Hi everyone,
I have a Raspberry Pi 4 Model B, rev 1.5, c03115, with OTP revision code 2e288257 (as shown in Raspberry Pi OS).
On the Diagnostic Screen it shows 1 GB RAM, but in Linux it shows 4 GB RAM.
Why is there a difference? Is this a bug in the board or EEPROM, or is it normal that the Diagnostic Screen doesn’t reflect the actual installed RAM? I remember that my old Raspberry Pi 4 Model B, rev 1.4, showed the correct amount of RAM.
How can I confirm how much RAM is physically installed?
I’m attaching screenshots of my terminal outputs and photos of the Diagnostic Screen:
I have a Raspberry Pi 4 Model B, rev 1.5, c03115, with OTP revision code 2e288257 (as shown in Raspberry Pi OS).
On the Diagnostic Screen it shows 1 GB RAM, but in Linux it shows 4 GB RAM.
Why is there a difference? Is this a bug in the board or EEPROM, or is it normal that the Diagnostic Screen doesn’t reflect the actual installed RAM? I remember that my old Raspberry Pi 4 Model B, rev 1.4, showed the correct amount of RAM.
How can I confirm how much RAM is physically installed?
I’m attaching screenshots of my terminal outputs and photos of the Diagnostic Screen:
Statistics: Posted by hetrixq — Sat Jan 10, 2026 5:24 pm — Replies 6 — Views 153