-
Competitor rules
Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
6700k high vcore?
- Thread starter spluff
- Start date
Too high.
Could be (1) a false reading, or (2) BIOS may need updating, or (3) the program you are using when it boosts adds more voltage.
Try different monitoring programs first. CPU-Z for instance - go to the Bench tab and run the benchmark or the stress test, then return to the main tab to watch the Vcore before stopping the test.
Could be (1) a false reading, or (2) BIOS may need updating, or (3) the program you are using when it boosts adds more voltage.
Try different monitoring programs first. CPU-Z for instance - go to the Bench tab and run the benchmark or the stress test, then return to the main tab to watch the Vcore before stopping the test.
Do you have an Asus mobo? If you have then this is normal, Asus mobos overvolt the CPU to insure stability because unlike other mobos the 6700K runs at 4.2 GHz across all threads even in heavy threaded apps. While the normal stock 6700K will boost to 4.2 GHz only in single-threaded apps and 4.0 GHz in multi-threaded apps. You can undervolt it if you want but 1.4 V is still within Intel's specifications.
Yes its an asus hero viii
So its better to have the asus because it can do all cores?
one thing that annoys me though is that even doing everyday tasks the cpu boosts up / heats up instantly and the cpu fan spins up fast and then slows down straight away....
So its better to have the asus because it can do all cores?
one thing that annoys me though is that even doing everyday tasks the cpu boosts up / heats up instantly and the cpu fan spins up fast and then slows down straight away....
Other mobos (Giga, MSI, don't know about ASRock but would be very surprised if they couldn't) can do all cores too.
If what AaA91 has related is really Asus' spiel regarding this, it's just silly. At 1.4 Vcore, you're adding like 15-20 degrees in temperature, at stock. And exceeding (by far) the stock TDP of the chip. So if this were true, the only thing Asus mobos would be doing is adding a lot more unnecessary heat and making Intel look like liars for providing "false data" about the stock TDP of the 6700K.
Even though it is still within safe limits, 1.4 Vcore is already pretty borderline, and without any overclocking having taken place?
Nah. Something doesn't square up. Searching on the web for others with this issue, I came across posts by someone else with the same issue (same motherboard, same stock voltage on load). He couldn't find a "fix" other than to follow overclocking instructions for a 4.5GHz OC (Der8auer's actually), including setting Vcore manually to 1.26v.
https://www.reddit.com/r/pcmasterrace/comments/3n4xio/i76700k_running_high_vcore_in_stock_speeds/
https://www.youtube.com/watch?v=7pL_n5l4gWU
I set an all cores 4.7GHz OC on a Gigabyte Gaming K3 (not one of the most expensive by any means) with 1.36v. Yes, chips can vary, and some will achieve a bit more on that voltage, and some will reach only 4.5/4.6. But to exceed that voltage for 4.2Ghz all cores is just crazy. There has to be an explanation that makes sense, or an issue somewhere.
Did you check the core speed and multiplier in CPU-Z when on load, to make sure it wasn't somehow running faster than 42 (multi)?
As for the CPU cooler fan, what you need to do is set a profile with a more gradual gradient, so you don't hear the change in pitch so much or so suddenly. One way to achieve this is to play with raising the minimum RPM (so the gradient is not so steep). Other than that, lowering the Vcore will certainly help the fan not to spin as fast on load.
Last edited:
Cheers
I haven't used CPU-Z - I used HW monitor - can try that later today...
Mine is currently not overclocked - I don't feel like I am running anything that is taxing the cpu that much to do it yet....
I guess lowering it to 1.26V manually you will lose the advantages of the cpu underclocking when idle as it will constantly be using the same voltage at full speed or low speed?
I haven't used CPU-Z - I used HW monitor - can try that later today...
Mine is currently not overclocked - I don't feel like I am running anything that is taxing the cpu that much to do it yet....
I guess lowering it to 1.26V manually you will lose the advantages of the cpu underclocking when idle as it will constantly be using the same voltage at full speed or low speed?
Fair enough. Well, all the more reason to lower that excessive voltage.
Not necessarily. Find the "Adaptive" setting (it's usually called that) and choose it instead of "Fixed" (or whatever the name is in your board's BIOS), leave C-States enabled, and Intel Speed Step enabled, and voltage and clocks will fluctuate, conserving energy when more is not needed. This should happen regardless of you typing in a different Vcore. Some boards may be slightly different and also require entering an "Offset" voltage. But I think less boards actually require that these days. Even my MSI Z87 from 2013 didn't require it for Adaptive to work, and clocks and voltages to fluctuate.
Is this it? Which ones do I use? Thanks
CPU Core/Cache Voltage [Default: Auto]
Options: Auto / Manual Mode/ Offset Mode/ Adaptive Mode
For Manual Mode:-
CPU Core Voltage Override Auto / 0.600 -> 1.700
For Offset Mode
Offset Mode Sign (+ / -) / Offset Mode Value Auto / 0.005 - 0.635
For Adaptive Mode
Offset Mode Sign (+ / -)
Additional Turbo Mode CPU Core Voltage (0.25 - 1.925)
Offset Voltage [Auto] 0.001 - 0.999
CPU Core/Cache Voltage [Default: Auto]
Options: Auto / Manual Mode/ Offset Mode/ Adaptive Mode
For Manual Mode:-
CPU Core Voltage Override Auto / 0.600 -> 1.700
For Offset Mode
Offset Mode Sign (+ / -) / Offset Mode Value Auto / 0.005 - 0.635
For Adaptive Mode
Offset Mode Sign (+ / -)
Additional Turbo Mode CPU Core Voltage (0.25 - 1.925)
Offset Voltage [Auto] 0.001 - 0.999
My friend owns the same mobo, that's why I asked you if you own an Asus mobo.
With his 6700K the mobo defaults Load-Line Calibration to level 8 or 7 making the CPU go as high as 1.456-1.472V during heavy load. We lowered it to level 1 and tested for stability (OCCT 4.4.1 Large/ Small Data Sets). And it was completely stable, while still maintaining 4.2 GHz across all cores.
With his 6700K the mobo defaults Load-Line Calibration to level 8 or 7 making the CPU go as high as 1.456-1.472V during heavy load. We lowered it to level 1 and tested for stability (OCCT 4.4.1 Large/ Small Data Sets). And it was completely stable, while still maintaining 4.2 GHz across all cores.
Im getting confused now 
So I need to change Load Line Calibration to lower? (ill check what it is)
Checking manual - default is AUTO? I presume mine is (is there a way to check what value AUTO is setting it to?)
What does that do and how does that effect the high voltage?
Cheers
So I need to change Load Line Calibration to lower? (ill check what it is)
Checking manual - default is AUTO? I presume mine is (is there a way to check what value AUTO is setting it to?)
What does that do and how does that effect the high voltage?
Cheers
Last edited:
You do know you can change/delay the spin down time of the fans in the bios? as well as manually setting what temps to spin up to minimum and 100% fan speeds.
Im getting confused now
So I need to change Load Line Calibration to lower? (ill check what it is)
Checking manual - default is AUTO? I presume mine is (is there a way to check what value AUTO is setting it to?)
What does that do and how does that effect the high voltage?
Cheers
Yeah default is Auto, but we concluded that the mobo sets automatically to the highest LLC level because when we set the LLC to level 7/ 8 it showed the same behavior as the mobo setting on Auto.
I would just lower LLC level a few notches then run stress test to validate stability and call it a day.
As for your question what LLC does... it does prevent or lowers voltage drop during load to maintain stability but at the same time it will increase temps/ noise significantly.
Last edited:
According to Asus, you select Adaptive Mode, and then enter the max Vcore you want in "Additional Turbo Mode CPU Core Voltage". The way they word it is confusing and can give the impression one is adding the max Vcore they desire to the existing Vcore. But apparently it does mean: "ok you want Adaptive and to give a max Vcore instead of offset, well this is where you enter it".
https://rog.asus.com/forum/showthread.php?83820-Maximus-Viii-Hero-6600k-Adaptive
So try setting an easy 1.26v (which is like a baseline for 4.5GHz so should be plenty). Test/keep doing your everyday stuff, then maybe try lowering that figure, but in smaller 0.01 decrements each time. Or don't bother and keep it on 1.26 which should be very ok for temps.
Last edited:
That explanation (including the Load-Line Calibration default increase oddity) does make more sense. As that amount of LLC could be adding something like 0.1v to the total, on load.
Up to you (OP) which you want to try.
Nice result with the voltage. You may find that some apps/stress tests actually notch it up to 1.26, even a bit more. Reading other Hero VIII owners' posts, some had issues with the voltage they set not sticking. Glad you didn't. Seems they may have fixed that (if it actually was a board/BIOS issue).
Big thanks to everyone for the information in this thread. It prompted me to check my own system (Asus Z170 Pro Gaming + 6700k) and sure enough I had the same issue with vcore jumping to 1.4v under moderate load (no overclocking). I had wondered why my temperatures, while good, were slightly higher than I expected.
I changed bios settings as suggested here (LLC to level 1 and mode to adaptive etc) and vcore now only hits 1.26v or less under normal load. Temperatures are noticeably lower and the CPU is still running at 4.2Ghz across all cores (when needed, otherwise it steps down).
I changed bios settings as suggested here (LLC to level 1 and mode to adaptive etc) and vcore now only hits 1.26v or less under normal load. Temperatures are noticeably lower and the CPU is still running at 4.2Ghz across all cores (when needed, otherwise it steps down).