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i7 3770k safe/max voltage.

post #1 of 25
Thread Starter 
Im currently running 1.4v for 4.7ghz, but I can increase the voltage before i reach my max temps. But I want to know is it safe as I have seen some people go to 1.5v with ivy or sandy bridge.

Thanks

Im using offset mode:
1.29v - VID
+0.15v - offset
1.8v -PLL
Medium - LLC

Thanks
post #2 of 25
Quote:
Originally Posted by mpatel93 View Post

Im currently running 1.4v for 4.7ghz, but I can increase the voltage before i reach my max temps. But I want to know is it safe as I have seen some people go to 1.5v with ivy or sandy bridge.
Thanks
Im using offset mode:
1.29v - VID
+0.15v - offset
1.8v -PLL
Medium - LLC
Thanks

Sandy has a higher voltage threshold, What are your max running temps ? 1.4v seems high for a 4.7ghz overclock
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post #3 of 25
Thread Starter 








Here are some screenshots of my bios. Note that my bios shows LLC at Ultra Extreme/High but Its Medium as I changed it.

Just as a guide for 4.5ghz I had:
PLL- 1.6v
Manual Mode - 1.265
LLC - High

For Offset mode at 4.5Ghz:
PLL-1.8
Offsetmode - 0.5v
LLC - Medium

Any Suggestions to help me lower the voltage tried increased the LLC but shoots up my voltage to 1.48. Also temps seem to be fine.

Thanks
post #4 of 25
Thread Starter 
All The max temp I hit using that setting was 83 degrees.
post #5 of 25
Try these settings for offset:

IGPU Voltage - Auto
CPU PLL Voltage - 1.7000v
Other voltages left on Auto
CPU Spread Spectrum - Off

CPU LLC - Ultra High
CPU Voltage Frequency - Manual
CPU Fixed Frequency - 350
CPU Power Phase Control - Extreme

CPU C1E and Enhanced Intel Speedstep Technology - Enabled
CPU C3 & C6 Report - Disabled
Package C State Support - Disabled
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post #6 of 25
Thread Starter 
Thanks,
I just tried those settings getting voltages of 1.46.


Any suggestions?
Edited by mpatel93 - 9/19/12 at 2:03am
post #7 of 25
Thread Starter 


Another update, I decded to change the offset voltage from 0.145 to 0.1, this time it started up and seems to be stabel for 15 minutes, but getting voltages of 1.4v again.
Anything else that might help lower the overall cpu-z voltage as I would ideally like it as small as possible. I cant seem to lower the offset voltage then I start to get BSOD.

Thanks
post #8 of 25
If you want to set an offset voltage you need to first figure out what your minimum voltage needed to run whatever your OC'd clock speed will be without an offset. Then you once you figure out the best minimum voltage you can run whatever your desired clock speed will be at you need to run prime 95 and then using a program(s) like CPU-Z + realtemp (What I use)you need to take a look at your voltage under load and your VID underload and then compare and figure the difference. I'm terrible at explaining so here:

Offset

Once you have 'found' your desired overclock, assuming you have followed the guide above, you should be using manual voltage and the correct level of LLC to determine and eliminate the vdroop as much as possible, then all you do is the following:

Once you know what vcore you require under load, using cpu-z you can work out the offset by using the VID. When running your cpu under load to read vcore, you can do the same to read the VID. That can be achieved by running prime with cpu-z and realtemp. The difference between the load voltage in cpu-z and the VID you see in realtemp is the offset amount you're looking for.

For example if your VID is 1.3875 under load and your cpu-z vcore under load is 1.4275, the offset will be a positive amount from the VID, so it'll be +0.040 (1.3875 + 0.040 = 1.4275)

If the VID is 1.3875 and your cpu-z vcore is lower, say 1.3675, the offset will be a negative value of from the VID, which is -0.020 (1.3875 - 0.020 = 1.3675)

That's all there is to it, if you have issue's with offset like idle / random BSOD's please refer to the many links available in the Stable club or in my Sig.

The full little guide can be found here:

http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/2240#post_14466483

Or check out sins guide.

Your voltages seem pretty high to me, I bet you could get much lower. I can get a stable OC of 4.8GHZ at 1.35 Voltage and that's on a 2700k which seem to require a bit more juice to hit clocks then ivy's do., I might be able to go even lowed but I haven't bothered to do 12 hour stress tests again as I don't have the patience for it. Every chip is different though and they are not equal.

ALSO NOTE that if you are BSODING at idle you need to disable CS, and C6 state as these can cause the processors voltage to drop too low when using offset voltage overclocks EDIT: I should add that this only applies to when you have actually already set-up the offset voltage OC, If you are Bsoding at idle when you are running straight up voltage then your OC is unstable..
Edited by immakulate - 9/19/12 at 2:32am
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post #9 of 25
Thread Starter 
Thanks a lot I have decided to go back and calculate the stable manual voltage. I want to know what is the highest voltage I should or can use which will have the smallest amount of effect to the processor life? Thanks
post #10 of 25
AS far as chip life goes I can't really say you shouldn't worry about it, but I personally wouldn't worry about it. If you keep temps in check and aren't going above 1.4ish voltage for 24/7 use I think you can expect your chip to last long enough to where it becomes obsolete before it ever bites the dust. I'm running 1.35V straight voltage at the moment for my OC without even bothering with an off-set and I have no worries at all about killing my chip, or it even degrading. My idle temps are low 30's and game load is 40-50C maybe higher on hot days.

There are people that have been running their sandy chips at 1.4+V and not had any degradation at all and going strong after a year plus, some of them folding nearly 24/7 keeping their chips under constant load.. I think as long as you keep your temps in check and don't go completely over-board on the voltage you should be ok.

Like I said before your chip will probably be long obsolete before you will ever even worry about it dying.
Edited by immakulate - 9/19/12 at 2:43am
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