Z370 / Z390 VRM Discussion Thread - Page 33 - Overclock.net - An Overclocking Community

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Z370 / Z390 VRM Discussion Thread

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post #321 of 4104 (permalink) Old 10-22-2017, 01:22 AM
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Same here. 8700K / Gaming 7 VRM working well. Even with 5.2 GHz /1.42V stress testing with non AVX prime95 (1h) I was below 90°C most of the time. The VRM Fan spins with ~6000RPM but is surprisingly low noise considering the RPM. At that load my Corsair ML120Pros are way louder than than the VRM fan. That said, my cooling solution and case are bad for the VRM anyways. If the VRM hearsink gets some airflow from casefans the mini-fan should never be needed .
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post #322 of 4104 (permalink) Old 10-22-2017, 01:36 AM
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Which sensor is more accurate though? The ITE IT8686E or ITE IT8792E?

I think the thermal pads are still crap, cranking it down is just mitigating the badness. The VRM heatsinks' temperature is far below the VRM_MOS sensor and my thermal probe on the board.

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post #323 of 4104 (permalink) Old 10-22-2017, 01:59 AM
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ITE IT8686E was behaving quite strange in my testing.
If it works, it reads higher peaks than the IT8792E, especially vcore. Sometimes it stops working and the IT8792E gets double the sensor values (vcore = 2.6V etc.). Other times it shuts off completly.
I'm wondering if that's the hwinfo betas fault or the chip itself overheating or failing at high voltages.
IT8686E sits near the debug leds and the pch. Do you know where the IT8792E is?

Edit:
IT8792E is left to the 3rd m.2 connector.

@Exilon
The two thermal probes the gaming 7 came with are pretty bad measuring surface temps. Did you connect these or different ones to your aquaero?
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post #324 of 4104 (permalink) Old 10-22-2017, 02:36 AM
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Quote:
Originally Posted by m0rdax View Post

ITE IT8686E was behaving quite strange in my testing.
@Exilon
The two thermal probes the gaming 7 came with are pretty bad measuring surface temps. Did you connect these or different ones to your aquaero?

I used the ones that came with my Aquaero.

I'm also seeing the 8686E go sideways. Quite disconcerting that this is an issue...

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post #325 of 4104 (permalink) Old 10-22-2017, 02:54 AM
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Quote:
Originally Posted by m0rdax View Post

Same here. 8700K / Gaming 7 VRM working well. Even with 5.2 GHz /1.42V stress testing with non AVX prime95 (1h) I was below 90°C most of the time. The VRM Fan spins with ~6000RPM but is surprisingly low noise considering the RPM. At that load my Corsair ML120Pros are way louder than than the VRM fan. That said, my cooling solution and case are bad for the VRM anyways. If the VRM hearsink gets some airflow from casefans the mini-fan should never be needed .

Yes the mini fan its really silent but it's new. What about noise after running few months.
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post #326 of 4104 (permalink) Old 10-22-2017, 04:15 AM
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I'm so confused what to buy, I've been reading up for days and none the wiser.

I can't decide between the Aorus Gaming 7 or Maximus Hero X
I just want the best board, the price does not matter.

Can anyone tell me which is the best board out of these and which has the best VRMs?
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post #327 of 4104 (permalink) Old 10-22-2017, 04:23 AM
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On paper Gaming 7 looks nice but I can't tell how much voltage is being fed into the CPU and the VRM cooling seems suspect.

The current issue I'm working on:

VID is 1.33v, my offset is +0.075v.

One sensor says max of 1.488v (!) other sensor says max of 1.397v.


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post #328 of 4104 (permalink) Old 10-22-2017, 04:25 AM
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Quote:
Originally Posted by Exilon View Post

On paper Gaming 7 looks nice but I can't tell how much voltage is being fed into the CPU and the VRM cooling seems suspect.

The current issue I'm working on:

VID is 1.33v, my offset is +0.075v.

One sensor says max of 1.488v (!) other sensor says max of 1.397v.


That doesn't look very reassuring, it seems all these Z370 boards have issues with something.
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post #329 of 4104 (permalink) Old 10-22-2017, 04:33 AM
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Quote:
Originally Posted by RustySpoons View Post

I'm so confused what to buy, I've been reading up for days and none the wiser.

I can't decide between the Aorus Gaming 7 or Maximus Hero X
I just want the best board, the price does not matter.

Can anyone tell me which is the best board out of these and which has the best VRMs?

I'm no expert on this but I believe the Aorus has the best between those two. Something about Aorus having 50 dollars in parts and the hero having 20.

I care about price because I'm hoping the 390s will be much better in terms of hardware and features.

I believe the best might be msi godlike. But that's in a whole different world in terms of price.

On the whole all these boards feel rushed. Hopefully they'll be able to take their time with the 390s.

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post #330 of 4104 (permalink) Old 10-22-2017, 04:34 AM
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Quote:
Originally Posted by RustySpoons View Post

That doesn't look very reassuring, it seems all these Z370 boards have issues with something.

I think the 8686E reading on the Gaming 7 is just completely wrong. It claims an idle voltage of 0.5v, but that's way too low as well.

I personally prefer the ASUS UEFI. Gigabyte's UEFI usability hasn't really improved since I last used them on Z77.

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K6 Motherboard , Msi , voltage regulator , z370 vrm , z390 , z390 vrm

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