Maximus VII Hero / 4790K Temps and Voltages Help

[vMax65]

NBSeen.... you have fixed it.... thank you all you guys. Being a super noob I have a ton to learn and have a long way to go before i know what i am doing...

Anyway, resetting the bios settings to default and letting the bios (auto) handle Vcore seems to have made a huge impact. Not exactly sure what is really going on but will start to learn more and take things slowly. After defaulting everything the core i7-4790K is running in idle at 25 degrees before it was in the low 30's and in Prime95 it fully passed everything for an hour and the hottest it got was 61 degrees. Before in Prime95 it was hitting 80 degrees plus. My changing the vcore to manual and dropping it first to 1.136 and then 1.168 was obviously not a good idea as the temps went through the roof. Letting the board handle vcore in auto seems to have made a huge difference.

Thanks again NBSeen for your suggestion...

[Nate152]

They are some nice and chilly temps!

[vMax65]

They are some nice and chilly temps!

Thanks now i can start try and overclock... wish me luck, will use the advice you gave on the overclocking thread for the cpu..

[Nate152]

You're welcome

if you want, start a new thread in the overclocking section and post your results.

Good Luck!

[vMax65]

You're welcome

if you want, start a new thread in the overclocking section and post your results.

Good Luck!

Will do Nate152

[NBSeen]

No Problem =D

The low voltage was probably stressing the CPU causing it to overheat.
"Too much is a bad thing and too little is a bad thing also"

[InFAMAS-ONE]

well... the 4790K has a base multiplier of 40 (4.0GHz) with a boost of 44 (4.4GHz), so it's running stock, and your voltages look about right. Auto voltage usually sees the CPU being fed more voltage than it actually needs to remain stable. For example, my 4930K was drawing 1.248v when it boosted up to its turbo of 3.9GHz, but I was able to set a manual voltage of 1.25v and overclock it to 4.2GHz - same voltage, 300MHz boost!

Regards always running at 4.4GHz, and not downclocking to 4.0GHz at idle, do you have "High Performance" option enabled in Windows Power Options? Also check that SpeedStep is enabled in BIOS.

If you do, it'll set the minimum processor state to 100%, and threfore, will not downclock to 4.0GHz. Just have a look and see if that's what it is. If not, I have no idea, but it's fine to leave it as long as you're not OCD and can't deal with it. If you are, and can't deal with it, but still can't find out what's causing it, reflash the BIOS to a previous version (which will wipe all settings/profiles in there), and see if it still does it. If it doesn't, try flashing it back to the version you are using now, and see if it does it again. If it does, it's obviously something with the BIOS. It is fine for you to use an earlier version if all works ok.

[vMax65]

well... the 4790K has a base multiplier of 40 (4.0GHz) with a boost of 44 (4.4GHz), so it's running stock, and your voltages look about right. Auto voltage usually sees the CPU being fed more voltage than it actually needs to remain stable. For example, my 4930K was drawing 1.248v when it boosted up to its turbo of 3.9GHz, but I was able to set a manual voltage of 1.25v and overclock it to 4.2GHz - same voltage, 300MHz boost!

Regards always running at 4.4GHz, and not downclocking to 4.0GHz at idle, do you have "High Performance" option enabled in Windows Power Options? Also check that SpeedStep is enabled in BIOS.

If you do, it'll set the minimum processor state to 100%, and threfore, will not downclock to 4.0GHz. Just have a look and see if that's what it is. If not, I have no idea, but it's fine to leave it as long as you're not OCD and can't deal with it. If you are, and can't deal with it, but still can't find out what's causing it, reflash the BIOS to a previous version (which will wipe all settings/profiles in there), and see if it still does it. If it doesn't, try flashing it back to the version you are using now, and see if it does it again. If it does, it's obviously something with the BIOS. It is fine for you to use an earlier version if all works ok.

Thanks InFAMAS-ONE you are right it is in performance mode so auto 4.4 all the time... I'm happy with that as the the processor is running cool and OCD only effects me when something is not right and i don't understand it and of course my wife telling me she's going shopping again, again and again.

[Jeff Kicks]

ouch 1.270v for 4.4 thats some bad luck

[vMax65]

Please note still not sure exactly but others may be able to comment better.

Ok so after looking at things in a bit more detail for me to get the temps of the i7-4790k to run at mid 20's idle and mid 60's in prime95 at 4.4ghz, 4.5 or (4.7GHZ temps reach 80 degrees) without touching voltage fully stable, (screen cap below) I have to run the following settings in bios on Maximus Hero vii (should work on other asus boards).

Everything in auto except the following:

AI - Manual
BLK - 100.0 sure you could push this ever so slightly
Multi-core Enhancement - Disabled
CPU Core Ratio - Sync All Cores
44 i have set to 44 but have tested at 45 no problems (4.5ghz)
EPU Saving mode disabled
CPU level up - 4.00g
Extreme Tweaking disabled
Memory at stated speed... i.e mine is at 1600 (i have 32gb installed) set yours to whatever it is.

The above should make your cpu run full at 4.4ghz with no heat penalty and 4.5 as well... again being a noob i have no idea why. If i touch xmp it seems to set the temps high or could be mce or even epu mode not sure at all but the above will definatly keep things running cool and you can overclock at cool temps but will have to play with vcore to go above 4.6...

Again please be aware i am new at this but the above works for me and keeps temps very low mid 20's idle and no more than 63 degrees in prime95.

Screenprint 4.6ghz