My new HP Envy 750xt uses PC-12800 DDR3 1600 DRAM, but I don't know what voltage it runs from. Is there a way to tell? I didn't see anything in the bios. Does it matter which voltage the DRAM is specified at? Is Crucial Ballistix Sport 8GB Kit (4GBx2) DDR3 1600 (PC3-12800) 240-Pin UDIMM Memory BLS2KIT4G3D1609DS1S00/BLS2CP4G3D1609DS1S00 a good choice? What will work at a good price?