From all different brands of memory chips, the memory chip would have intervened the installation of the cpu heatsink, only if it’s taller than 43mm in height, but if you do, don’t panic, please see below for step II for our further explanation.

Step two would be recognizing the motherboards, please see below picture for your reference
(ASUS P7P55D, as shown in picture)

Proceeding onto step two, on whether the memory chips would be in the way of the cpu heatsink; if all slots are filled. Please first measure the distance between the centre point of the CPU HIS to the centre of the first memory slot, if it was shorter than 60mm, then you will be needing memory chips that is shorter than 43mm in height, anything more than that, you would be unsuccessful with the installation. (as shown in picture , the distance is 53mm, so first slot will not be able to use memory chip that is taller than 43mm.)
If you have measured that the distance between the centre of the CPU HIS to the centre of the first memory slot is more than 60mm. there will be no problem with your memory, even the tall HyperX could be filled in all the memory slots and still have no problem with the installation of the cpu heatsink.

• Distance from centre of CPU HIS to the first memory slot, not more than 60mm, only memory chip below 43mm in height
  can be used.
• If centre of the HIS to the first memory slot is more than 60mm in length, you are safe.
• The intervention between the cpu heatsink and the memory chips often occurs with motherboards with 1156 socket.

Below are all the memory specs that we could supply, if you want to know any other brands or willing to share your information with us, please mail it to HERE