What speed ram do I need for my laptop?

legendaryc4

Reputable
Jul 19, 2014
67
0
4,640
I have a HP Probook 4520s, with 2 GBS of ram and a i3 370m. I want to add another 2 GBS to get 4GBS. Do I need to buy the same exact speed ram or??
 
That CPU is only rated for DDR3-800 or DDR3-1066.
If keeping both RAM sticks, they need to run at exactly the same speed.
You may only be able to buy faster rater RAM now, but it should work at the lower speed.
Make sure you are buying laptop memory (SODIMM) rather than desktop memory (DIMM) as the slot is different.