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EXPO doesn't work - KF564C32BBEK2-64 - why?

piotrl
Level 8

Hi, 

I have x870e hero and KF564C32BBEK2-64. Expo 1 and 2 doesn't work. Only Expo on the fly works.

Shud I change KF564C32BBEK2-64 to KF564C32BBEAK2-64? This is practically the same, some have backlighting, some don't.

I have latest bios. What should I do? 

Thank you very much 

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3 REPLIES 3

piotrl
Level 8

And what is it? Nothing in manual. 

Maybe this is bios error? Like here https://youtu.be/H8FdNK10H2w 

Silent_Scone
Super Moderator

Hi @piotrl 

 KF564C32BBEAK2-64 is actually validated by the memory vendor for AMD platforms. Different platforms have different voltage guardbands, and as a result the XMP/EXPO profiles may require additional tuning. 

Have you tried increasing VDD/VDDQ 30 to 40mV?

 

9800X3D / 6400 CAS32 / ROG X870 Crosshair / TUF RTX 4090