i7 3770K 4.9 GHz - Safe Voltage?

[Cwazywazy]

Nope, It's both Voltage and Heat that contribute to killing a chip. Even if the high voltage doesn't make your chip particularly hot, it can still prematurely age the chip.

Hmm. 

 

And some chips are much more sensitive to voltage than others, right? (My A8-3850 runs almost 1.4v stock.)

[TheDigitalRealm]

Hmm. 

 

And some chips are much more sensitive to voltage than others, right? (My A8-3850 runs almost 1.4v stock.)

Exactly. My particular chip runs at a relatively high 1.12V at stock under load, while my previous i7 ran at 1.0V at stock under load. It's fascinating how much they vary when created under the exact same process.

[austin541]

that is one damn fine chip you got there. 

[TheDigitalRealm]

that is one damn fine chip you got there. 

Why thank you.  

[Wats]

Intel cpus are rated to run at varied voltages (0.650v-1.520v) and frequencies. Read a little bit of the ivy bridge datasheet for more information. (like Max Tcase temp, 67.5c, Tcase is your cpu temp in BIOS)

 

So.. my idea of safe voltage.. I know my 3570k does 4.9 @ 1.4v, which is fine. Spikes to 1.44v when it really gets going while having a idle vcore of 1.168v. 100% load core temps are just below 80c, Tcase 51c....still not delided.

 

yea, speedstep and offset voltage give you... 1.6 idle to 4.9 turbo. or what ever you set.

 

 

Little more info on my particular chip... does the stock 3.4 at about 0.9v.

 

 

 

was this helpful at all.. just woke up. If you want a guide on offset overclocking, i've been itching to write up one.

[TheDigitalRealm]

Intel cpus are rated to run at varied voltages (0.650v-1.520v) and frequencies. Read a little bit of the ivy bridge datasheet for more information. (like Max Tcase temp, 67.5c, Tcase is your cpu temp in BIOS)

 

So.. my idea of safe voltage.. I know my 3570k does 4.9 @ 1.4v, which is fine. Spikes to 1.44v when it really gets going while having a idle vcore of 1.168v. 100% load core temps are just below 80c, Tcase 51c....still not delided.

 

yea, speedstep and offset voltage give you... 1.6 idle to 4.9 turbo. or what ever you set.

 

 

Little more info on my particular chip... does the stock 3.4 at about 0.9v.

 

 

 

was this helpful at all.. just woke up. If you want a guide on offset overclocking, i've been itching to write up one.

I think the 'safe' 1.3V thing has spawned because of the fact that yes, an Intel CPU is rated to run at the voltages you stated, running at a high voltage (1.32v) all the time means your CPU won't last as long as it would on a permanent voltage of 1.1v. I've got my results through manual overclocking, so I'd very much like to read a guide on offset overclocking as it'd be nice not to have my CPU running at 1.32V when idle.

[TheDigitalRealm]

I'd love to be able to run my chip at 5GHz turbo and not run at 1.32V all the time.

[Jumper118]

that is a great chip 5ghz is high for ivybridge.

 

I'd love to be able to run my chip at 5GHz turbo and not run at 1.32V all the time.

[Recon-UK]

I hope you are just benching. Keeping that oc 24/7 would be really dangerous for your cpu.

Ha gaaayyyyyyyyyy...

1.4v 5g's playing pac man like a spaceman at 88c under prime biatcho

[TheDigitalRealm]

that is a great chip 5ghz is high for ivybridge.

Even for Sandy Bridge, 5GHz is high.

[Recon-UK]

Indeed, though 1.4v is the limit On sb apparently, i hit 94c at 5.2ghz at 1.47v lol.

[TheDigitalRealm]

Ha gaaayyyyyyyyyy...

1.4v 5g's playing pac man like a spaceman at 88c under prime biatcho

Nice! I'm getting better results that Sandy Bridge.

[Jumper118]

Even for Sandy Bridge, 5GHz is high.

i think its pretty standard tbh. 90% of sandys will do 5ghz if you give them enough voltage. its not that they get unstable like haswells. 4.8ghz is fairly average on a sensible voltage that would run under 70c on most air coolers.  

Indeed, though 1.4v is the limit On sb apparently, i hit 94c at 5.2ghz at 1.47v lol.

1.5v is the limit on sandy if you are under water. they last about 18-30 months a that voltage as long as you keep em chilly

[Recon-UK]

Well my chip has done 2+ years and no sign of degradation.

I use an early H100.

[othertomperson]

Well my chip has done 2+ years and no sign of degradation.

I use an early H100.

 

I would second. I've had a sb-e cpu since I was a complete noob two years ago and have been, er, less cautious than I should have been both in terms of voltages and temperatures, and frankly it's held up fantastically. I wouldn't exactly want to test how "durable" it is, but it seems moreso than people think.

[TheDigitalRealm]

i think its pretty standard tbh. 90% of sandys will do 5ghz if you give them enough voltage. its not that they get unstable like haswells. 4.8ghz is fairly average on a sensible voltage that would run under 70c on most air coolers.

I believe Sandy Bridge CPU's are one forgiving on the voltage side, more so than Ivy Bridge.

[Jumper118]

I believe Sandy Bridge CPU's are one forgiving on the voltage side, more so than Ivy Bridge.

they are because there are 32nm so the heat is spread out more meaning it can run more voltage and still keep really low temps. also when you've finished ocing you could post your score in ma thread http://linustechtips.com/main/topic/62476-post-your-cinebench-r15-scores-and-new-r115-scores-now-included/ you have a pretty good chance of getting the top score for socket 1155 and a high position overall. 

[TheDigitalRealm]

they are because there are 32nm so the heat is spread out more meaning it can run more voltage and still keep really low temps. also when you've finished ocing you could post your score in ma thread http://linustechtips.com/main/topic/62476-post-your-cinebench-r15-scores-and-new-r115-scores-now-included/ you have a pretty good chance of getting the top score for socket 1155 and a high position overall. 

I will, I'll run every benchmark I can get my hands on while my chip is still at 5GHz.

[ViruZ_HUN]

So, after sorting out problems with the H100i's LGA 115X mounting bracket being loose, (I put an extra 1-2mm of thickness on the rear mounting bracket, which led to the bracket holding the Copper Block/Pump being held closer to the processor. Now the bracket no longer has any "wiggle room" and is a tighter fit on the motherboard. It was a very "ghetto" job. I cut up the Elder scrolls Online sticker that came with Skyrim Legendary Edition and layered it on. I'll post the temperatures I was getting before, and what I got after fiddling with the mounting bracket. 

 

So, after some hours spent over-clocking, I've reached 4.9 GHz and am currently running AIDA64 as I type this. These are the results I've gotten: 4.6GHz @ 1.17V, 4.7GHz @ 1.19V, 4.8GHz @ 1.21V, 4.9GHz @ 1.27V I may try and reach 5GHz later @ 1.29V, but if I can't reach 5GHz under 1.3V then I won't bother. I'm going for it!

 

So this was taken from the stability test I'm currently running: 5GHz @ 1.32V

stabilitytest - Sabertooth - 5GHz - remount.png

 

This was before I fiddled with the H100i mounting, and the temperatures were higher at stock clocks than now at 4.9 GHz!

stabilitytest - Sabertooth - Stock - before re-mount.png

Higehr the voltage a bit and go for 5 ghz:)

[Jumper118]

I will, I'll run every benchmark I can get my hands on while my chip is still at 5GHz.

glad to hear it!  i look forward to seeing the results

[TheDigitalRealm]

Higehr the voltage a bit and go for 5 ghz:)

I don't think you've read my post properly or looked at the upper most picture.

[Cwazywazy]

Exactly. My particular chip runs at a relatively high 1.12V at stock under load, while my previous i7 ran at 1.0V at stock under load. It's fascinating how much they vary when created under the exact same process.

Wow. My laptop Core 2 Duo was something like 1.2v stock but it can run at max speed perfectly stable at 1.0v. (2.55GHz.) And it can run at 1.8GHz at .9v. (Can't go lower than .9v.)

[Wats]

I'd love to be able to run my chip at 5GHz turbo and not run at 1.32V all the time.

Hey, the day is over. here's a quick guide if you want to dabble

 

Disable any load line calibration

set power phases to optimal or max or whatever your mobo says

turn speedstep on

 

take note of the vcore needed for said OC

set multi to 40x.

start with a +.050 offset

start a load, like cinebench.

take note of vcore during test

increase offset if needed (ex: +0.080V from +0.050V)

repeat until load vcore reaches what is needed for said OC

Now add an extra couple mV (add 0.020V) on top for good measure.

set multi to said overclock and test for days and days with everything

 

You will have a "spike" voltage with an offset. It's ok, you get lower idle power usage.

[gigabyte]

You realize that your processor is worth like $1000+... That's like a 1/1,000,000 chip...

[MrBucket101]

Yeah that's a golden chip

My 3770k needs 1.35V for 4.6 GHz stable. I run 1.305V 24/7 @ 4.5GHz