View Full Version : Laptop Ram

09-10-2013, 11:06 AM
I want to buy more RAM for my laptop. It's a Dell Inspiron 15R Special Edition and I know that it has a slot for an extra 4GB. FYI I'm also running Win 8 64 bit.

I've never installed or bought RAM before, but the current 4GB RAM in my laptop says it is "4GB 2RX8 PC3-12800S-11-11-FP". I looked online and found these two models:
I'm just wondering if they are both compatible with my laptop and what the differences are between them i.e. why is one more expensive than the other?


Speedy Gonzales
11-10-2013, 08:20 AM
If this is it, (http://www.dell.com/nz/p/inspiron-15r-5521/pd.aspx?ST=dell%20+inspiron%2015r&dgc=ST&cid=33191&lid=783213&acd=1059062008234143) it looks like it uses DDR3L ram, the ram you posted. Well it's 1600 mhz

11-10-2013, 08:48 AM
Which is correct depends on which specific model of 15L you have. Some require DDR3L (the $79 SODIMM you've linked), some require DDR3 (the $69 SODIMM you've linked). Dell list the Special Edition as standard DDR3, but also say it comes with 8GB standard. So, do you have a specific model number?

11-10-2013, 10:58 AM
Ahhh! I found it. The parts list when I bought it says it has 4GB 1 DIMM (4GB x1) DDR3 1600Mhz
BTW the model is Inspiron 15R (7520).
So I should get the $69 one?

Cool, thanks for your help.

11-10-2013, 11:15 AM
Yes, the 7520 will be the 1.5V $69 SODIMM. Dell still show it as coming with 8GB standard (http://www.dell.com/nz/p/inspiron-15r-se-7520/pd), weird - they must have upped it at some stage.

11-10-2013, 11:18 AM
It's probably because I got it last year - I upgraded from Win 7 to Win 8. And I haven't got a touch screen.

Thanks for all your help!