Question Underclocking memory stability

Jan 8, 2020
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Hello,
MB: Asus Z170M-Plus
Processor: i5-6600K
RAM: Kingston HyperX FURY 2x4GB 2133MHz DDR4 CL14 (old ones)
Decided to upgrade RAM and bought Kingston HyperX FURY 2x8GB 3000MHz DDR4 CL15.
As I replaced them I couldn't boot the system at all, so i put the old one's back and set RAM speed manually to 2133 MHz and put in the new one. Now the system runs fine @ 15-15-15-35 timings. Soo is it fine runing at these clock speeds or should I change smth or maybe even return RAM ?

FACTORY TIMING PARAMETERS
JEDEC: DDR4-2400 CL17-17-17 @1.2V
XMP Profile #1: DDR4-3000 CL15-17-17 @1.35V
XMP Profile #2: DDR4-2666 CL15-17-17 @1.35V

Thx in advance
 
Last edited:
Jan 8, 2020
2
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Tried to use #2 profile seems to boot fine. Don't understand why i couldn't Boot pc when i replaced them. as boot i mean it was beeping
 

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