Re: Z800 fan noise seems extra loud (826 Views)
Occasional Visitor
Posts: 2
Registered: ‎01-02-2014
Message 1 of 3 (867 Views)

Z800 fan noise seems extra loud

[ Edited ]

At work I recently received a Z800 Workstation. The fans in this computer are running very loud and we have not been able to quiet it down.


I have updated the BIOS to the latest (03.57 Rev. A) and set to defaults. This didn't seem to change anything.


I have also installed the SpeedFan utility and tried to use that to slow down the fans. It does not seem to be able to impact the fan speeds at all.


In the BIOS, I see this information regarding temps and fan speeds.


* CPU 0 = 32C
* CPU1 = 32C
* Ambient = 0C
* Memory = 36C


Fan speeds showed this:
* CPU0 = 1109 rpm
* CPU1 = 0
* Memory = 785 rpm
* Chipset = 0
* Chassis = 4150rpm
* PCI = 0


The sound coming from the workstation is not like a fan is broken or going out. It is just simply like the fans are working extra hard keeping things cool. It sounds like I'm sitting in a data center.


Is there anyway to have the fans come on an off as needed or slow down? Is there some HP utility that I'm not seeing?


Any ideas would be appreciated.





P.S. This thread has been moved from Workstations - Itanium-Based, hp9000, Visualize to Workstations - z series, xw series, and legacy x and w series. - Hp Forum Moderator

Respected Contributor
Alex Geroulaitis
Posts: 269
Registered: ‎07-08-2009
Message 2 of 3 (848 Views)

Re: Z800 fan noise seems extra loud

in BIOS, under Power - Thermal - Fan Idle Mode - what is it set to?

If to default (minimum) - then something is wrong with the system. Perhaps the ambient sensor is broken. Pretty sure it shouldn't be zero.
HP VAR, Systems Integrator
(if my post was helpful, please "mark as a solution" or give "kudos" - thanks)
Occasional Visitor
Posts: 2
Registered: ‎01-02-2014
Message 3 of 3 (826 Views)

Re: Z800 fan noise seems extra loud

I wondered if the Fan Idle Mode setting was supposed to do something. It appears to be at the minimum. When I change it, the fans speed up slightly then settle back to their 'normal' level. Doesn't seem to matter what setting I put it on the fans end up running the same.

I guess we'll figure something is broke.
The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation.