Can't run RAM over 2667MHz on Z370 Pro4

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   Dear Noob3000,

Thanks for posting!

Let's see, when two memory modules are installed, it is recommended to install the A2 and B2 slots.

If the problem remains, kindly try the following to troubleshoot. 
1. Install only one RAM to the B2 slot and XMP to 3200MHz.
2. Try the same with the 2nd RAM on the B2 slot.

If both of the RAM work at 3200MHz on the B2 slot and also on the A2 slot, if possible, please try with a different CPU to see if it will work.

With thanks,
ASRock TSD

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ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8907	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Topic: Can't run RAM over 2667MHz on Z370 Pro4 Posted: 11 Jan 2021 at 3:50pm
	Dear Noob3000, Thanks for posting! Let's see, when two memory modules are installed, it is recommended to install the A2 and B2 slots. If the problem remains, kindly try the following to troubleshoot. 1. Install only one RAM to the B2 slot and XMP to 3200MHz. 2. Try the same with the 2nd RAM on the B2 slot. If both of the RAM work at 3200MHz on the B2 slot and also on the A2 slot, if possible, please try with a different CPU to see if it will work. With thanks, ASRock TSD

colin538a Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Jul 2025 Status: Offline Points: 15	Post Options Post Reply Quote colin538a Report Post Thanks(0) Quote Reply Posted: 13 Jul 2025 at 9:26pm
	ASRock Z370 PRO4, LGA1151 Asgard Bragi V3 DDR4-3600 MHz CL14 Samsung B-DIE i5 8400 also started on 2667 I sent the timings with a screenshot https://gyazo.com/d30034d97f7cb5da0511855b9b31132b https://gyazo.com/8cea84340b187da693607e1eb6f12d17 A2 B2 don't work even though they say to stick it in there. https://gyazo.com/eb6ca9624a170659799d668c7558eae6 overclocked system agent, and FCLK was about 2700mhz but the system does not start from the first time and makes 1 reboot so was from Kingston Praetor at 3000mhz