LLC (Load Line Calibration) not working... Bios fix required ASAP

[morph.]

Any eta on when there will be a bios patch/fix for LLC?

Vdrop is just too high at the moment it seems.

https://www.youtube.com/watch?v=hCAQpvFhiUs

[Raja@ASUS]

https://www.io-tech.fi/uutinen/paivi...0-emolevyilla/

Use google translate. That will give some of the you the answer to this hoo-haa. Unfortunately, they aren't measuring from the right place, either. To get a more accurate reading, you'd use one of the MLCC caps behind the socket. You want to get as close as you can to the socket pins so that you can see how much resistive loss you get through the power plane. Review sites simply aren't equipped to do this stuff properly. The non-technical guys profess to know things they don't understand, and those that try to be technical mess it up, too.

The requested VID can be affected by the IA/AC and DC load line settings. Has been like that for a while now. I'll see if I can get a board here and check what's going on.

[morph.]

Been reported that some are getting as much as 0.9V vdroop though... is that inaccurate?

Just from apps such as CPUID / CPU-Z

[Raja@ASUS]

Been reported that some are getting as much as 0.9V vdroop though... is that inaccurate?

Just from apps such as CPUID / CPU-Z

That's why you should measure properly before coming to a conclusion. Don't rely on software. Plus the IA AC/DC settings are likely involved, so calling this Vdroop may be inaccurate, too.

[morph.]

Sorry i'm not an electrical engineer, but don't these apps pull the data from the BIOS and if so the bios seems to be reporting incorrect power data how can 'enthusiasts' trust the read outs without multi-meters and what not to overclock?

[JustinThyme]

I am an electrical engineer and Im afraid Raja has this right. I have to say Im a bit disappointed in Tom to produce such rubbish with zero supporting documentation.
Are you personally experiencing measured Vdroop issues? If so the prudent thing to do is contact support and arrange for an RMA of your boards.

I have 3 software packages that pull whats supposed to be the same data from the smbus and no two read the same. This so called bug could be a result of these vendors not updating their software yet for the Z370 chipset. There's a million things here and nothing worse than troubleshooting conjecture.

[Raja@ASUS]

Sorry i'm not an electrical engineer, but don't these apps pull the data from the BIOS and if so the bios seems to be reporting incorrect power data how can 'enthusiasts' trust the read outs without multi-meters and what not to overclock?

Power and voltage are not the same thing. They are related, but one shouldn't confuse where and when to use these terms. Software doesn't use bios to report voltages. Even if you were unsure of voltage, you can check cpu power consumption in software such as aida64. It's power that ultimately matters. Looking at voltage without checking current doesn't tell you much. P=VA. Remember that and you won't need to rely on reviewers for info.

As for the rest, like I said, I'll see if I can get a board to check, or ask one of the r&d guys to look into it. Oh, and yes, software often needs an update, too. That part would be up to the software developer to fix.

[Korth]

Oh, and yes, software often needs an update, too. That part would be up to the software developer to fix.

Slightly off-topic, but I'm curious:

Benchmarking and hardware monitoring softwares (CPU-Z, HWMONITOR, HWiNFO, etc) need to be calibrated and updated for best accuracy on each new platform. Does ASUS provide sample boards or "confidential" technical data to these software devs before product launch?

[Raja@ASUS]

Sometimes we do. However, I'm not at liberty to discuss who we sample boards to and why.

[Korth]

A fair answer. Thanks