Help to buy gaming laptop?

[DeeL]

OK, I am thinking to buy a gaming laptop, but I don`t know what is important to look for?
Any Ideas?

 

[DeeL]

Hi DomBruv My budget is £800. playing games sort of Assassin`s Creed Origins

 

[DeeL]

I searched online and I found MSI GL62M 7REX, Processor Core i7, 8 GB RAM 256 GB SSD and 1TB HDD, With graphics GeforceGTX 1050 TI
http://priceoff.co.uk/deal/msi-gaming-notebook-review/ it`s a bit over budget but if I wait few weeks may be I will manage to buy it. Is this good gaming laptop?