How to tell what type of ram is compatible

[darkbdk]

So my laptop has two RAM slots but one is broken. Currently I have one 4gb Ram Stick in there, but I want to know if I can put a 8gb in there.
Also im not sure what info you need to find out, so please tell.

 

[EasyLover]

What is the make/model of your laptop. Manufacturer's guide included in the laptop packing contains your required info.

 

[darkbdk]

Operating System: Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.140303-2144)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: HP ProBook 4540s
BIOS: Default System BIOS
Processor: Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz (4 CPUs), ~2.6GHz
Memory: 4096MB RAM
Available OS Memory: 3974MB RAM
Page File: 4046MB used, 3897MB available
Is this what you need?

 

[EasyLover]

Any Laptop RAM having 8GB capacity with 1.5v having speed of 1333MHz with 204pin DDR3 SO-DIMM can be used on this laptop. Some recommended models are as follow: -

http://www.newegg.com/Product/Product.aspx?Item=N82E16820233216
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231530

http://h10010.www1.hp.com/wwpc/pscmisc/vac/us/product_pdfs/HP_ProBook_4540s_datasheet.pdf

 

[darkbdk]

Thanks for the help but if I can ask a quick question, What is better about one vs the other?

 

[EasyLover]

Just brand differences. Both have same speed, same CL value, same voltage. Both will work.