3930K @ 4GHz - x40 AutoV?

KristopherF

KristopherF

KristopherF

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Joined
14 Nov 2012
Posts
152
Location
Greenock, UK
Hey guys just a quick check.

From what I have read, the 3930K can be OC to 4GHz off the bat without touching VCore. Is this right?

Right now I have these settings.

Multiplier - x40.
VCore - Auto.

Is this all I need to do? I am getting 4GHz, but didnt know if this is the correct way.

If I was to manualy enter VCore, would I need to change anything else? And if I did set VCore manually what settings would you recomend?
 
So here is what I have so far.....

This is with the BIOS set with 40x multiplier, 1.350 VCore. I take it the difference in CPU-Z on the VCore is what everyone calls vdroop?

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This is Intel Burn Test running at "very high". Don't worry about the idle temps (value) they are a little high as I had just finished running the test. I'm about to start "maximum" and will report back, but what are your thoughts on the results so far?
 
Damn, on maximum I got an hour into the stress test and it failed on Intel Burn Test. No BSOD or fatal crash, just got a message after the second test to say that it had became unstable.

nb2pz.jpg


Whats your guys thoughts?
I must have a setting wrong, VCore is at 1.350 in BIOS thought that was well within range for 4GHz on the 3930K. There must be a setting in the BIOS perhaps?

Here are some photos of the BIOS.....

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Also, just a note for 8 Pack and others who provide any help.

This is what I am wanting to achieve:

3930K stable anywhere between 3.8 and 4.5GHz (I am not looking to pump this thing as I need a stable and reliable machine, so a little OC to give it some more juice but not straining it).

I will be using 64GB of RAM (Patriot Intel Extreme Masters 2x 32GB kit) (8x8) so all RAM slots will be populated.
I would like to keep RAM at the suggested speed of 1600MHz (9-9-9-24)

Anway just incase you need specs (there in sig):

Mobo: Gigabyte X79 UD-5
CPU: i7-3930K
Cooling: Corsair H100i Cooler
RAM: 64GB (2x32GB Packs/8x8GB) Patriot Intel Extreme Masters 1600MHz 9-9-9-24 1.5v
GPU: GeForce GTX 670 2GB DDR5
HDD1: Samsung 830 - 256GB SSD SATA3 - Intel Controller
HDD2: OCZ Agility 3 - 240GB SSD SATA3 - Intel Controller
HDD3: Samsung 830 - 128GB SSD SATA3 - Intel Controller
HDD4: Lacie 1TB 7200rpm eSATA External - Intel Controller
PSU: Antec 850W Gold PSU
Case: Antec P280 Case
 
Thanks for replying 8 Pack!

I am currently at work but as soon as I get in I will get onto this.
One note, I currently have 32GB of ram installed as the other 32gb had a fault in one of the modules so I am awaiting OCUK to replace it, shouldnt be too much longer.

So from looking at what you have suggested, tonight I will do the following:

1. BIOS flash to F13
2. Clear CMOS and make sure everything is running at stock.
3. Enable XMP and make sure it posts
4. Set DRAM and PLL to 1.65v
5. Set VTT and IMC to 1.05v
6. Run MemTest86
7. Add CPU OC to 4.0GHz with x40 Multi and 1.225v on VCore
8. Tweek VTT and IMC.

I take it when I revert everything to stock after the BIOS flash, it will all be set to AUTO?

As for Ram settings, I am using stock settings at the moment. XMP would not post for some reason so I went in and did it manually with the manufactures specs.

I have ran MemTest a number of times and can positively say that the Mobo is fine, and the Ram I have at the moment is also working fine.

I'll let you know the results this eve!
 
okay, so while running xomplete stock and just changing bios to xmp, imc/vtt and dram volt it failed.

system would post but then bsod when loading windows.
issues like page faults and bad pool header etc.

HOWEVER!

i have gone back to manually entering ram settings. 9-9-9-24 and 1.6v

and then cpu vcore to 1.3 and a multiplier of 40. - yes i bet this is not ideal voltage but for now it works (62 degree tops on full load).

Now here is where it gets interesting....
With these settings I would be fine but under stress tests i would fail intel burn on the very high setting.

So i went back and thought ill chabge this setting called ram performance (this was set to normal) i switched it to extreme while still usinh my own dram settings and so far so good.

completed very high stress test and now currently doing the maximum test. I should note this is the furthest I have managed to get even with stock optimized bios defaults loaded.

Its all so baffeling to me!

oh and sorry for the awful spelling and grammar but im using the ocuk forum app and my thumbs are too big for this phone :)



Posted from Overclockers.co.uk App for Android
 
Ah ok, so Just go back in and run a decent memtest on the ram?
What do IMC volts affect?

I have not had any BSODs etc so far.

I will run memtest as it is and post the resaults tonight. I'll also post up a list of all settings.

Thanks for your help thus far mate, really appreciate it!
 
i did test each last week and found and issue and sent them back - thats why i am just on 32gb and not 64gb.

How long should i test each stick individually for?


Posted from Overclockers.co.uk App for Android
 
Hey buddy, here is my latest findings:

Now with the OC MemTest shows up errors.
Without the OC MemTest shows up errors, and more errors than when its OC or just XMP.

I am running MemTest86 with one stick installed and waiting for 2 passes and then moving onto the next stick.

MemTest is being run with no OC and only stock defaults.
Here are the results:

Stick 1 - Errors: 6
Stick 2 - Errors: 266
Stick 3 - Errors: 52
Stick 4 - Errors: 56

ALL errors happen during MemTest's 6th and 8th tests regardless of how many passes, most of the errors happen in the 6th test..

All sticks were tested in the same DIMM Slot.
I have checked Mobo DIMM's with other RAM and it passes with flying colours so Mobo is fine.

As you can see there is no pattern in the amount of errors per stick.
The addresses which the errors occur are also all different depending on which stick is installed.
 
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