your original ram is bad (1Rx16) and any other module you install will be capped by the original. If you need graphics performance, recommend installing 2 Fury Impact 3200MHz CL20. Keep your original ram in case you need to claim the warranty. dell will want the original system to service. if you don't use tasks with high demand for graphics performance, you can buy any mainstream 3200mhz CL22. Crucial, Kingston, Adata, Samsung, Hynx....
my laptop dell inspiron 15 5510  , i have  sk hynix  8 gb 3200  mhz sodimm ram , i want to upgrade my ram capacity  to 16 gb, so i want to buy corsair 8 gb 3200 mhz sodimm , mixing other brands ram can be a problem for dual channel performance . please suggest me ! i cant find in market sk hynix 8 gb ram so , can i use sk hynix instead corsair ??
can i mix sk hynix 8 gb 3200 mhz sodimm with corsair vengence 8 gb 3200 mhz 
sodimm ram