Hp Compaq Dc5800 Small Form Factor Bios Update Verified -

A: Yes and no. v01.29 adds microcode for 45nm quad-cores, but the SFF’s power delivery (240W PSU) and VRM limit sustained performance. A Q8400 is the safe max.

Update to v01.29 if:

Do NOT update if:

Use a tool like Universal BIOS Backup Toolkit 2.0 to save your current BIOS to a USB drive. This is your safety net. hp compaq dc5800 small form factor bios update verified

Cause: SATA mode changed from IDE to AHCI (or vice versa).
Solution: Enter BIOS → Advanced → SATA Emulation → Set to your original mode (likely IDE). Reboot. Then switch modes cleanly via Windows Registry if needed. A: Yes and no

HP’s release notes for SP46935 (v01.28) and SP48963 (v01.29) list these verified changes: Do NOT update if: Use a tool like

Users have also reported that after this verified BIOS update, the DC5800 SFF can boot from a PCIe SATA card (non-bootable prior) and recognizes modern USB 3.0 add-in cards more reliably.