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Sandy Bridge E Overclocking Guide Walk through, Explanations, and Support for all X79 Overclockers - Page 15

post #141 of 397
Quote:
Originally Posted by MK500 View Post


Do you have a link to where you got that Intel chart by the way? I'd love to check to see if they updated it. Is it any different for the 3930K C2 stepping (like mine)?

Curious to know this myself as a new owner of a 3930k C2 stepping as well.
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post #142 of 397
there was a mention that the x79 board and particularly the VRM should have some cooling if
over-clock exceeds 4.5? and/or 1.44v. with the advent of liquid cooling (H100 or custom) removes
the air-flow from the VRM area. has anyone decided if liquid cooling is needed, ventilate the VRM
fets or just live with the lower voltages?
curious..

airdeano
post #143 of 397
Hi, I am running 4.685 Ghz with 1.39v, VCCSA = 1.17 V and VTT = 1.25v

Is that fine?

I also want to know if there is a special voltage to raise if I use multi GPUs setup (3 x 6970 crossfire) more power to the PCIE Lanes, I have the power 6 PIN plugged to the motherboard but I want to know if there is a voltage like PCH voltage (x58) for more than 3 high end GPUs?
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post #144 of 397
Quote:
Originally Posted by MK500 View Post


Do you have a link to where you got that Intel chart by the way? I'd love to check to see if they updated it. Is it any different for the 3930K C2 stepping (like mine)?

http://www.intel.com/content/www/us/en/processors/core/core-i7-lga-2011-datasheet-vol-1.html?wapkw=lga+2011

Look on page 60. The absolute max voltages are listed there. I don't know what revision this document is, but I'm assuming these voltages apply to both C1 and C2 steppings.
post #145 of 397
They should be the same since it is the same processor except it now works as indented there is no differences between C1 and C2 stepping except VT-d being enabled thus they should be no OC and perform difference unless you use VT-d application.
    
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post #146 of 397
Quote:
Originally Posted by Warrior1986 View Post

Curious to know this myself as a new owner of a 3930k C2 stepping as well.

Same. Seems I've missed the party by about 6 months, and now everyone is over at the Ivy-Bridge rave.

Anyways, better late than never. I haven't been into new cpus for a while with my last one being an E8400. My new 3930K is quite the upgrade.

System
CPU:3730k - Stepping 7, Rev C2.
Motherboard: Asus Sabertooth x79
RAM: G.Skill 16GB 2133MHz Quad kit
Cooling: Corsair H100
Case: Coolermaster Storm Trooper
PSU: Coolermaster 1050W

I've hit 4.8GHz, stable with 1.36V.

Temps seem ok, but not sure. Does mid 50s on the "CPU Temp" seem ok?

My "VCORE" temp (apparently this is the VRM temp on ASUS boards) is sitting high 70's. I'm not sure if this is a problem or not.

I've had to increase by 30mV on the VCORE to from 4.7GHz to get 4.8GHz stable.

I imagine that another 100MHz bump would require a similar bump, so 5GHz may be achieved with 1.42V. I'm happy with 4.8GHz right now though, so I'll leave that for another day when this CPU starts to feel slow.

And I'm a pretty far from understanding all the weird and bizarre options in the BIOS, but there seems to other ways to get stability.

Also, reading this thread, it seems the C2 revisions are a fair bit of an improvement. Most people need 1.4V+ to get similar results on the older CPU's.
post #147 of 397
Quote:
Originally Posted by snoochems View Post

Same. Seems I've missed the party by about 6 months, and now everyone is over at the Ivy-Bridge rave.
Anyways, better late than never. I haven't been into new cpus for a while with my last one being an E8400. My new 3930K is quite the upgrade.
System
CPU:3730k - Stepping 7, Rev C2.
Motherboard: Asus Sabertooth x79
RAM: G.Skill 16GB 2133MHz Quad kit
Cooling: Corsair H100
Case: Coolermaster Storm Trooper
PSU: Coolermaster 1050W
I've hit 4.8GHz, stable with 1.36V.
Temps seem ok, but not sure. Does mid 50s on the "CPU Temp" seem ok?
My "VCORE" temp (apparently this is the VRM temp on ASUS boards) is sitting high 70's. I'm not sure if this is a problem or not.
I've had to increase by 30mV on the VCORE to from 4.7GHz to get 4.8GHz stable.
I imagine that another 100MHz bump would require a similar bump, so 5GHz may be achieved with 1.42V. I'm happy with 4.8GHz right now though, so I'll leave that for another day when this CPU starts to feel slow.
And I'm a pretty far from understanding all the weird and bizarre options in the BIOS, but there seems to other ways to get stability.
Also, reading this thread, it seems the C2 revisions are a fair bit of an improvement. Most people need 1.4V+ to get similar results on the older CPU's.

Wow 4.8GHz with 1.36V is astonishing to say the least!
post #148 of 397
Quote:
Originally Posted by Systemlord View Post

Wow 4.8GHz with 1.36V is astonishing to say the least!

Astonishing huh? Thanks for the feedback.

The only thing I'm concerned with is the "Vcore" temp on the ASUS Sabertooth (this is supposed to be the VRM temp). Hits 80+ ºc when stressing. I have a fan pointed at it, which did drop the temp a bit. Else I would try and push it harder.
post #149 of 397
Quote:
Originally Posted by snoochems View Post

Astonishing huh? Thanks for the feedback.
The only thing I'm concerned with is the "Vcore" temp on the ASUS Sabertooth (this is supposed to be the VRM temp). Hits 80+ ºc when stressing. I have a fan pointed at it, which did drop the temp a bit. Else I would try and push it harder.

In all truth VRM are general design to deal with really high temps sure it presumable does affect stability that why there is still is some point for MB WC (IMO as minor difference as it probably) but i really personal would not be concerned at those temps though i might think about possible max temps on the hottest days when summer comes......

Nice OC btw but I'm still secpical that there should be any difference between the to CPU's ( C1 & C2 ) in terms of OC potential I personnel think its far more likly that you just got lucky in the silicon lottery thumb.gif That said i'm far from an expert..... Just like OC smile.gif
    
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post #150 of 397
Quote:
Originally Posted by snoochems View Post

Astonishing huh? Thanks for the feedback.
The only thing I'm concerned with is the "Vcore" temp on the ASUS Sabertooth (this is supposed to be the VRM temp). Hits 80+ ºc when stressing. I have a fan pointed at it, which did drop the temp a bit. Else I would try and push it harder.

You have got to look at it like this, this is a 6 core processor we are talking about here. You would be lucky to get an Ive Bridge 3770K that overclocked to 4.8GHz! VRMs are that one MB component that will survive high heat, but that won't stop me from water cooling them.
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