4x8gb HyperX Predator 4000mhz OC issue

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6 Jan 2021
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Hi there so I'm having an issue with getting 4x 8GB HyperX Predator 4000mhz sticks to run at 4000mhz together.

Motherboard: MSI X470 Gaming Plus Max
CPU: Ryzen 7 3800X

So I started off with 2 individual HyperX Predator sticks that have ever so slightly different models: HX440C19PB3A/8 and HX440C19PB4A/8 (the "/8" just means it's 8gb) and I was able to run those at 4000mhz together no problem. Then I bought 2 more which actually came as a pair both with the model HX440C19PB4AK2/16 (the "K2/16" means kit of 2 16gb).

I so even though 3 of the sticks are HX440C19PB4A and 1 is HX440C19PB3A, they all work fine in a single pair at 4000mhz but when all 4 of them are in they can barely even run at 3200mhz.

Any advice or suggestions?
Am I doing anything wrong?

Thank you :)
 
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