different memory sizes and latency in the two channels

kumarsaurabhraj

Honorable
Jun 8, 2013
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Hello i have recently contructed my haswell build with i7 4770 and asrock z87m extreme 4. I have a 2*4GB kit of 1866MHz 9-10-9-27 ram installed in one channel. Can i install 2*8GB kit of 1866MHz 10-11-10-30 ram in the other channel. Will it cause any problem?
 

tigerg

Honorable
Feb 24, 2013
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11,660
If you are building such a beefy computer, why are you putting different ram together? Go buy 16GB of the same ram. If you just plug all that stuff in, your computer will run at the speed of the slowest ram. Additionally, having to split your data between 2 dims and 1 dim on different channels will add extra latency on your system. It will most likely work, but you are handicapping a strong computer from the start.