ASUS X99 Motherboard Series - Official Support Thread

[Praz]

Just confirming that in order to run DDR4 2800 you have to use base clock adjustment?

Something is disagreeing with base clock ~128Mhz. Can't figure it out.

Hello

Load the 2800 XMP profile. The board will select the 125 strap and properly set the needed BCLK for 2800MHz memory speed.

[Chr0n1c]

Hello

Load the 2800 XMP profile. The board will select the 125 strap and properly set the needed BCLK for 2800MHz memory speed.

Hey Praz, thanks for the reply. I should have elaborated on my question.

Can I run at 45 x 100 while still keeping the Ram @ DDR2800? I've tried setting it this way but it goes into a boot loop.

Seems the only way that works is XMP, but I encounter bios error codes for PCI/AMI/NVRAM on boot.... which is due to a device not handling the higher base clock correct?
It was testing for a little while then crashed and I got those errors. 61,67, 6b? or bd? , 9f, 96 are the bios codes I was getting.

[Praz]

Hey Praz, thanks for the reply. I should have elaborated on my question.

Can I run at 45 x 100 while still keeping the Ram @ DDR2800? I've tried setting it this way but it goes into a boot loop.

Seems the only way that works is XMP, but I encounter bios error codes for PCI/AMI/NVRAM on boot.... which is due to a device not handling the higher base clock correct?
It was testing for a little while then crashed and I got those errors. 61,67, 6b? or bd? , 9f, 96 are the bios codes I was getting.

Hello

Those are memory related errors. 2800MHz memory speed using the 125 strap will result in DMI, PCIe and so on at only slightly more than 100MHz. You may need to adjust VCCSA to get past those errors. 2800MHz on the 100 strap can be done but depending on the CPU may require quite a bit of tuning and will most likely result in higher voltages than the same memory speed with the 125 strap.

[Chr0n1c]

Hello

Those are memory related errors. 2800MHz memory speed using the 125 strap will result in DMI, PCIe and so on at only slightly more than 100MHz. You may need to adjust VCCSA to get past those errors. 2800MHz on the 100 strap can be done but depending on the CPU may require quite a bit of tuning and will most likely result in higher voltages than the same memory speed with the 125 strap.

Thank you very much for the help and information!!!

[Praz]

Thank you very much for the help and information!!!

Hello

You're Welcome.