3 ms·
I get your desire to be conservative here, but this is not good practice with modern CPUs. For example AMD desktop CPUs are designed with DDR4 speeds well north
by paol 7y ago
I get your desire to be conservative here, but this is not good practice with modern CPUs. For example AMD desktop CPUs are designed with DDR4 speeds well north of 3000MHz in mind[1]. Problem is that JDEC profiles simply don't go that hight for some reason, so you you have to run with XMP profiles if you want the chip to perform as the manufacturer intended.
[1] https://www.anandtech.com/show/14525/amd-zen-2-microarchitecture-analysis-ryzen-3000-and-epyc-rome/11 https://www.anandtech.com/show/14525/amd-zen-2-microarchitec...
- jrockway 7y agoI look at Intel ARK and use what they say the CPU is rated for. I am a couple generations behind, so not at the bleeding edge. (Haven't used an AMD CPU, but I would find their equivalent if I did.)
- Filligree 7y agoKeep this in mind for when you do: The first boot will be in a "failsafe" 2133MT configuration, but the fabric clock is intended to ramp all the way up to 1800MHz. You need 3600MT to match that while keeping 1:1 sync, which means XMP unfortunately.