Z370 EXT4 Ram problem

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   I have Asrock Z370 Extreme 4 and a i5 8400 using this RAM:https://www.corsair.com/ca/en/Categories/Products/Memory/Vengeance-PRO-RGB-Black/p/CMW16GX4M2A2666C16
These Ram sticks have bus 2666 but when i choose xmp profile 1 2666mhz, PC cant boot to Win so i must reboot and choose Auto (bus 2133 default). I think it is newest Ram so my MB cannt work properly, it right?

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haduy Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Mar 2018 Status: Offline Points: 8	Post Options Post Reply Quote haduy Report Post Thanks(0) Quote Reply Topic: Z370 EXT4 Ram problem Posted: 23 Aug 2018 at 10:41pm
	I have Asrock Z370 Extreme 4 and a i5 8400 using this RAM: https://www.corsair.com/ca/en/Categories/Products/Memory/Vengeance-PRO-RGB-Black/p/CMW16GX4M2A2666C16 These Ram sticks have bus 2666 but when i choose xmp profile 1 2666mhz, PC cant boot to Win so i must reboot and choose Auto (bus 2133 default). I think it is newest Ram so my MB cannt work properly, it right?

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8937	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 24 Aug 2018 at 9:41am
	Dear Haduy, Thank you for choosing ASRock. Regarding your case, we provide some suggestion to try. 1. Install the memory at A2, B2 slots. 2. Install each memory at each slot to try. Thank you! Yours truly, ASRock TSD

haduy Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Mar 2018 Status: Offline Points: 8	Post Options Post Reply Quote haduy Report Post Thanks(0) Quote Reply Posted: 24 Aug 2018 at 11:25pm
	Thanks for your support, i update Bios to 3.1 and it works well :D