Well-Known Member
Sep 19, 2011
cPanel Access Level
Root Administrator
Anyone knows what shoud I choose BIOS settings as for best results?

Total processors: 8 (2xQuad core Intel(R) Xeon(R) CPU E5405 @ 2.00GHz)
RAM: 32GB (16x2GB)
Interface is running bond mode 6.
Server used as webservice for domains, apache, mysql, mail.

Current Bios,
- Force PCI-E Gen2 slot to Gen1 mode [Auto]
Force PCI-E Gen2 port operate at Gen1 mode for compatibility issue with some PCI-E Gen1 card.
- Dual Graphic WinXP Support [Disabled]
Enabled for dual VGA card support under Windows XP
- Intel VT for Directed I/O (VT-d) [Disabled]
Enable/Disable Intel Virtualization Technology for Directed I/O (VT-d) by reporting the I/O device assigment to VMM through DMAR ACPI Tables.
- Crystal Beach Configure Enable [Disabled]
Enable Configuration /Memory mapped accesses to the Crystal-Beach Configuration space located in Device 8, Fn 0 and Fn 1.
- SERR signal condition [Single bit]
Select ECC error conditions that SERR# be asserted.
- 4GB PCI Hole Granularity [512 MB]
Select the granularity of PCI hole for PCI resource, if MTRRs are not enough, we my use this option to reduce the MTRR occupation
- Memory Branch Mode [Interleave]
Enumerated host mode. Dev16 Func1 Reg.40h bit 16 and Reg.58[14]
- Branch 0 Rank Interleave [4:1]
Select Branch 0 Rank Interleave
4:1 (default)
- Branch 0 Rank Sparing [Disabled]
Enables Branch 0 rank /DIMM sparing feature.
- Branch 1 Rank Interleave [4:1]
Select Branch 1 Rank Interleave
4:1 (default)
- Branch 1 Rank Sparing [Disabled]
Enables Branch 1 rank /DIMM sparing feature.
- Enhanced x8 Detection [Enabled]
Enables enhanced x8 DRAM UC error detection
- Empasize DRAM Driving Strenght [Enabled]
[Enabled/Disabled] Empasize DRAM Driving Strength
- Force ITK Config Clocking [Disabled]
Enables FBD configuration for ITK test suite
- Enable Multimedia Timer [No]
Enable/Disable Multimedia Timer support.
- Snoop Filter [Enabled]
Snoop Filter may reduce system dependent on memory configuration and application used.

If anything suggested to be changed then why would it become better?


Staff member
Apr 11, 2011
Hello :)

I don't see any settings that you should change, however you may want to consider consulting with a qualified system administrator or posting on a forum that specializes more in BIOS optimizations. You will likely get more input from another resource because BIOS configuration is not often discussed on this forum.

Thank you.