The memory should be able to operate at 1600 in that configuration. If there is any memory populated in slots 9-12 then the max speed is 1333. Also, all memory will operate at the speed of the slowest module. I suggest that you double check that all memory is dual or single rank and 1600. Also, make sure the BIOS is updated, memory support is something that is commonly updated with the BIOS.
Also, I'm assuming these are registered/buffered modules since I doubt UDIMMs are available in 16GB sizes. If they are UDIMMs, UDIMMs operate at a max of 1333 if there is memory in slots 5-8. Memory speed is covered on page 40 and 41 in the manual.
Daniel My
10 Elder
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6.2K Posts
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July 3rd, 2019 15:00
Hello
Your configuration sounds correct.
16GB in 1-4
8GB in 5-8
The memory should be able to operate at 1600 in that configuration. If there is any memory populated in slots 9-12 then the max speed is 1333. Also, all memory will operate at the speed of the slowest module. I suggest that you double check that all memory is dual or single rank and 1600. Also, make sure the BIOS is updated, memory support is something that is commonly updated with the BIOS.
Also, I'm assuming these are registered/buffered modules since I doubt UDIMMs are available in 16GB sizes. If they are UDIMMs, UDIMMs operate at a max of 1333 if there is memory in slots 5-8. Memory speed is covered on page 40 and 41 in the manual.
http://www.dell.com/support/
Thanks