MSI GE60-2PCi745FD Ram Upgrade

I recently bought a new laptop and i went with MSI GE60-2PCi745FD and got it for 769€. The specs are :

Intel® Core™ i7-4710HQ Prozessor (bis zu 3,5 GHz), Quad-Core
39,6 cm (15") Full HD 16:9 LED Display (matt), Webcam
4 GB RAM, 500 GB Festplatte, DVD Brenner
NVIDIA GeForce GTX 850M Grafik (2048 MB), HDMI, USB 3.0, WLAN-ac, BT

Now i want to upgrade ram because 4gb is not enough and i found few 8gb but i don't know if they are compatible with with the already installed 4gb.
Im considering this:
1. KINGSTON HyperX Impact Black 8GB SO-DIMM 1600 MHz DDR3L CL9 80€
Connectivität 204pin
Kapazität 8192MB
Moduleanzahl 1x 8192MB
Spannung 1,35 Volt
Speichertyp Notebookspeicher
Standard DDR3L-1600 (PC3-12800)
Typ SDRAM-DDR3

2. 8GB Corsair ValueSelect RAM DDR3-1333 CL9 (9-9-9-24) SO-DIMM 76€
8 GB (RAM-Module: 1 Stück)
SO-DIMM DDR3 1333 MHz
CAS Latency (CL) 9
Anschluss:204-pin, Spannung:1,5 Volt

3. KINGSTON ValueRAM 8GB 1600MHz DDR3L SO-DIMM 79€

Connectivität 204pin
Capacity 8192MB
Number of modules 1x 8192MB
Voltage 1.3 volts
Memory Type Notebook memory
Standard DDR3-1600 (PC3-12800)
Type DDR3 SDRAM


My question is can i run them at the same time and get 12gb and which one is better?
Thanks