Originally Posted by Snakes
Hi. I have a question that I was hoping someone here could answer. I was planning to buy the UD5H motherboard and I wanted to use Gskill Ripjaws X 1600MHz RAM. I'm not sure yet whether I'm buying a Sandy Bridge or Ivy Bridge CPU. I've read that this board does not support ram at 1600MHz unless you're using an ivy bridge CPU. Is this correct? I don't understand why this would be the case but I'd like to know more before I commit to buying. Thanks.
it means that only ive bridge CPU's officially support ddr3-1600, which is true, whereas sandy bridge CPU's only officially support ddr3-1333. It doesnt mean that you can't use ddr3-1600 with sandy bridge, it just means that anything over 1333 is technically an overclocked speed. As far as the new Z77 motherboards are concerned, you can overclock your RAM up to ddr3-2133 with a sandy bridge CPU, and ddr3-2600 + with an ivy bridge cpu.
SB + Z68 = max overclocked RAM multiplier of 21.33 (21.33 times 100MHz BCLK gives ddr3-2133)
SB + Z77 = max overclocked RAM multiplier of 21.33 (21.33 times 100MHz BCLK gives ddr3-2133)
IB +Z77 = depending on which MoBo you have, max overclocked RAM multiplier of 26.00 - 32.00 (times 100MHz BCLK gives ddr3-2600 all the way up to ddr3-3200)
SB memory controller only "officially" supports up to ddr3-1333, but you can go higher
IB memory controller only "officially" supports up to ddr3-1600, but you can go higher