Thanks for your answers.
I come to ask your advice on what RAM installed instead of the standard Samsung
Samsung DDR3 PC3-12800 (800 MHz) M378B1G73DB0-CK0 1.50 Volts
I hope not to bore you with all these specifications but I am writing in the hope can be useful to center the best choice.
(translation by Google)
I'm not an expert on RAM and wonder if there are compatibility problems with these:
Solution A
HyperX FURY Memory Red - 8GB Module - DDR3 1866MHz CL10 DIMM
Numero di parte: HX318C10FR/8
Specifiche: , DDR3, 1866MHz, CL10, 1.5V,
Solution B
Or those that seem most efficient:
Beast - 32GB Kit* (4x8GB) - DDR3 1600MHz Intel XMP CL9 DIMM
Numero di parte: KHX16C9T3K4/32X
Specifiche: DDR3 , 1600MHz , CL9 , 1.5V , Unbuffered
Profile 1: 1600MHz, 9-9-9, 1.5V
Solution C
Beast - 32GB Kit* (4x8GB) - DDR3 2400MHz Intel XMP CL11 DIMM
Numero di parte: HX324C11T3K4/32
Specifiche: DDR3 , 2400MHz , CL11 , 1.65V
Timings: 2400MHz, 11-13-14, 1.65V; 2133MHz, 11-13-13, 1.6V
Thank you very much
Alex
My pc: G30AK - Intel i7 4790k Socket 1150 LGA - Intel Z97 rev. 00 - Intel Haswell rev. 06 - RAM samsung DDR3 16GB - Nvidia GTX980 4GB GDDR5 - HDD toshiba 2TB - SSD kingston 256GB - BD Writer -Lan10/100/1000 - alimentatore ATX 700 W - Wireless LAN - Bluetooth 4.0.