The Loadline mechanism should be retired...long live CEP!

FlyingScot

FlyingScot

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Lucky for you guys, I just listened to BuildZoid's latest video (almost two hours worth) so you don't have to. While you're obviously free to watch BuildZoid's latest video, and develop your own takeaways, I thought I'd summarize some of my takeaways for your consideration. Incidentally, if you have an MSI motherboard with a Raptor Lake CPU then this video is worth watching first.

Redirecting readers to this thread:
https://forum-en.msi.com/index.php?...-power-temperature-tuning.404785/post-2292101
 
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If you are new to the MSI Forum, and looking for advice on how to configure your BIOS to improve the performance of your Raptor Lake CPU (or even Alder Lake CPU), then may I suggest the following places to begin your research:

CiTay's beginner's guides (1 & 2) are perfect for those who are new to the concept of tuning the Loadline (and power limits) to reduce temperatures and performance issues:
[1] Guide: How to set good power limits in the BIOS and reduce the CPU power draw
[2] Explained: How the new BIOS versions are causing higher temperatures

For those who might be curious about our resident guru, CiTay, here he is sitting in his "lair" looking for people who might need help lowering their AC_LL - and maybe even their LDL ("the bad cholesterol"): Breaking News: CiTay Headquarters discovered online! :-)

My quick guide on how to find the hidden AC_LL and DC_LL values...and a basic introduction to the Loadline BIOS settings:
How to find your "hidden" AC / DC Loadline values

Vassil_V's exquisitely detailed case study on the different ways to configure the Loadline with CEP enabled:
Different undervolting methods with IA CEP enabled, and how they compare to Lite Load
Follow-up comment: See Here

Charonme's in depth testing of how CEP enabled vs. disabled affects system behaviour in subtle ways (e.g. voltages, temperatures, power, core frequencies):
enabling CEP results in better performance at particular settings
Related: 14700K CB R23 scores curve vs. power limits between 15W and 260W
Related: Is it safe to disable IA CEP and IA CEP 14 GEN and use lite load with 0x129

The backstory: The media attention that started this whole Raptor Lake stability and degradation saga (and likely why you came here looking for answers):
Owners of 13th/14th Gen Raptor Lake CPUs - Media Reports of serious stability issues
 
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FlyingScot said:
It might also have some benefits
Click to expand...
well the better performance I've seen with CEP boils down to lower voltages when CEP was on, but we can lower voltages with a VID offset, so I wouldn't even call that a benefit of CEP (unless it could be proven that lowering the voltage with CEP doesn't increase instability (which I wasn't able to confirm))
 
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