I am considering purchasing a new laptop, specifically the Lenovo ThinkPad t580, which offers multiple memory configurations up to dual channel. Two of the many memory options (on the UK website) are:
16GB (8+8) DDR4 2400MHz SODIMM
24GB (8+16) DDR4 2400MHz SODIMM
When less than 16GB is in use, can the larger mixed 24GB(8+16) configuration ever perform worse than the matched 16GB(8+8) configuration? Or will the 24GB(8+16) behave exactly like 16GB(8+8) for the first 16GB of memory used?
There have been plenty of questions about mixing different sizes, speeds and brands of RAM, but in this case I would expect that the only difference between the 2 sticks of RAM would be the size. Also, I am only asking about the first 16GB of memory used, not the region from 16GB to 24GB, where I expect the larger, but mixed configuration would have the advantage for page fault reasons.
This laptop is not for gaming, but will potentially be hosting multiple databases (SQL Server, Oracle, SAP HANA) and virtual systems.