DDR3 RipjawsX freezing

[M4R5]

I've just installed some new RipJawsX (4GB x 3: F3-12800CL9T-12GBRL). Since installing
it, my system occasionally freezes shortly after start-up. I've asked
around the internet and the only thing people can think of is changing
the voltage, but the voltage is correct at 1.5v (and automatic). When I
put my old RAM back in, the system is stable.

I have a Gigabyte motherboard (X58A-UD3R) and the memory mode is set to
"standard".

Can anyone think what might be wrong?

Thanks

[Tradesman]

Might try at 1.55, not all mobos channel the correct amount of voltage to components as they show in BIOS

[GSKILL TECH]

Did you input the proper settings in BIOS? How about enabling XMP?

Thank you
GSKILL TECH