Gigabyte Vcore Sensors: ITE IT8686E vs ITE IT8792E

[Mister Woof]

Z370 Aorus Gaming 5

 

There are "Vcore" readings on both. I've always just looked at both and figured they were 

 

IT8686E often reports brief high spikes during idle.

 

IT8792E doesn't report these, but in general is a few mv below the first.

 

Which one is more accurate?

This board doesn't appear to have anything labelled "VR OUT".

 

I have been referencing IT8686E because it is closer to the CPUz reading for the past 3 years and it's been fine. But this has been bugging me for ages.

[Guest]

Remove the SIV driver and you should get VR out reports.

 

IT8686E would be accurate to Cpu-Z, but if you see spikes, it probably reports faster than Cpu-z. So every half second it may pull a reading vs cpu-z at every second for example.

[Jurrunio]

https://www.hwinfo.com/forum/threads/questions-on-various-sensors-threads-on-gigabyte-trx40-aorus-master.6826/

 

Seems like both are super I/O chips, which means both are equally inaccurate. Just take an average between the two under load...

[Guest]

5 minutes ago, Jurrunio said:

https://www.hwinfo.com/forum/threads/questions-on-various-sensors-threads-on-gigabyte-trx40-aorus-master.6826/

 

Seems like both are super I/O chips, which means both are equally inaccurate. Just take an average between the two under load...

That thread is for a TRX40 mainboard. AMD's algorithm is quite a bit different from Intel's. 

[Jurrunio]

Just now, ShrimpBrime said:

That's thread is for a TRX40 mainboard. AMD's algorithm is quite a bit different from Intel's. 

Algorithm? If it's Ryzen, just read out of the CPU itself, no need for super I/O. I'm talking about the two ITE's work on motherboards in general.

[Mister Woof]

3 minutes ago, ShrimpBrime said:

That's thread is for a TRX40 mainboard. AMD's algorithm is quite a bit different from Intel's. 

I guess I am not concerned about it; as I said it's been like this for several years. My target is 1.38v right now with the middle setting LLC - average voltage is 1.38v per the IT8686E sensor with brief spikes to 1.43v, but the IT8792E reports average of 1.36v with maximum of 1.37v.

 

These high voltage spikes only ever occur at idle process.

[Guest]

2 minutes ago, Jurrunio said:

Algorithm? If it's Ryzen, just read out of the CPU itself, no need for super I/O. I'm talking about the two ITE's work on motherboards in general.

It's not an AMD platform. He has an Intel Z370..... Is what I'm getting at.

 

And no, some   most of (if not all) AMD's voltages and temps are based on algorithm, it's not a "direct reading", never was.....

[Guest]

4 minutes ago, Mister Woof said:

I guess I am not concerned about it; as I said it's been like this for several years. My target is 1.38v right now with the middle setting LLC - average voltage is 1.38v per the IT8686E sensor with brief spikes to 1.43v, but the IT8792E reports average of 1.36v with maximum of 1.37v.

Like Jurrunio mentioned, it's in the ballpark. 

 

You can only get an accurate reading if you probe your VRMs. 

[Guest]

8 minutes ago, Mister Woof said:

 IT8686E sensor with brief spikes to 1.43v

Addressing the curiousity....

 

You should see how software reports sensors that don't exist.

[Mister Woof]

5 minutes ago, ShrimpBrime said:

Like Jurrunio mentioned, it's in the ballpark. 

 

You can only get an accurate reading if you probe your VRMs. 

It hasn't exploded yet so I think I'm good 

 

Also - I undid the 5.1ghz OC. I had it up for a few days but noticed zero improvement in anything so lol.

 

My 5800x is apparently in limbo somewhere in the midwest under FedEx's control.

[Mister Woof]

Just now, ShrimpBrime said:

Addressing the curiousity....

 

You should see how software reports sensors that don't exist.

Saw some VRM MOS report 122c constantly before on an old board. that was fun

[Guest]

1 minute ago, Mister Woof said:

It hasn't exploded yet so I think I'm good 

 

Also - I undid the 5.1ghz OC. I had it up for a few days but noticed zero improvement in anything so lol.

 

My 5800x is apparently in limbo somewhere in the midwest under FedEx's control.

 

Oh nice! Should be a sweet improvement over the 8700K! Can't wait to see the results and how you like it!! 

 

5ghz.... 5.1ghz.. totally not a big difference. Diminishing returns start there anyways. Looking at 1.40v roughly 5.2ghz, think mine gets away with 1.410v high llc. Only bummer is HT gets disabled at 5.3ghz. Even on the cold loop. So this might help you with some per core epeen if you can live on just the 6 cores (generally how I run mine on air) helps lower power consumption and temps too, which you already know...... But yeah. 5ghz is good spot for that chip either way! 

 

Just now, Mister Woof said:

Saw some VRM MOS report 122c constantly before on an old board. that was fun

 

I've seen HWMonitor tell me I'm running 4.1v and higher on some older platforms. Like wtf?! And in some revisions of Cpu-z also. 

 

The time it takes for a sensor pull is about 1000ms (give or take).

So what you are looking at already happened a second ago. Depending on system load, that can be a longer duration. Even if you set the software pull rate faster, you're still that 1000ms behind "real time". 

 

So with that being said, if you monitor temps up to thermtrip, (cpu overheat request shut down.) it's 99% likely the board will have shut off before the temp was ever reported. 

[Mister Woof]

I am trying to refuse the delivery lol.....i regret that $450 price tag.

It was scheduled for delivery yesterday, but updated to "pending" and has been in MN since the 12th. Who knows where the hell it actually is. 

[Guest]

1 minute ago, Mister Woof said:

I am trying to refuse the delivery lol.....i regret that $450 price tag

Well.... If you want to have some fun with your hardware....

 

Keep the 5800X and build a new mainrig. Do a fresh OS for the love of the gods. lol.

 

And the 8700K.... well find a way to get it cold. Overclock it on a bench and run some benchmarks. Have some achievements  

Pretty much what happened/s to all may house rigs (generally 3 set up minus what's on the bench). They get OCed sub zero. 

 

I suppose it's more enjoyable than giving it away, or junking it. That's really the only reason I got into the hobby. Love to work with my hands and do cooling mods. TECs ICE water in a 5 gallon bucket with a small pond pump.... dehumidifiers with water loop rads zip tied to the Evap. LN2 and Dry Ice you can get at some grocery stores like Meijers. My store is about 9 miles away. So is where I pick up LN2 at Air Gas. Don't need a license, just a proper container and they'll sell out the door. I fill my Argon with them also. Get to know the guy, pay for 10L, he fills the 22L dewar  

 

I'm really shocked more people don't bench sub zero. It's really super easy.... mad clocks. mad fun. 

[Mister Woof]

1 minute ago, ShrimpBrime said:

Well.... If you want to have some fun with your hardware....

 

Keep the 5800X and build a new mainrig. Do a fresh OS for the love of the gods. lol.

 

And the 8700K.... well find a way to get it cold. Overclock it on a bench and run some benchmarks. Have some achievements  

Pretty much what happened/s to all may house rigs (generally 3 set up minus what's on the bench). They get OCed sub zero. 

 

I suppose it's more enjoyable than giving it away, or junking it. That's really the only reason I got into the hobby. Love to work with my hands and do cooling mods. TECs ICE water in a 5 gallon bucket with a small pond pump.... dehumidifiers with water loop rads zip tied to the Evap. LN2 and Dry Ice you can get at some grocery stores like Meijers. My store is about 9 miles away. So is where I pick up LN2 at Air Gas. Don't need a license, just a proper container and they'll sell out the door. I fill my Argon with them also. Get to know the guy, pay for 10L, he fills the 22L dewar  

 

I'm really shocked more people don't bench sub zero. It's really super easy.... mad clocks. mad fun. 

My PC's always go down the stack - it would either replace the 1600 or the i3 (which then go to a family member outside the household). So it's rarely ever a complete waste........but eh

[Guest]

Just now, Mister Woof said:

My PC's always go down the stack - it would either replace the 1600 or the i3 (which then go to a family member outside the household). So it's rarely ever a complete waste........but eh

None of my family members rock anything of this caliber. So they don't get any lol. 

 

I have "given" much hardware away in the forums with comps and when I see  someone in need and it's genuine, I'll send something out. Recently, one of the mods at TPU forums actually needed a card for his daughter. Asked if a GTX 770 would help, was plenty for her needs so off it went. It was a good card. I never overclocked it too hard either.