@Hagar23 I would put the two 16GB RAM modules in the white slots and the two 4GB RAM modules in the black slots. Note that 40GB is not a Dell-listed configuration but folks have been able to get it to work.
What 16-GB modules did you get? That's important because Dell PCs can be fussy about RAM, even if it matches the correct specs. Is it DDR4 and what speed?
Specs don't list 40 GB (2x4 + 2x16 GB) as a supported RAM config. Doesn't mean it won't work because the specs only list configs that Dell tested/validated.
Put the two 16-GB modules in black slots and boot up. Worst that can happen is PC won't boot. And if it won't boot, remove 2x4 GB from white and move the 2x16 into white. See if it boots that way. If it doesn't boot with only 2x16 in white, the RAM may not be compatible with this PC.
I was just thinking to remove the 2 four gig completely since 32 gig is way more than the 8 I had. Any reason to keep the two 4 gig sticks attached? Other than to just have a bit more?
Tesla1856
8 Wizard
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17.3K Posts
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April 26th, 2023 11:00
1. That's what I would do. Remember, you want Dual-Channel Operation.
Hopefully (old) XPS-8910 can handle 16gb DIMMs. Due to the machine's age, I would have probably gone with 8gb dimms x 4 (all matching).
2. Not that I can think of. 16gb total would be enough for this machine unless you are running VT. You are pretty-much limited to Windows-10 (64 bit).
Vic384
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April 25th, 2023 16:00
@Hagar23 I would put the two 16GB RAM modules in the white slots and the two 4GB RAM modules in the black slots. Note that 40GB is not a Dell-listed configuration but folks have been able to get it to work.
RoHe
10 Elder
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45.2K Posts
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April 25th, 2023 17:00
What 16-GB modules did you get? That's important because Dell PCs can be fussy about RAM, even if it matches the correct specs. Is it DDR4 and what speed?
Specs don't list 40 GB (2x4 + 2x16 GB) as a supported RAM config. Doesn't mean it won't work because the specs only list configs that Dell tested/validated.
Put the two 16-GB modules in black slots and boot up. Worst that can happen is PC won't boot. And if it won't boot, remove 2x4 GB from white and move the 2x16 into white. See if it boots that way. If it doesn't boot with only 2x16 in white, the RAM may not be compatible with this PC.
EDIT: @Vic384 typed faster than I did, again...!
Hagar23
3 Posts
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April 26th, 2023 07:00
I was just thinking to remove the 2 four gig completely since 32 gig is way more than the 8 I had. Any reason to keep the two 4 gig sticks attached? Other than to just have a bit more?
Thanks
Hagar23
3 Posts
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April 26th, 2023 07:00
this is the crucial RAM that I bought. It is the one that the crucial tech said to buy:
Crucial RAM 16GB DDR4 2400 MHz CL17 Desktop Memory CT16G4DFD824A
RoHe
10 Elder
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45.2K Posts
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April 26th, 2023 12:00
Specs don't list 2x16 GB as validated but they do list 4x16 so 2x (32 GB) should work.
If you don't think you'd need 40 GB of RAM, assuming it will boot that way, you can remove them.
Tesla1856
8 Wizard
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17.3K Posts
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April 26th, 2023 13:00
Oh, good.
Surprising for a machine of this age, but good. With latest (final) BIOS/Firmware, they should work (in one Memory Bank or the other).
CPU-Z will tell you if it's running Dual-Channel.