RAM frequency reads lower than it should?

Hello all,

I have the following system setup, please let me know if you require further information.

I'm in the U.S.

i5-2500k
MSI 560 GTX Ti
MSI P67A-GD65
Dominator GT 8g (2x4g) 1.65v 2000

While I understand this is technically not the best RAM for a Sandy Bridge system, I expected it to run at least at 1333... or at least expected with tweaks I could make it run at 1333. However, at default settings the v is at like 1.4+ and the memory reads at 1066 (533) in both the MSI Control Center and Prime95. After following some advice, I went into my UEFI and upped the v to a few different settings, all in the 1.5+v range, never exceeding 1.6ish (I know the recommended for my system is 1.5v with a max I believe of 1.65), and set the D-RAM frequency to 1333.

I have noticed no difference in any frequency/speed readings on the two above applications. Should I up the voltage to 1.65 and set the frequency to 1800 and see what happens? I would really like to get a bit more speed out of this RAM, but I am prepared to buy some sticks that are 1.5v rated if needed. I have been eying both the Vengeance RAM as well as some by G.Skill. I am new to overclocking, and in fact this is my first ground-up build.

If this 533 reading is standard, i.e. it is the "unclocked" base of this RAM model, is it always going to read this? I have "tested" my memory in my BIOS, with Windows, and I believe another program and have never received any memory errors. I guess I just want to make sure that I'm getting enough out of my memory sticks. I don't want or need to do extreme overclocks on them, but I would like to be running at a higher frequency than 1066.

Any information or advice is most appreciated.

Thank you!

HF