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System Name | Dell-y Driver |
---|---|
Processor | Core i5-10400 |
Motherboard | Asrock H410M-HVS |
Cooling | Intel 95w stock cooler |
Memory | 2x8 A-DATA 2999Mhz DDR4 |
Video Card(s) | UHD 630 |
Storage | 1TB WD Green M.2 - 4TB Seagate Barracuda |
Display(s) | Asus PA248 1920x1200 IPS |
Case | Dell Vostro 270S case |
Audio Device(s) | Onboard |
Power Supply | Dell 220w |
Software | Windows 10 64bit |
A video about an issue with my ASUS HD7850 DirectCU: when 2d clocks are active the fan control works as intended but as soon as the card gets a 3d load the fan speed begins to fluctuate a lot, making this annoying vroom! vrooom! sound.
Setting a fixed fan speed on Afterburner or Overdrive doesn't work... well, it actually does, since the speed reported by GPU-Z, Overdrive and Afterburner is the speed you set the fan to but the RPM readout and the sound clearly show that the fan revs up and down based on some kind of thermal management algorithm since once the temps go over 50C the fluctuation decreases a lot and by 60C it practically flat-lines. Not even setting a 100% fan speed gets rid of the issue since the fan sometimes goes to 9000RPM which is 2x of the 100% setting. As you can see on 2:15, as soon as I close the render test the 100% setting works as intended.
I have a Coolviva Z1 cooler that I can use on this card so this issue isn't a dealbreaker but I'm curious as to what causes this. Doing a search for "ASUS fluctuating fan" gives out several links and for some reason it seems that DCU versions are the most (only?) affected by this.
BIOS: Asus.HD7850.1024.130221 (latest on TPU GPU database)
Tested drivers: Cat 13.4, 14.4, 14.9
Tested OSes: W10 Preview, W8.1 Pro
Setting a fixed fan speed on Afterburner or Overdrive doesn't work... well, it actually does, since the speed reported by GPU-Z, Overdrive and Afterburner is the speed you set the fan to but the RPM readout and the sound clearly show that the fan revs up and down based on some kind of thermal management algorithm since once the temps go over 50C the fluctuation decreases a lot and by 60C it practically flat-lines. Not even setting a 100% fan speed gets rid of the issue since the fan sometimes goes to 9000RPM which is 2x of the 100% setting. As you can see on 2:15, as soon as I close the render test the 100% setting works as intended.
I have a Coolviva Z1 cooler that I can use on this card so this issue isn't a dealbreaker but I'm curious as to what causes this. Doing a search for "ASUS fluctuating fan" gives out several links and for some reason it seems that DCU versions are the most (only?) affected by this.
BIOS: Asus.HD7850.1024.130221 (latest on TPU GPU database)
Tested drivers: Cat 13.4, 14.4, 14.9
Tested OSes: W10 Preview, W8.1 Pro
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