GPU and RAM stuffs

[Hadefication]

GPU

Can I SLI ZOTAC GTX 780Ti 3GB GDDR5 384Bit reference  with EVGA GTX780Ti GDDR5 3GB 384bit Graphic Card Dual Classified w/ ACX Cooler or EVGA GTX780Ti GDDR5 3GB 384bit Graphic Card SC w/ ACX Cooler? 

 

RAM

Is it okay to have 2 kits of 2x4 (16GB) to achieve 4x4 kit (16GB)? Should I worry on something or problems on having this setup? Or, is it possible? The reason for this is that the store that im getting my ram kits has no stocks for 4x4 kit and it may take a month to order online since I'm from Philippines. Im getting corsair dominator platinum.

 

 

Thanks in advance!

 

 

 

 

[SAV1OUR]

1.yes 

2. as long as the rams the same speed and your motherboard supports it yes 

[Oshino Shinobu]

1. Yes, but it can look strange with two different cards (just an opinion)

2. Yes, you can as long as they're running at the same speed (although a 1866MHz kit should still work with a 1600MHz kit as long as you down clock the 1866MHz kit to 1600MHz or overclock the other way.)