Ram

[snmahaur]

Hi Sir, i have Hp 840 G1 my laptop has Samsung 4gb DDR3L RAM, so can i use 8gb ram other than Samsung and upgrade 4 to 12 gb?

[Paul_Tikkanen]

Hi:

Your PC can take a maximum of 2 x 8 GB of memory.

Eventually, you will want to remove the 4 GB module and replace it with an 8 GB module so the memory runs in the better performing DDR (dual data rate) mode.

When you install memory in mismatched capacities, or one memory slot is empty, the memory runs in the lower performing SDR mode (single data rate).

Below is the link to the service manual for your notebook.  The memory upgrade info can be found in chapter 1.

http://h10032.www1.hp.com/ctg/Manual/c04655205

[snmahaur]

I have already Samsung 4gb ram, and i need more 4gb, so can i install any other brand 4gb ram, like as- Kingston, crucial?

[Paul_Tikkanen]

Yes you can do that as long as the memory you buy has the same specs as the Samsung memory chip.

I have zipped up and attached a free utility below, that will tell you everything you ever wanted to know about the memory chip in your notebook now.