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How can i know the maximum RAM support capacity of my motherboard? Is there any way to identify it from 'cmd'

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Short, practical guide that complements the replies from and .

Identifying the exact motherboard model is the single most important step: the manufacturer's spec sheet or manual is the authoritative source for "maximum RAM" (total and per‑slot), supported memory type (DDR3/DDR4/DDR5), channel population rules, and ECC/registered support — as noted. Command output and system tools (as demonstrated) show what is installed now, but not the board's design limits.

A command‑line way to get the board model (so the manual/specs can be looked up) is the baseboard query. Example:

wmic baseboard get product,Manufacturer,version,serialnumber

msinfo32 or third‑party tools (CPU‑Z, HWiNFO, Speccy) will also report the model and chipset if a GUI is preferred.

What to check once the model is known: total supported memory, maximum per DIMM, number of slots, supported DIMM types (UDIMM vs RDIMM), supported ECC, maximum supported module density (important on older boards), and any BIOS notes about memory support. Also note platform/OS constraints: a 32‑bit OS will cap usable RAM (~4 GB), whereas 64‑bit editions allow much higher totals.

Practical upgrade tips: consult the motherboard QVL for tested modules, update BIOS if a newer release adds support for high‑density sticks, follow slot‑population rules for dual/quad channel, verify memory recognized in BIOS after fitting, and run a memory tester (memtest86) if stability is a concern. These steps determine the true usable maximum and avoid surprises during an upgrade.

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Member Avatar for XP78USER

What type is the motherboard im sure ill find the maximum capacity of it on the manufacturers website

Member Avatar for RikTelner 
C:\Users\myname>systeminfo | FINDSTR /C:"Memory"
Total Physical Memory:     3.983 MB
Available Physical Memory: 1.148 MB
Virtual Memory: Max Size:  7.965 MB
Virtual Memory: Available: 4.571 MB
Virtual Memory: In Use:    3.394 MB

C:\Users\myname>

Try command systeminfo | FINDSTR /C:"Memory", it may kinda take long.
Total Physical Memory: Actual RAM installed: 4GB.
Virtual Memory: Max Size: Reserved space on the disk (paging/swap) for temporary fake RAM: 8GB.
Virtual Memory: Available: Free cache memory, yet to be used for swap.
Virtual Memory: In Use: Memory still written on disk, that are THAT required to be in RAM: 3.3GB.

If you want fast but untidy version: wmic MemoryChip get capacity, this will get you amount of RAM memory (official amount) in bytes. REMEMBER, this one isn't quite accurate, I have 4GB stick, so it will say 4294967296 bytes, but only 3.8GB is usable.

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