive) on any underclock, overclock, voltage change etc... I can see in gpu-z that the resting state of the core clock and the memory clock IMMEDIATLY drop from 400 and 1200 respectively, to 157 and 300 respectively. I have no idea if this is normal but it seems pretty low.

Please help me, I'm pulling my hair out. I don't even care about overclocking at this point, it's just pissing me off. mad.gif
The Second Coming
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The Second Coming
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post #2 of 3
Hello i have this too on my hd6950.

Apperently AMD destroyed the working of Sapphire Trixx\Msi Afterburner for hd5800 and hd6900 series, after about driver version 12.8.

But the newest drivers give more performance on stock speeds, then OCed speeds on old driver.

So just try and OC with the Ati CCC thumb.gif
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post #3 of 3
Thread Starter 
Quote:
Originally Posted by prescotter View Post

Hello i have this too on my hd6950.

Apperently AMD destroyed the working of Sapphire Trixx\Msi Afterburner for hd5800 and hd6900 series, after about driver version 12.8.

But the newest drivers give more performance on stock speeds, then OCed speeds on old driver.

So just try and OC with the Ati CCC thumb.gif

CCC overclocking and underclocking produces the same flickering as any other utility sad-smiley-002.gif
The Second Coming
(12 items)
 
   
CPUMotherboardGraphicsRAM
AMD Ryzen™ 1700 Asrock Fatal1ty x370 Gaming K4 Zotac mini GTX 1080ti TridentZ 16GB (2x8GB) DDR4 
Hard DriveHard DriveOSMonitor
256GB M.2 SSD 1TB HDD Windows 10 Pro Acer XG270HU 
KeyboardPowerCaseMouse
Logitech G15 750W Thermaltake Toughpower Gold Rated Thermaltake View 27 w/ riser Logitech G40 
CPUMotherboardGraphicsRAM
i7-4790k MSI Z97M Gaming Gtx 1070 Gskill 8gig 1600mhz (2x4) @2133 mhz 
Hard DriveCoolingOSKeyboard
1TB WD Caviar Black Corsair H75 Windows 8.1 Logitech G15 
PowerCaseMouseAudio
Thermaltake Toughpower 750w Gold  Fractal Design Define Mini Logitech G400 Sennheiser PC 350 (hero mod) 
CPUMotherboardGraphicsRAM
fx-8350 @5ghz 990fxa-ud3 rev 1.1 PowerColor 290x @1150/1500mhz Gskill 8gig 1600mhz (2x4) @2033 mhz 
Hard DriveCoolingOSPower
1TB WD Caviar Black rs360 raystorm kit Windows 8 Pro 700 Watt Corsair 
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HAF 912  Logitech G400 
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The Second Coming
(12 items)
 
   
CPUMotherboardGraphicsRAM
AMD Ryzen™ 1700 Asrock Fatal1ty x370 Gaming K4 Zotac mini GTX 1080ti TridentZ 16GB (2x8GB) DDR4 
Hard DriveHard DriveOSMonitor
256GB M.2 SSD 1TB HDD Windows 10 Pro Acer XG270HU 
KeyboardPowerCaseMouse
Logitech G15 750W Thermaltake Toughpower Gold Rated Thermaltake View 27 w/ riser Logitech G40 
CPUMotherboardGraphicsRAM
i7-4790k MSI Z97M Gaming Gtx 1070 Gskill 8gig 1600mhz (2x4) @2133 mhz 
Hard DriveCoolingOSKeyboard
1TB WD Caviar Black Corsair H75 Windows 8.1 Logitech G15 
PowerCaseMouseAudio
Thermaltake Toughpower 750w Gold  Fractal Design Define Mini Logitech G400 Sennheiser PC 350 (hero mod) 
CPUMotherboardGraphicsRAM
fx-8350 @5ghz 990fxa-ud3 rev 1.1 PowerColor 290x @1150/1500mhz Gskill 8gig 1600mhz (2x4) @2033 mhz 
Hard DriveCoolingOSPower
1TB WD Caviar Black rs360 raystorm kit Windows 8 Pro 700 Watt Corsair 
CaseMouse
HAF 912  Logitech G400 
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Reply
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