Stop when you feel the beginning of things bottoming out. The sheet metal threads those go into are under engineered and you can strip the threads easily. It has the proper pin 1 to pin 5 ground jumper wire, shown:Ī tip: when you screw down the 4 screws for the heatsink, assuming you do this, be very careful to not over tighten. It is running at 1292 RPM per free HWMonitor, from. They run so quiet that I cannot hear them from about 4 feet away. My recall is that uses a 92 x92 x25 mm fan, and I use those heatsinks in all of our Z400 builds. Look in eBay for 463981-001, and the lowest price including shipping is 27.00 from a seller who has more than 10. Regardless, I'm recommending you spend the 27.00 to buy an official HP Performance heatsink/fan made for the Z400. Can't tell if it is even plugged into the motherboard header meant for that. That clearly is not a HP heatsink/fan, and has a push/pull set of two fans that look like 80mm ones. That looks like it would make quite a racket even before your BIOS upgrade. Business PCs, Workstations and Point of Sale Systems.Printer Wireless, Networking & Internet.DesignJet, Large Format Printers & Digital Press.Printing Errors or Lights & Stuck Print Jobs.Notebook Hardware and Upgrade Questions.

Bios fan settings