Why am I getting a lower RAM speed than advertised?

Victor Ong March 20, 2013
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I have two sticks of Corsair ram found below:
http://www.corsair.com/vengeance-8gb-dual-channel-ddr3-memory-kit-cmz8gx3m2a1866c9.html

It says that the speed is 1866, but when I check my Windows 8 task manager, it shows up as 1033mHz. Why is this? I’m confused.

I am running it at the tested voltage of 1.5V. When I use my BIOS to go higher, the maximum I can go is 1600 mHz, and it BSOD very often if I do.

Thank you.

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