just received micron ddr2 4200u yesterday & the chip were d9dgk

havent test any higher than 400Mhz yet, but im wondering is micron chippy need higher vdimm than hynix c4?

i would say it depend on the chipset used on the RAM
at default on their respected speed, mostly run on 4-4-4-12 but when it come into overcloking, the one with more potential chip would maintain tight timing at higher speed

u know what i mean..