In this post I explain how to replace or upgrade memory (aka RAM) in a Dell Latitude D830 notebook. Also, these instructions should work for a Dell Latitude D820 notebooks and maybe some other models. Please mention you notebook model in the comments if this guide works for you.
You can check the amount of installed memory in the BIOS setup menu. As you see, in my laptop I have 1024MB (or 1GB) memory installed.
Dell Latitude D830 notebook requires DDR2 memory modules. You should use PC2-5300 SODIMM memory which runs at 667MHz.You can use same memory type for a Latitude D820 notebook too.
Dell Latitude D820/D830 can take up to 4GB memory total. You can install up to 2GB memory in each slot (there are two slots available).

Now the tricky part.
If you remove the memory slot cover from the bottom of the notebook, you’ll find only one slot – DIMM B. Where’s the first slot – DIMM A?
It’s hidden under the keyboard. Yep, in order to access the first memory slot we’ll have to remove the keyboard.

Before you start, please turn off the laptop, unplug the AC power adapter and remove the battery.
STEP 1.
Lift up one side of the keyboard cover with a small flat head screwdriver.

STEP 2.
Remove the keyboard cover.

STEP 3.
Remove three screws securing the keyboard.

STEP 4.
Lift up the keyboard and placed it on the display panel or palm rest, so you can access the memory slot A. Be careful, the keyboard is attached to the motherboard via a flat ribbon cable. Are you replacing the keyboard? You can get a new one here.

STEP 5.
The memory slot A is located just above the touch pad buttons.
In order to remove the existing memory module carefully spread latches on both sides of the memory slot.

The memory module will pop up at a 30 degree angle.

Pull the memory module from the slot A by the edges.

The slot DIMM A is empty and you can install a new RAM module in there.

In this notebook memory can run in dual-channel mode which doubles the amount of available memory bandwidth and improves the notebook performance.
In order to run your notebook dual-channel mode you must have two identical memory modules in slots A and B.
For example, if you have a 1GB module installed into the slot A, you have to install an identical 1GB module into the slot B. In this case the total amount of memory installed into the notebook will be 2GB and will run in dual-channel mode.
Here’s another example. You have a 1GB module in the slot A and install a 2GB module into the slot B. In this case the total amount of memory installed into the notebook will be 3GB but it will run in regular mode, not dual-channel mode.
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November 30th, 2009 at 2:22 pm
i have a dell latitude D 810 and already have the max 2 gb memory ( 1 gb x 2) I was told by dell that thats the max it can handle. are you saying i can put 2gb x 2 to a total of 4 gb?????
November 25th, 2009 at 2:13 pm
128 MB of display drivers memory will take some of from main memory on 32 bit system.
November 15th, 2009 at 1:19 pm
viosabio,
I believe they recommend installing the same brand in both slots, but if you have two identical modules (size and speed), you should be fine.
November 15th, 2009 at 1:16 pm
Thanks for this info, it was very helpful and i managed to install my 2 x 2GB memory modules without breaking the computer or damaging it.
Just a question about the dual channels, does it matter if i install 1 module 2GB Samsumg and 1 module 2GB Hynix?
November 9th, 2009 at 3:05 pm
many thanks. upgrading my d820 was much less painful than my first thoughts. can’t say as i agree with putting dimm a under the keyboard; what a pain to get at!!
November 1st, 2009 at 5:07 pm
Apparently D830 supports 8gb ram with latest bios update, and 6gb without update (2+4gb). Might be true for other models with same intel chipset.
October 15th, 2009 at 10:21 am
Thanks a lot! These instructions work perfectly for a Latitude 620 as well.
October 1st, 2009 at 3:11 pm
Mahalo, you just saved me so much money, I do have to let the geeks do it…
September 29th, 2009 at 11:34 am
The Intel Core 2 Duo T7300 processor in my Dell Latitude D830 is very fast.
Here is a discussion of the performance: http://bit.ly/1UbiZb
September 7th, 2009 at 5:49 am
J. Taylor: thats normal with 32-bit operating systems.
they can only adress 4GB of memory (this includes your videocard memory and all other internal memory too)
you can solve this by using a 64-bit OS