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Correct Memory Configuration for R430
Hello,
I have a Dell R430 with dual processor.
It currently has 4x32GB PC4-2133 memory modules working (128GB).
From a decommissioned server, I have available 8x16GB PC4-2400 which I'd like to add to this server to total 256GB but I'm confused with where to put each module to make the configuration valid. I've read what seem like conflicting information about how many modules can be used for CPU1 and for CPU2.
Could someone kindly clarify where each module should go given the above configuration?
Do I need to put the 3x32GB in B1-B4 and the 8x16GB in A1-A8? This seems to be what this doc indicates? https://qrl.dell.com/Files/en-us/Html/Manuals/R430/System%20memory=GUID-D04A3623-2BA6-4C99-BBAD-298891A1BEBF=1=en-us=.html
I understand the memory speed will be lowered to 2133 as it is the lowest speed out of both.
Thanks in advance!
Hi, thanks for your reply.
This is what I meant about conflicting info.
The page you referenced (page 82) says this:
In a dual-processor configuration, the memory configuration for each processor should be identical. For example, if you populate socket A1 for processor 1, then populate socket B1 for processor 2, and so on. ● Memory modules of different capacities can be mixed provided other memory population rules are followed (for example, 4 GB and 8 GB memory modules can be mixed).
But the page I referenced (also Dell) says this:
Memory channels are organized as follows:
Processor 1channel 0: memory sockets A1 and A5channel 1: memory sockets A2 and A6channel 2: memory sockets A3 and A7channel 3: memory sockets A4 and A8Processor 2channel 0: memory sockets B1channel 1: memory sockets B2channel 2: memory sockets B3channel 3: memory sockets B4So based on this I'm assuming I can do this?
A1 - 32GB
B1 - 32GB
A2 - 32GB
B2 - 32GB
A3 - 16GB
B3 - 16GB
A4 - 16GB
B4 - 16GBDoes this mean I cannot use A5, A6, A7 or A8?
Does processor 2 really have less sockets than Processor 1?
DELL-Young E
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Posted February 2nd, 2021 17:00
Hi,
this is how it should be done, if I could add:
Table 2. Memory configurations—two processorsSYSTEM CAPACITY (IN GB)DIMM SIZE (IN GB)NUMBER OF DIMMSDIMM RANK, ORGANIZATION, AND FREQUENCYDIMM SLOT POPULATION8421R, x8, 2400 MT/s,
1R, x8, 2133 MT/s,
1R, x8, 1866 MT/s
A1, B116441R, x8, 2400 MT/s,
1R, x8, 2133 MT/s,
1R, x8, 1866 MT/s
A1, A2, B1, B2
821R, x8, 2400 MT/s,
1R, x8, 2133 MT/s,
1R, x8, 1866 MT/s
A1, B124461R, x8, 2400 MT/s,
1R, x8, 2133 MT/s,
1R, x8, 1866 MT/s
A1, A2, A3, B1, B2, B3
32481R, x8, 2400 MT/s,
1R, x8, 2133 MT/s,
1R, x8, 1866 MT/s
A1, A2, A3, A4, B1, B2, B3, B4
842R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, A2, B1, B21622R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, B1484122R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4862R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, A2, A3, B1, B2, B3
64882R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, A2, A3, A4, B1, B2, B3, B4
1642R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, A2, B1, B23222R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, B1968122R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, A2, A3, A4, A5, A6,A7,A8, B1, B2, B3, B4
1662R, x8, 2400 MT/s,
2R, x8, 2133 MT/s,
2R, x8, 1866 MT/s
A1, A2, A3, B1, B2, B3
1281682R, x4, 2400 MT/s,
2R, x4, 2133 MT/s,
2R, x4, 1866 MT/s
A1, A2, A3, A4, B1, B2, B3, B4
3242R, x4, 2400 MT/s,
2R, x4, 2133 MT/s,
2R, x4, 1866 MT/s
A1, A2, B1, B216016 and 8122R, x4, 2400 MT/s,
2R, x8, 2400 MT/s,
2R, x4, 2133 MT/s,
2R, x8, 2133 MT/s,
2R, x4, 1866 MT/s
2R, x8, 1866 MT/s
A1, A2, A3, A4, A5, A6,A7,A8, B1, B2, B3, B4
NOTE: 16 GB DIMMs must be installed in slots numbered A1, A2, A3, A4, B1, B2, B3, and B4 and 8 GB DIMMs must be installed in slots A5, A6, A7, and A8.19216122R, x4, 2400 MT/s,
2R, x4, 2133 MT/s,
2R, x4, 1866 MT/s
A1, A2, A3, A4, A5, A6,A7,A8, B1, B2, B3, B4
3262R, x4, 2400 MT/s
2R, x4, 2133 MT/s
2R, x4, 1866 MT/s
A1, A2, A3, B1, B2, B3
2563282R, x4, 2400 MT/s
2R, x4, 2133 MT/s
2R, x4, 1866 MT/s
A1, A2, A3, A4, B1, B2, B3, B4
38432122R, x4, 2400 MT/s
2R, x4, 2133 MT/s
2R, x4, 1866 MT/s
A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4
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Posted February 2nd, 2021 17:00
R430 have 8 DIMM slots for CPU1 and 4 DIMM slots for CPU2. You can try populating 32GB DIMM's on A1,A2,B1 and B2 and remaining slots 16GB DIMM's.
DELL-Chris H
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Posted February 2nd, 2021 13:00
Gavin2812,
Would you confirm the part number for the dimms, it may be a compatibility issue?
If you go to page 82 here you can find the guidelines for the dimm population, as well as table 40 on page 85.
Let me know if this helps.
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