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February 1st, 2016 21:00
RAM Installation/Config
Precision M4800 quad core with 4GB x 2 RAM under keyboard + 8GB x 1 in a bottom slot. This support sheet doesn't list that config as valid but it seems to be working.
<ADMIN NOTE: Broken link has been removed from this post by Dell>
It's also strange that the manual says the bottom memory is primary and top secondary yet Dell put the original 4GB x 2 in the top slots.
When adding more RAM will 8GB x 3 or 8GB x 3 + 4GB x 1 work or does it have to be 8GB x 4?
DELL-Jesse L
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February 2nd, 2016 08:00
goinwireless,
Below are the memory specs for the M4800 Precision.
Type DDR3L
Speed 1600 MHz and 1866 MHz
Connectors 4 SoDIMM Sockets
Intel Core i5 and i7 Dual Core processors two DIMM slots
Intel Core i7 Quad Core and i7 Quad Extreme processors four DIMM slots
Capacity 1 GB, 2 GB, 4 GB, and 8 GB
Minimum Memory 2 GB
Maximum Memory
Intel Core i5 and i7 Dual Core processors 16 GB
Intel Core i7 Quad Core and i7 Quad Extreme processors 32 GB
The Precision M4800 & M6800 are utilizing Intel 4th Generation processors that require a new type of memory SoDIMM known as DDR3-Low Voltage or "DDR3L". Systems utilizing this generation of processors are not backward compatible with regular DDR3 memory modules. If a DDR3 SoDIMM memory module is inserted into the system, the system will not complete Power On Self Test (POST). DDR3L is a dual voltage capable memory SoDIMM, which supports operation at both 1.5V and 1.35V. DDR3L is also pin-compatible with DDR3. DDR3 is a single voltage capable memory SoDIMM, which supports 1.5V operation only. It is NOT compatible with systems using 4th gen Intel processors, which exclusively support 1.35V operation for memory. The DDR3L SoDIMM has "PC3L" whereas the DDR3 SoDIMM has "PC3"
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