-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
- HP Community
- Desktops
- Business PCs, Workstations and Point of Sale Systems
- Z400 5 beeps despite no change in RAM

Create an account on the HP Community to personalize your profile and ask a question
05-11-2023 08:24 AM
Update
I’ve now replaced the motherboard with a refurbished one. With the original, 475W power supply, the original, W3550 processor, and 6x 4GB DIMMs it booted up fine. 😀
So I’m back where I was. 😐
I’ve calculated the power load for my planned upgrade.
GPU GTX1660Ti 132 W
CPU X5690 130 W
Main board 80 W
HDD Hitachi 2TB ×2 25 W
case fans ×2 6 W
RAM 48GB 18 W
Mouse & kbd 3 W
Optical drive 25 W
TOTAL 419W
+ 10% for bad luck … 461W
So it should be okay until I add a second graphics card, when I'll install a 600W supply
My upgrade path is …
RAM to 48GB
processor to X5690
boot drive to an SSD
graphics to an Nvidea GTX1660TI (that model is supported by HP)
RAID of 2× 2TB hard drives
Then I’ll discover whether it runs Flight Simulator fast enough to satisfy me.
05-12-2023 09:07 PM - edited 05-12-2023 09:09 PM
Take a look at this link if you have not seen it already:
https://www.youtube.com/watch?v=9X5I3I8Wzf0
You can see the Z400 they're working on is a v2 (it has 6 instead of 4 memory sockets). Note the passive airflow baffle... You want one of those, plus a 92 x 25mm HP front case fan either in its black plastic official carrier, or via a ghetto mod. You might want to get the power supply upgraded early rather than later. The Z400 workstations almost all came with the "Performance" heatsink/fan shown in the video. You surely want that and probably already have one in place.
- « Previous
- Next »