Post your 2xxxk 4GHz voltages

[Joseph F]

The title pretty much explains the thread.
Post the required voltage for you to reach 4GHz with your 2500k/2550k/2600k/2700k.

My chip: 2500k, 1.2v on an MSI P67A-G43. (1.175v, 1.185v turned out to be unstable)

 

[zCypher]

I don't have a 2500k, but for the sake of comparison my Phenom II X6 1100T requires at least 1.44v to reach 4.0GHz. I've only been able to get it stable at 3.9GHz so far, but we shall see.

Seems the 2500k performs pretty damn well. 😀

 

[janas19]

You lucky bastard. That's a good one.

 

[Idontcare]

The title pretty much explains the thread.
Post the required voltage for you to reach 4GHz with your 2500k/2550k/2600k/2700k.

My chip: 2500k, 1.175v on an MSI P67A-G43.

Voltage for what? Post? Boot into windows? SPi 1M? Prime95? Linx?

 

[Joseph F]

Voltage for what? Post? Boot into windows? SPi 1M? Prime95? Linx?

I've run Prime95 for a short while and run Folding@home SMP+GPU for days on end.
The stock cooler won't keep it under ~82C when I'm running Prime95, so I don't want to run it for too long.

 

[RavenSEAL]

p95 24hr should be standard.

 

[Joseph F]

It turned out that 1.175v was not Prime-stable.
So now I'm trying for 1.185v.

 

[Idontcare]

I've run Prime95 for a short while and run Folding@home SMP+GPU for days on end.
The stock cooler won't keep it under ~82C when I'm running Prime95, so I don't want to run it for too long.

That's why I am asking though, the minimum voltage to hit 4GHz depends entirely on what you are doing with it at 4GHz.

If you don't define what people need to be doing at 4GHz then the reported voltages are going to be all over the map for that reason alone.

My 2600K needs 1.162V to be 4GHz stable well enough to pass 5 cycles of IBT with all available ram (16GB) tested.

 

[Rvenger]

4.0ghz @ 1.09
4.4ghz @ 1.18

My bios reports 0.99v at start up at 4.4ghz.

 

[cantholdanymore]

:\
I can't get pass 3.9Ghz at 1.2v (LinX BSOD)

 

[Joseph F]

1.185 didn't work, either. I guess I'll be in the 1.2v club like everyone else.
^ LOL at me whining about hitting 4GHz at 1.2v.

I remember the days when CPUs used 1.75v stock.

 

[RavenSEAL]

You guys are whining about 1.2v? 😛

It takes my 1090T 1.45v to hit 4GHz and momma does it get hot D:

Oh the other hand, I think my friend's 2500K does 4.3 stable at 1.25v. Not sure if I should take him seriously...never seen the figures myself.

 

[LOL_Wut_Axel]

4GHz is too low, IMO. You can get that with a normal 2600 using the Turbo multiplier and a tiny bit of BCLK OCing. For 4.4GHz I thought 1.28V was enough, but then I had some blue screens when running smp8 on folding@home and when gaming + folding smp4. Turns out I need 1.32V to not have any problems, and with 1.26-1.27V I haven't had any problems at 4.3GHz. So, is 0.06V really worth it for a measly 100MHz more and 20W more of power consumption? Nah.

 

[janas19]

4GHz is too low, IMO. You can get that with a normal 2600 using the Turbo multiplier and a tiny bit of BCLK OCing. For 4.4GHz I thought 1.28V was enough, but then I had some blue screens when running smp8 on folding@home and when gaming + folding smp4. Turns out I need 1.32V to not have any problems, and with 1.26-1.27V I haven't had any problems at 4.3GHz. So, is 0.06V really worth it for a measly 100MHz more and 20W more of power consumption? Nah.

20W more for 0.06v? How do you figure that? 😛

 

[MrTeal]

IDC, I would love to see the power draw on a secondary axis in that graph if you have the data already.

 

[LOL_Wut_Axel]

20W more for 0.06v? How do you figure that? 😛

http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU

Power consumption is lineal for the most part in Sandy Bridge. It's only when you go to about 1.35V and higher that it starts to rise very exponentially.

 

[grkM3]

Im pushing the hell out of my 2600k and its taking a beating,vcore set to 1.570 and 120% in the digi and every other setting set to extreme load line is extreme or 100%

ram is at 2230ish with 1.657

I will see if the poor chip will clock with low vcore since it hasnt seen under 1.45volts in over 2 months

 

[LOL_Wut_Axel]

Im pushing the hell out of my 2600k and its taking a beating,vcore set to 1.570 and 120% in the digi and every other setting set to extreme load line is extreme or 100%

ram is at 2230ish with 1.657

I will see if the poor chip will clock with low vcore since it hasnt seen under 1.45volts in over 2 months

Good luck with degradation. You'll need to raise voltage again in 6 months-1 year to keep your overclock stable. Or you'll have to lower your overclock. I know people that have put so much voltage through their chips that they end up having it not perform stably even at stock clocks.

Really don't see the point in spending $320 for a high-end chip if you're gonna beat so bad on it. Unless you have a lot of disposable income, that is.

 

[grkM3]

Good luck with degradation. You'll need to raise voltage again in 6 months-1 year to keep your overclock stable. Or you'll have to lower your overclock. I know people that have put so much voltage through their chips that they end up having it not perform stably even at stock clocks.

Really don't see the point in spending $320 for a high-end chip if you're gonna beat so bad on it. Unless you have a lot of disposable income, that is.

This is my beater and I bought this cpu to overclock the hell out of it.Its getting replaced with a retail ivy when they hits the streets.Degration speeds up if you run linx 100% load all the time,this cpu never really went over 70c with normal day use.

Just for fun Im trying to see how much volts it needs to run lower speeds,im at 4.2 now with 1.250 v and about to run intel burn test.

edit

just ran 8 threads of latest itb with avx on and it passed 5 loops at 1.250 at 4.2ghz.I think I can get 4.3ghz under 1.3 volts so this cpu so far is not really bad on the low end

 

[Idontcare]

IDC, I would love to see the power draw on a secondary axis in that graph if you have the data already.

There's a thead dedicated to that topic here.

Here's one graph:

And here is the overlay:

 

[Kenmitch]

Kinda strange torture testing my 2700k at a little bitty baby overclock but I'll play along just to see what it'll do.

I'm more worried about the randome bsods using such a huge negative offset more than crashing the software being used for testing.

4ghz at 1.176v's currently running IBT(8-threads)(10 runs) on the high mem setting for now. My hottest core is hitting a whopping 50*C with the coolest one at 43*C

I'll post back when I hit rock bottom on the vcore to keep IBT stable

4ghz at 1.168v's currently running IBT(8-threads)(10 runs) on the high mem setting for now. No change in temps. The idle vcore is getting down pretty low tho. Had to use a - .100v offset to get the vcore down....Idle's at .888v's

 

[LOL_Wut_Axel]

There's a thead dedicated to that topic here.

Here's one graph:

And here is the overlay:

That seems very strange. Are you sure those numbers are real?

On a normal load (75-90% CPU usage) my system power consumption is around 125W and with Prime95 (full load on 4 cores/8 threads) it goes to around 195W. That seems hugely pessimistic.

Also, this is close to what I get:

 

[LOL_Wut_Axel]

This is my beater and I bought this cpu to overclock the hell out of it.Its getting replaced with a retail ivy when they hits the streets.Degration speeds up if you run linx 100% load all the time,this cpu never really went over 70c with normal day use.

Just for fun Im trying to see how much volts it needs to run lower speeds,im at 4.2 now with 1.250 v and about to run intel burn test.

edit

just ran 8 threads of latest itb with avx on and it passed 5 loops at 1.250 at 4.2ghz.I think I can get 4.3ghz under 1.3 volts so this cpu so far is not really bad on the low end

Yeah, the thing with degradation is that its effects are felt suddenly. Your chip might be working at a set frequency at a set voltage one day and the next day you could find yourself blue screening on a heavy CPU load. Just because you're fine now doesn't mean you will be in the future; that's my point.

Also, a better test for stability would be running enough loops of IBT so you can test for at least 12 hours, or half a day. 5 loops is pretty easy for any system. Folding@home is good for stability testing, too, even if it wasn't made with that purpose in mind.

 

[janas19]

http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU

Power consumption is lineal for the most part in Sandy Bridge. It's only when you go to about 1.35V and higher that it starts to rise very exponentially.

And you said you needed 1.32V for stability at 4.4Ghz.

1.32 < 1.35

 

[grkM3]

12 hours intel burn test? Nah im all set with burning up the vrms on my mother board.

I have a system of testing that 5 loops if itb is enough and i never get any blue screens.

If you can run 5 loops full avx itb and run 8 threads of 32m pi at the same time along with 3dmark 01 your cpu is stable.i also loop cinebench 3 times and if that wll passes the system is stable enough to do everything i need.

Long endurance itb runs strain the board and will crash at some point.iv had my 2600k since launch and its still stable so far.just did 4.6ghz for 1.365 volts and thats pretty spot on with how it clocked in the beggining,maybe a tad more vcore but thsts normal break in increase