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Sapphire 6950 Fan "grind" when around 69% speed

post #1 of 8
Thread Starter 
My Sapphire 6950 Dirt 2 edition, the one with two fans, has this grinding sound when the fan is around 69%, but goes away when I make it go a bit faster. Should I check the fan for damage? Is it normal? Bearings messed up? Also, is it okay for the fan to run at around 75-85% for hours at a time?
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Brother's PC
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fx 8350 ASRock 990FX Fatal1ty Professional XFX Radeon R9 290 Black Edition Kingston Hyper X Black 2x4GB 
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Seagate Barracuda 2TB OCZ Vertex 3 WD 750 GB Samsung 840 EVO 
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Cooler Master Hyper 212 Plus Windows 7 Samsung SyncMaster T24B350 Rosewill Capstone 650W 
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post #2 of 8
clean it thoroughly and squirt some oil on the bearing/shaft maybe that'll help? worth a shot. and yes its okay to run it at full blast... it's just going to be loud as hell.
post #3 of 8
Thread Starter 
The grind is much louder than the fan running at ~90%
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fx 8350 ASRock 990FX Fatal1ty Professional XFX Radeon R9 290 Black Edition Kingston Hyper X Black 2x4GB 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 2TB OCZ Vertex 3 WD 750 GB Samsung 840 EVO 
CoolingOSMonitorPower
Cooler Master Hyper 212 Plus Windows 7 Samsung SyncMaster T24B350 Rosewill Capstone 650W 
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NZXT Phantom White with Red Trim Thermaltake Black Combat White Awesome 8" Zildjian A Splash Mousepad Logitech Z623 
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i5 3550 Biostar TZ77B Asus R9 270 Kingston HyperX 2x2GB 
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WD 320GB  Samsung 840 EVO 250GB Stock Intel HSF Win 7 64bit 
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post #4 of 8
My guess would be bearings
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post #5 of 8
it might be time to get a replacement fan... make sure there's no hairs or anything caught in the shaft also. I found hairs in my sister's gpu fan which caused it to be loud as heck. if everything else fails sick your pokemon on it.
post #6 of 8
Def bearings need a clean and re-lube. Either take it for an RMA if you don't want to void warranty or do it yourself.

If the fans are the same as the Twin Frozr type (plastic seal on the back) then follow this guide/video to taking them apart
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post #7 of 8
Thread Starter 
Well I cleaned the fans, now I don't have the problem. I guess I should explain the "grinding" a bit more, it sounded like the blades were grinding up against something, like I could tell it was only one blade making the sound, when it slowed down the "grind" frequency also slowed down, as it only grinded (ground?) when at a certain point in its revolution. But it seems fine now. Thanks for the input guys
My PC
(17 items)
 
Brother's PC
(12 items)
 
 
CPUMotherboardGraphicsRAM
fx 8350 ASRock 990FX Fatal1ty Professional XFX Radeon R9 290 Black Edition Kingston Hyper X Black 2x4GB 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 2TB OCZ Vertex 3 WD 750 GB Samsung 840 EVO 
CoolingOSMonitorPower
Cooler Master Hyper 212 Plus Windows 7 Samsung SyncMaster T24B350 Rosewill Capstone 650W 
CaseMouseMouse PadAudio
NZXT Phantom White with Red Trim Thermaltake Black Combat White Awesome 8" Zildjian A Splash Mousepad Logitech Z623 
Audio
Behringer Xenyx 302 USB 
CPUMotherboardGraphicsRAM
i5 3550 Biostar TZ77B Asus R9 270 Kingston HyperX 2x2GB 
Hard DriveHard DriveCoolingOS
WD 320GB  Samsung 840 EVO 250GB Stock Intel HSF Win 7 64bit 
MonitorPowerCaseMouse
22" Samsung Syncmaster  Diablotek 450W :( Apevia X-Plorer 2 Red Thermaltake Black 
  hide details  
Reply
My PC
(17 items)
 
Brother's PC
(12 items)
 
 
CPUMotherboardGraphicsRAM
fx 8350 ASRock 990FX Fatal1ty Professional XFX Radeon R9 290 Black Edition Kingston Hyper X Black 2x4GB 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 2TB OCZ Vertex 3 WD 750 GB Samsung 840 EVO 
CoolingOSMonitorPower
Cooler Master Hyper 212 Plus Windows 7 Samsung SyncMaster T24B350 Rosewill Capstone 650W 
CaseMouseMouse PadAudio
NZXT Phantom White with Red Trim Thermaltake Black Combat White Awesome 8" Zildjian A Splash Mousepad Logitech Z623 
Audio
Behringer Xenyx 302 USB 
CPUMotherboardGraphicsRAM
i5 3550 Biostar TZ77B Asus R9 270 Kingston HyperX 2x2GB 
Hard DriveHard DriveCoolingOS
WD 320GB  Samsung 840 EVO 250GB Stock Intel HSF Win 7 64bit 
MonitorPowerCaseMouse
22" Samsung Syncmaster  Diablotek 450W :( Apevia X-Plorer 2 Red Thermaltake Black 
  hide details  
Reply
post #8 of 8
Quote:
Originally Posted by Lanlan View Post

Well I cleaned the fans, now I don't have the problem. I guess I should explain the "grinding" a bit more, it sounded like the blades were grinding up against something, like I could tell it was only one blade making the sound, when it slowed down the "grind" frequency also slowed down, as it only grinded (ground?)when at a certain point in its revolution. But it seems fine now. Thanks for the input guys

As it was only grinding* thumb.gif
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Case
XBOX Original Casing 
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AMD Money Pit
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CPUMotherboardRAMRAM
AMD Athlon X2 5000+  Asrock N61P-S Samsung 512MB DDR2 Samsung 512MB DDR2 
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Seagate 80GB SATA Cooler Master Phenom II Stock Windows 7 Ultimate x64 Dell Slim 160 Watt 
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XBOX Original Casing 
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