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RAM modules differ although same model

Hey guys,

I've been using Kingston HyperX blue RAM for quite a  few builds now (approx. the last 3 years).

I also got 2x 4GB DIMMs for my last build in july. The issue is that these are 1600MHz but only run at 1333 otherwise it keeps crashing etc, and the BIOS automatically chooses 1333MHz. I should mention that these modules were not a kit. I got one of them earlier the year as an upgrade for my former build and the other one with rest of the parts, but I checked model numbers and they were the same. It was the same article from the same merchant so it should have been the same.

Now I had a look at my SPDs via CPU-Z:

ram.png

 

As you can see they actually are not the same.

For my next upgrade I had planned to buy these, should work since it's the other channel.

Any thoughts about my exisitng RAM?

 

Kind regards,

Trek

Bitfenix Phenom M White | ASUS RoG Maximus VIII Gene | Intel i7 6700K @4.6GHz | HyperX Savage 2800MHz CL14 DDR4 16GB | EVGA GTX1080 SC | Intel 750 Series PCIe SSD 400GB | EVGA SuperNova G2 550W | Windows 10 Professional x64 | Logitech G900, Corsair K70 RGB MXbrown O-ringed, BeyerDynamic DT880 (600 Ω) on Fiio E10K & Samson Meteor | Dell U2715H 27", Samsung SyncMaster P2450H 24", Samsung SyncMaster 931BF 19" | DIY Ambilight

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Can your mobo handle 1600mhz ram?

"Support for DDR3 2000(O.C.)/1866/1600/1333/1066 MHz memory modules" stated here

Bitfenix Phenom M White | ASUS RoG Maximus VIII Gene | Intel i7 6700K @4.6GHz | HyperX Savage 2800MHz CL14 DDR4 16GB | EVGA GTX1080 SC | Intel 750 Series PCIe SSD 400GB | EVGA SuperNova G2 550W | Windows 10 Professional x64 | Logitech G900, Corsair K70 RGB MXbrown O-ringed, BeyerDynamic DT880 (600 Ω) on Fiio E10K & Samson Meteor | Dell U2715H 27", Samsung SyncMaster P2450H 24", Samsung SyncMaster 931BF 19" | DIY Ambilight

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you need to set rated speed for rams manually.

Edit:now i realized you might need to increase volts on the rams to get them working together stable

Edited by Levent

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Try to increase the voltage a little and overclock the ram bus so they can act as a kit without any conflicts. 

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