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Zalman PWM Help

post #1 of 6
Thread Starter 
Hi guys. I got one of these coolers on the weekend and I've been impressed by its performance, up till last night that is.

The PWM fan on it normally runs at around 930RPM (at which speed its pretty much silent), but after running prime for a couple hours the PWM speed won't drop below ~1100 RPM.

Unfortunately, my rig uses beQuiet/Noctua fans and a Corsair AX650, so the noise increase of the CPU fan is easily noticeable.

I've tried rebooting the machine and changing the settings in the BIOS, and while I can get it to spin faster (and make even more noise), I can't get it to slow down to the 900RPM or so I've become used to.

Any ideas?
    
CPUMotherboardGraphicsRAM
i7 860 @ stock MSI P55 GD80 KFA GTX 570 SLI 12GB Corsair Venegence 1600MHz 
Hard DriveHard DriveCoolingMonitor
128GB OCZ Vertex SSD 640GB Samsung M7 2.5" HDD Zalman 9900 MAX Blue LG DM2780D 27" 3D LED Monitor 
KeyboardPowerCaseMouse
Logitech G13 Corsair AX 650 Lian Li A05 (Black Powder Coated) Logitech G700 
Audio
Logitech Z323 
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CPUMotherboardGraphicsRAM
i7 860 @ stock MSI P55 GD80 KFA GTX 570 SLI 12GB Corsair Venegence 1600MHz 
Hard DriveHard DriveCoolingMonitor
128GB OCZ Vertex SSD 640GB Samsung M7 2.5" HDD Zalman 9900 MAX Blue LG DM2780D 27" 3D LED Monitor 
KeyboardPowerCaseMouse
Logitech G13 Corsair AX 650 Lian Li A05 (Black Powder Coated) Logitech G700 
Audio
Logitech Z323 
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Reply
post #2 of 6
What are the temps your getting? (Idle and Prime Small fft)
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Dell U2515H Fractal Design Edison M 550W In Win 303 White NZXT Hue+ 
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CPUMotherboardGraphicsRAM
4670K  Gryphon Z87 GTX 980 8GB 1600MHz CL11 Kingston  
RAMHard DriveHard DriveOS
8GB 1600Mhz CL11 Samsung ST1000LM035 Intel 530 Series 120GB Windows 10 Pro 
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post #3 of 6
Thread Starter 
Temps are 29~34 idle and ~66(max) in prime large fft's.

I've set it in my bios so the target temp for the CPU is <60deg, which I think means the fan will only ramp up once the temp is greater than 60. The problem is that when it does ramp up (only goes up a tiny bit to ~1100), it refuses to ramp down again.
    
CPUMotherboardGraphicsRAM
i7 860 @ stock MSI P55 GD80 KFA GTX 570 SLI 12GB Corsair Venegence 1600MHz 
Hard DriveHard DriveCoolingMonitor
128GB OCZ Vertex SSD 640GB Samsung M7 2.5" HDD Zalman 9900 MAX Blue LG DM2780D 27" 3D LED Monitor 
KeyboardPowerCaseMouse
Logitech G13 Corsair AX 650 Lian Li A05 (Black Powder Coated) Logitech G700 
Audio
Logitech Z323 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 860 @ stock MSI P55 GD80 KFA GTX 570 SLI 12GB Corsair Venegence 1600MHz 
Hard DriveHard DriveCoolingMonitor
128GB OCZ Vertex SSD 640GB Samsung M7 2.5" HDD Zalman 9900 MAX Blue LG DM2780D 27" 3D LED Monitor 
KeyboardPowerCaseMouse
Logitech G13 Corsair AX 650 Lian Li A05 (Black Powder Coated) Logitech G700 
Audio
Logitech Z323 
  hide details  
Reply
post #4 of 6
have you tried updating the bios? ( if there is one available)
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CPUMotherboardGraphicsRAM
4670K  Gryphon Z87 GTX 980 8GB 1600MHz CL11 Kingston  
RAMHard DriveHard DriveOS
8GB 1600Mhz CL11 Samsung ST1000LM035 Intel 530 Series 120GB Windows 10 Pro 
MonitorPowerCaseOther
Dell U2515H Fractal Design Edison M 550W In Win 303 White NZXT Hue+ 
  hide details  
Reply
Vaporizer
(16 items)
 
  
CPUMotherboardGraphicsRAM
4670K  Gryphon Z87 GTX 980 8GB 1600MHz CL11 Kingston  
RAMHard DriveHard DriveOS
8GB 1600Mhz CL11 Samsung ST1000LM035 Intel 530 Series 120GB Windows 10 Pro 
MonitorPowerCaseOther
Dell U2515H Fractal Design Edison M 550W In Win 303 White NZXT Hue+ 
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Reply
post #5 of 6
Thread Starter 
Nah, and I'd rather not do that. I've just stuck two 570's in my rig, so can't even hear the CPU fan anymore tongue.gif. Thanks for your help.
    
CPUMotherboardGraphicsRAM
i7 860 @ stock MSI P55 GD80 KFA GTX 570 SLI 12GB Corsair Venegence 1600MHz 
Hard DriveHard DriveCoolingMonitor
128GB OCZ Vertex SSD 640GB Samsung M7 2.5" HDD Zalman 9900 MAX Blue LG DM2780D 27" 3D LED Monitor 
KeyboardPowerCaseMouse
Logitech G13 Corsair AX 650 Lian Li A05 (Black Powder Coated) Logitech G700 
Audio
Logitech Z323 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 860 @ stock MSI P55 GD80 KFA GTX 570 SLI 12GB Corsair Venegence 1600MHz 
Hard DriveHard DriveCoolingMonitor
128GB OCZ Vertex SSD 640GB Samsung M7 2.5" HDD Zalman 9900 MAX Blue LG DM2780D 27" 3D LED Monitor 
KeyboardPowerCaseMouse
Logitech G13 Corsair AX 650 Lian Li A05 (Black Powder Coated) Logitech G700 
Audio
Logitech Z323 
  hide details  
Reply
post #6 of 6
Your welcome thumb.gif
Vaporizer
(16 items)
 
  
CPUMotherboardGraphicsRAM
4670K  Gryphon Z87 GTX 980 8GB 1600MHz CL11 Kingston  
RAMHard DriveHard DriveOS
8GB 1600Mhz CL11 Samsung ST1000LM035 Intel 530 Series 120GB Windows 10 Pro 
MonitorPowerCaseOther
Dell U2515H Fractal Design Edison M 550W In Win 303 White NZXT Hue+ 
  hide details  
Reply
Vaporizer
(16 items)
 
  
CPUMotherboardGraphicsRAM
4670K  Gryphon Z87 GTX 980 8GB 1600MHz CL11 Kingston  
RAMHard DriveHard DriveOS
8GB 1600Mhz CL11 Samsung ST1000LM035 Intel 530 Series 120GB Windows 10 Pro 
MonitorPowerCaseOther
Dell U2515H Fractal Design Edison M 550W In Win 303 White NZXT Hue+ 
  hide details  
Reply
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