RAM nomenclature and compatibility with my system

[cowboi123]

Hi all, I recently bought a Dell Inspiron 7559 laptop. It came with an 8GB Skhynix "hmt41gs6bfr8a-pb no aa 1506" RAM stick. I recently ordered, from ebay, an additional 8GB RAM stick of what I thought was the same model. However, the seller sent me an 8GB Skhynix "hmt41gs6bfr8a-pb na aa 1511". Are they two completely different models because of their different nomenclature? Physically, one has a blue PCB whilst the other has a black PCB. Is it compatible to have them installed at the same time in my laptop?

Thanks 😀

 

[geofelt]

Ram must be matched.
That means speed, voltage, and cas numbers.

All you can do is install it and see if it works.

Ram vendors will have apps for upgrades.
You enter your laptop make/model and you will get a list of supported upgrades.

 

[cowboi123]

Ram must be matched.
That means speed, voltage, and cas numbers.

All you can do is install it and see if it works.

Ram vendors will have apps for upgrades.
You enter your laptop make/model and you will get a list of supported upgrades.

Thanks for the quick reply. Yes, I went to the Skhynix website to make sure , the speed, voltage, cas, mem dept, etc all matched. All the specifications of the 2 sticks matched. Unlike crucial or other vendors, I dont think sk hynix offers an app for upgrades depending of laptop make/model. The only info they provided about this stick is
https://www.skhynix.com/products.view.do?vseq=969&cseq=75

It didnt explain the difference between no aa 1506 and na aa 1511.

 

[geofelt]

Best to try the ram and see how you do.

 

[cowboi123]

I contacted Sk hynix..they told me it is "The same product just different from the work week." So I guess it should be fine.