Supero C7Z270-PG, User Manual

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Chapter 2: Installation
2-11
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 3.99
Local APIC 4 KB 3.99
Area Reserved for the chipset 2 MB 3.99
I/O APIC (4 Kbytes) 4 KB 3.99
PCI Enumeration Area 1 256 MB 3.76
PCI Express (256 MB) 256 MB 3.51
PCI Enumeration Area 2 (if needed) -Aligned on 256-MB
boundary
512 MB 3.01
VGA Memory 16 MB 2.85
TSEG 1 MB 2.84
Memory available to OS and other applications 2.84
Memory Population Guidelines
When installing memory modules, the DIMM slots should be populated in
the following order: DIMMA1, DIMMB1, then DIMMA2, DIMMB2.
• 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.
Recommended Population (Balanced)
DIMMA1 DIMMB1 DIMMA2 DIMMB2 Total System Memory
4GB 4GB 8GB
4GB 4GB 4GB 4GB 16GB
8GB 8GB 16GB
8GB 8GB 8GB 8GB 32GB
16GB 16GB 32GB
16GB 16GB 16GB 16GB 64GB