08-12-2013 09:29 AM - edited 08-12-2013 11:00 AM
Hello, I recently purchased a T430s with 4GB of RAM. I would like to upgrade the RAM and almost purchased a 4GB PC3-12800 (DDR3-1600) chip bringing the total to 8GB, but thought that maybe it would be nice to have more. I don't want to purchase 2x8GB for a total of 16GB (don't want to remove the keyboard), but was wondering if I could purchase 1x8GB chip and use it with the existing 4GB for a total of 12GB? If there are parity issues and won't be running optimally, then I'm fine just adding another 4GB for a total of 8. Just thought I'd ask the experts, and thanks in advance for your help!
08-12-2013 10:40 AM
There is actually only one memory slot where you can install extra RAM. The other 4GB of RAM is actually soldered onto the motherboard and cannot be removed. To answer your question, yes, you can use that 8GB memory module with the existing 4GB one.
08-12-2013 11:05 AM
08-12-2013 11:09 AM
It's hard to find the correct information, but I'm assuming that the configuration is like the T430 where there is one slot under the keyboard and one in the back. I only want to add one to the back and was wondering if it is possible to add 1x8GB for a total of 12GB, or if they must be paired (2x4 or 2x8). Thanks again!
08-12-2013 11:25 AM
That is odd. The hardware manual and service videos only show one DIMM slot on the bottom of the computer for the T431s, and there doesn't seem to be videos or pictures of another slot under the keyboard. Crucial's website also shows only a single slot available: Link. Are there any other people that could possibly chime in?
08-12-2013 11:51 AM - edited 08-12-2013 11:52 AM
The hardware manual shows 2 slots for both the T430 and the T430s - 1 under the keyboard and 1 in the back. 12GB works fine. (1 X 4GB + 1 X 8GB) The original post was talking about a T430s. The reply changed the title to T431s. T431s has 4GB soldered and 1 slot
08-12-2013 12:25 PM
08-12-2013 01:06 PM - edited 08-12-2013 01:07 PM
>>> I purchased a T430s
The T430s has a RAM slot under the keyboard and a second RAM slot on the underside.
The GB capacities of two RAM sticks don't have to match. For example, 4GB + 8GB. The Intel memory controller does its magic to treat the pair as dual-channel.
When buying the second RAM stick, just remember: 204-Pin DDR3 1600.
08-12-2013 01:51 PM
Ah, I see now. I kept thinking that we were talking about the T431s, not the T430s. In this case, then yes, there will be 2 slots for RAM like others have said. As long as the RAM type is the same, you can still mix and match RAM sticks with different capacities or even different brands.