SUPER MICRO Computer X7DBi+ user manual Installing and Removing DIMMs

Chapter 2: Installation

Note 2: Due to memory allocation to system devices, memory remaining available for operational use will be reduced when 4 GB of RAM is used. The reduction in memory availability is disproportional. (See the Memory Availability Table below.)

Possible System Memory Allocation & Availability

System Device

Size

Physical Memory

Remaining (-Available)

(4 GB Total System Memory)

Firmware Hub flash memory (System BIOS)

1 MB

3.99GB

Local APIC

Area Reserved for the chipset

I/O APIC (4 Kbytes)

PCI Enumeration Area 1

PCI Express (256 MB)

PCI Enumeration Area 2 (if needed) -Aligned on 256-MB boundary-

4 KB

2MB

4KB

256MB

256MB

512MB

3.99GB

3.99GB

3.99GB

3.76GB

3.51GB

3.01GB

VGA Memory

TSEG

Memory available for the OS & other applications

16MB

1MB

2.85GB

2.84GB

2.84GB

X7DBi+

Installing and Removing DIMMs

Notch	DIMM2 FBD	Notch
Release	Note: Notch	Release
Tab		Tab
	should align
	with the
	receptive point
	on the slot

	To Install: Insert module vertically and press down until it
	snaps into place. Pay attention to the alignment notch at
	the bottom.
To Remove:
Use your thumbs	2 FBD
to gently push
the release tabs
near both ends of
the module. This
should release it
from the slot.
	2-7