Memory Population Guidelines - Supermicro Supero C7Q270-CB-ML User Manual

Possible System Memory Allocation & Availability
Firmware Hub flash memory (System BIOS)
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-
VGA Memory
TSEG
Memory available to OS and other applications

Memory Population Guidelines

When installing memory modules, the DIMM slots should be populated in
the following order: DIMMA2, DIMMB2, then DIMMA1, DIMMB1.
• Always use DDR4 DIMM modules of the same size, type and speed.
• Mixed DIMM speeds can be installed. However, all DIMMs will run at the
speed of the slowest DIMM.
DIMMB2 DIMMA2
4GB
4GB
8GB
8GB
16GB
16GB
System Device
Recommended Population (Balanced)
DIMMB1
4GB
4GB 4GB
8GB
8GB 8GB
16GB
16GB 16GB
Size
1 MB
4 KB
2 MB
4 KB
256 MB
256 MB
512 MB
16 MB
1 MB
DIMMA1
4GB
8GB
16GB
2-11
Chapter 2: Installation
Physical Memory
Remaining (-Available)
(4 GB Total System
Memory)
3.99
3.99
3.99
3.99
3.76
3.51
3.01
2.85
2.84
2.84
Total System Memory
8GB
16GB
16GB
32GB
32GB
64GB