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March 30, 2020, 04:12:35 pm


SMF - Just Installed!

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Messages - bobdj_Z800

Forgot to mention, the machine is a multi OS setup. Windows 7 & 10, archlinux and macos(hackintosh). So I was looking for a more low level solution.
(Your links are not working.)
Hacked Z800 in its "own" case

Unfortanely long before Andy's great article I started hacking my Z800 in its own case.
I had a problem with the loud sound of the machine when I bought it. I like very quiet machines.

These are my mods that I made long time ago.

- CPU coolers 2 Noctua CPU coolers NF-B9-1600
adjusted the existing screws too lenght too fit the noctua
also I had to cut the memory fan holder plastic so the Noctua coolers could fit.
- 2 fans Coolink 92mm SWiF2-92P for back
- 2 fans Coolink 92mm SWiF2-92P for HD case
- 2 fans Coolink 80mm SWiF2-80P for power
- the memory fans are still factory, because of the pins and no color of the fan cables.
(This is something I still need to change. If somebody has an idea how too fit them in please let me know. see image about connector diagram)

The system works many years very stable without any issues.
After this mod the machine noise was acceptable. Nevertheless when in idle (from BIOS setting) the sound is actually what I want.

So I checked the ambient sensor temperature, it seems ok, in BIOS it shows some temperature.

Therefore I am not sure wether to change the transistor in the front cable.

So when the Fan Idle Mode in Thermal setting in BIOS is the highest (7 blocks) that is the fan speed all the time.
Only at startup the system is sounding like 1 block in Fan Idle Mode in Thermal.
After 30 seconds when the OS is loaded the fans start speeding full speed and sound like the 7 blocks in BIOS.

Doe anybody have a suggestion for lowering the speed of the fans.

I have read about the Noctua na-src7 Low-Noise Adaptor, or should I still be changing the ambient temp transistor?
Noctua low-noise-adapters link: http://noctua.at/en/products/accessories/na-src7/specification
ambient transistor post: https://h30434.www3.hp.com/t5/Desktops-Archive-Read-Only/HP-xw-SERIES-THERMAL-SENSOR-TRANSISTOR-SWAP-TUTORIAL/td-p/5156011

The images of the hacks speak for them self.

BIOS Settings

Sensor temps

HD case fans

Adjusted screws CPU cooler

Back fans

Fans used Coolink SWiF2-80P and SWiF2-92P

Memory fans with cut-to-fit plastic

Noctua CPU coolers


My System:

System:    Host: archz800 Kernel: 4.9.29-1-lts x86_64 (64 bit) Desktop: Xfce 4.12.3 Distro: Arch Linux
Machine:   Device: desktop System: Hewlett-Packard product: HP Z800 Workstation
           Mobo: Hewlett-Packard model: 0AECh v: D BIOS: Hewlett-Packard v: 786G5 v03.57 date: 07/15/2013
CPU(s):    2 Hexa core Intel Xeon X5650s (-HT-MCP-SMP-) cache: 24576 KB
           clock speeds: max: 2661 MHz 1: 1596 MHz 2: 1596 MHz 3: 1596 MHz 4: 1596 MHz 5: 1596 MHz 6: 1596 MHz
           7: 1596 MHz 8: 1596 MHz 9: 1596 MHz 10: 1596 MHz 11: 1596 MHz 12: 1596 MHz
Graphics:  Card: NVIDIA GT200GL [Quadro FX 4800]
           Display Server: N/A driver: nvidia Resolution: 209x55
Audio:     Card Intel 82801JI (ICH10 Family) HD Audio Controller driver: snd_hda_intel
           Sound: Advanced Linux Sound Architecture v: k4.9.29-1-lts
Network:   Card-1: Broadcom Limited NetXtreme BCM5764M Gigabit Ethernet PCIe driver: tg3
           Card-2: Broadcom Limited NetXtreme BCM5764M Gigabit Ethernet PCIe driver: tg3
Drives:    HDD Total Size: 6001.2GB (2.7% used)
Sensors:   System Temperatures: cpu: 38.0C mobo: 33.0C gpu: 52C
           Fan Speeds (in rpm): cpu: 683 fan-2: 1980 fan-3: 1878 fan-4: 1982
Info:      Processes: 252 Uptime: 13 min Memory: 1514.4/48286.4MB Init: systemd Client: Shell (bash) inxi: 2.3.8