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buggytech
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Dell xps 8900 adding more ram

Hey guys,

My Dell xps 8900 have 8Gb ram (4Gb x2) DDR4 2133 UDIMM. Currently it has 2 empty slots. I just bought an 8Gb (8Gb x1) ram DDR4 -2133 UDIMM Crucial stick. I make sure it has the same CL, voltage, etc. I run Crucial scan and it says this stick is compatible with the Dell 8900. My question is can I just add this single stick to the system to make it a total 16Gb, if so which slot do I put it in? so it will end up with 4x2 sticks and 8x1 stick.  I've read somewhere saying the Dell xps 8700 wouldn't boot if the dual slots are not filled up. Mine is a Dell xps 8900, however.

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3 Replies
7- Thorium

RE: Dell xps 8900 adding more ram

Ummm....you have a problem...

The XPS 8900 has 4 RAM slots. So in order to install one new 8GB module, you'd have to uninstall one of the existing 2GB modules.

Even if you do that, the XPS 8900 doesn't support 14 GB of RAM (3x2GB + 1x8GB =14GB). The supported configs are:  8 GB, 16 GB, 24 GB, 32 GB, and 64 GB.

And it's always best to install RAM in matched pairs. So you probably need to remove all four 2GB modules and install 2x8 GB to get 16GB. Or, if crucial will take the 8 GB back, you may be able to exchange it for 4x4GB to get 16 GB, assuming that works out cheaper.

EDIT: If you might ever want to go above 16 GB, it might be prudent to use 2x8 GB now which will leave you with 2 empty slots in which you could install 2x4GB (for total of 24 GB), or 2x8GB (for total of 32 GB).

Ron

   Forum Member since 2004
   I am not a Dell employee

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buggytech
1 Copper

RE: Dell xps 8900 adding more ram

Hey Ron, thanks for the reply. Sorry for some confusion in my original post. My Dell 8900 has 4 slots with 2 slots filled (4Gb stick each slot). So currently it has 8Gb RAM and still has 2 empty slots. I want to add another 8GB RAM stick to one of the 2 empty slots. So the final config would be 16Gb RAM with 4Gb x2 and 8Gb x1. Is it possible to do this?

I won't mind buying another 8Gb RAM stick to make it total 24Gb but it would be overkill for my use. Also I don't want to remove the original 2x 4Gb RAM that comes with the machine.

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7- Thorium

RE: Dell xps 8900 adding more ram

Matched pairs..

May not boot with 2x4GB plus 1x8GB, even though that totals 16GB which is a supported amount.

You never have enough RAM...

Ron

   Forum Member since 2004
   I am not a Dell employee

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