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April 28th, 2025 12:50
Precision M6800 and 64GB RAM
So a few years ago there was this one guy who commented on a YouTube video saying that he had once put 64GB of RAM in an M6800, and that it worked. When I questioned him further about it he said the only prerequisites were to have an i7 processor (I have the best; i7-4940MX) and the latest BIOS version (I have the latest; A26).
I was always curious about this but at the time 64GB (4 x 16GB) of DDR3L was cost prohibitive, priced at nearly £600 in the UK for a ready-to-go-kit!
Also, I have since learnt that even though both Dell and Intel state that 32GB is the max, some E-series Latitudes (and probably some M-series Precisions) of the era can in fact take double what their stated maximum RAM capacities are, and this has been confirmed by actual videos on YouTube. So the upgrade should in theory be quite possible.
Well a few years later and prices have come down, curiosity is still with me, and I decided to order a kit from China which cost less than £80! It's a Micron kit that has the exact same specs as my current 32 GB (4 x 8GB) kit (2RX8, PC3L-12800S, 1600 MHz, 1.35V) but just double the capacity.
However, much to my disappointment, it didn't work. Putting in all 4 x 16GB sticks resulted in the machine powering off a few seconds after turning it on, with the palmrest indicator lights showing Solid-Blinking-Blinking (No memory modules are installed/detected). Using just two sticks of the new RAM with two sticks of the old resulted in the same behavior but showing Solid-Blinking-Solid (The memory modules are detected but has encountered an error).
Upon putting back all 4 x sticks of the old RAM, the first boot shows the message "Alert! No memory was detected on previous boot."
So assuming that the actual sticks of RAM are fine (I've no way of testing them further), has anyone got any insight into why my 64GB isn't compatible?