Is this a limitation of DDR4 motherboard?

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   I have ASRock Z370 Gaming K6 and DDR4 G.Skill TridentZ 3600MHz C15 (2x8GB).
Can reach up to 4400MHz(2 sticks) with timing 19-19-19-39 1.45V without any issue. But can't boot into windows at 4500MHz with two sticks(dual channel). When I try with one stick it can boot into windows with timing 19-19-19-39 1.475V. (Each one stick is work best on a single channel at 4500MHz with this mobo, timing 19-19-19-39 1.475V.)

So I want to know if this situation is a limit ddr4 for dual channel speed of the mobo, right?

And if there is a solution to skip this limitation how can to do that?
(In BIOS the maximun speed of DDR4 is 6300MHz in Listbox.)

Sorry about my Eng.

My system:
ASRock Z370 Gaming K6
Intel Core i7-8700K 5.3GHz AVX -1 (delided)
G.Skill TridentZ 3600C15 (2x8GB) OC to 4400MHz
MSI Geforce GTX 1050Ti Gaming X
AIO Cooler Master MasterLiquid ML360R RGB

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SiRoCu Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 03 Nov 2018 Location: Thailand Status: Offline Points: 18	Post Options Post Reply Quote SiRoCu Report Post Thanks(0) Quote Reply Topic: Is this a limitation of DDR4 motherboard? Posted: 08 Jan 2019 at 4:12am
	I have ASRock Z370 Gaming K6 and DDR4 G.Skill TridentZ 3600MHz C15 (2x8GB). Can reach up to 4400MHz(2 sticks) with timing 19-19-19-39 1.45V without any issue. But can't boot into windows at 4500MHz with two sticks(dual channel). When I try with one stick it can boot into windows with timing 19-19-19-39 1.475V. (Each one stick is work best on a single channel at 4500MHz with this mobo, timing 19-19-19-39 1.475V.) So I want to know if this situation is a limit ddr4 for dual channel speed of the mobo, right? And if there is a solution to skip this limitation how can to do that? (In BIOS the maximun speed of DDR4 is 6300MHz in Listbox.) Sorry about my Eng. My system: ASRock Z370 Gaming K6 Intel Core i7-8700K 5.3GHz AVX -1 (delided) G.Skill TridentZ 3600C15 (2x8GB) OC to 4400MHz MSI Geforce GTX 1050Ti Gaming X AIO Cooler Master MasterLiquid ML360R RGB

SiRoCu Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 03 Nov 2018 Location: Thailand Status: Offline Points: 18	Post Options Post Reply Quote SiRoCu Report Post Thanks(0) Quote Reply Posted: 10 Jan 2019 at 12:13am
	No reply... Is this an ASRock official board? Well I'll try on MSI or ASUS motherboard and tell my friends do not use this mobo. It's my mistake.
	ASRock Fatal1ty Z370 Gaming K6 Intel Core i9-9900K(Delid) G.SKILL TridentZ 3600CL15 (2x8GB) OC 4400MHz Cooler Master MasterLiquid ML360R RGB

RLGL Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 Jul 2018 Location: MN Status: Offline Points: 2025	Post Options Post Reply Quote RLGL Report Post Thanks(0) Quote Reply Posted: 10 Jan 2019 at 10:31am
	No matter whose board you are using there is a point where the overclock fails. That point is dependent on the components of each individual system. It can be a different point for two seemingly identical systems. Just because it is a computer does not mean it will do everything you want it to, there are limits.
	Asrock Z370 Gaming K6,Intel i7 8700K, Asrock x570 Taichi