Upgrading hp pavilion sleekbook 14 b120dx

[Patronpapii_]

Hi I got an pavilion sleekbook 14 b120dx D1G59UA

with and i3 core. I love the look that’s why I’m thinking of just upgrading the processor to and i5 or i7 but i read that this model has a non-replaceable CPU and non-replaceable UMA graphics. So I should replace the entire system board with one that has the CPU I wanted. But i just want to know what to replace it with. I did some research and also saw that it was possible to upgrade the ram with two 8gb Ram making it 16gb Ram and was wondering is I could insert 1Tb ssd because upgrading the Ram and the SSD will be my first move. 

basically i want to know what system board would be okay to replace it with 

thanks in advance.

[banhien]

@Patronpapii_ 

Its specs

           https://support.hp.com/au-en/document/c03661085

It is a very old machine and manual for the series is

          http://h10032.www1.hp.com/ctg/Manual/c03721290.pdf

1. RAM: Manual (page 4) says it support 8GB max. Crucial also confirmed. It has 4GB now, you can upgrade to 8GB by adding same 4GB to slot 2 or using following compatible RAM

                  https://www.crucial.com/memory/ddr3/ct51264bf160b/ct4871598

2. STORAGE: You can replace 2.5" HDD with 2.5" SATA SSD using

                   https://www.crucial.com/products/ssd/crucial-mx500-ssd

                  https://www.samsung.com/semiconductor/minisite/ssd/product/consumer/860evo/

         Or similar from reputable vendors.

Regards.

[Patronpapii_]

https://www.crucial.com/compatible-upgrade-for/hp---compaq/pavilion-sleekbook-14-b120dx

I guess Crucial confirmed two things 🤔

but thanks. Already read the manual 
thought about changing the motherboard too

It said that the 721215-501 was compatible to upgrade it to an i5 core.

Also planning to put two 8gb hyperx ddr3 ram

and 1tb samsung evo ssd

hoping it’ll be compatible and might speed the pregistoric laptop out.