Is my OC safe to leave on 24/7?

[Razor1289]

Specs:
CPU: i7 950 OC'ed to 4.4ghz
Mobo: Gigabyte UD3R
PSU: 700W OCZ Modxstream
CPU Cooling: Corsair H70 CPU Watercooler

BIOS Settings:
LLC: Enabled, Level 2
Multiplier: 23
BCLK: 192

CPU Vcore: 1.4v
QPI/Vtt: 1.5v
DRAM: 1.64v
Other voltages left on default/auto.


Temps:
Idle: ~40-44C
Load(100% using Intel Burn Test): ~76-80C

I used Intel Burn Test only so far to test for stability, and was able to do 40 runs and no crashes with the temperatures never reaching beyond 80C on load.

I'm just wondering if my voltages and temperature are safe enough to leave it on 24/7?
By safe, meaning it won't kill my CPU, mobo, or other components in the next ~4-5 years.

Thanks

 

[n7]

Honestly, both VTT & vcore are above levels i'd be comfortable with, especially VTT.

What is vcore under load?

And try to get it stable with less VTT...

 

[Spikesoldier]

950 @ 4.4 - nice.

agree with n7, is that the lowest vtt the chip is stable at?

 

[Mr. Pedantic]

Yeah, VTT looks dangerous. Try get it down a bit. Temps are also a bit high for my liking, but it should be okay.

 

[Rifter]

that QPI/VTT is higher than i would go as well

 

[Markfw]

I have 2 of the above running 4.1 24/7 for 3 months no problem.

some of your voltages look high for 24/7

 

[Razor1289]

Vcore on 100% load fluctuates between 1.392v to 1.408v reading from CPU-Z.

Unforunately this is as far as the chip goes, I've tried lowering the QPI/VTT and it starts crashing and becomes very unstable.

What would you guys say is a generally safe/OK range for QPI/VTT voltage when overclocking at this range?

 

[Razor1289]

Also, does it matter if I change the multiplier and BCLK from 23 x 187 to say 21 x 210 in order to achieve 4.4ghz?

 

[Spikesoldier]

i would imagine that 210bclk would require even more vtt since you are increasing the qpi frequency.

i would not expect that chip to last 4 to 5 years @ your 4.4 config. im throwing a similar amount of vcore to my i5 and while i dont expect it to last that long either, pushing the limit is still worth doing. it just depends on whether you are willingly ready to replace it if it goes out and can shell out the cost of a new(er) replacement and chalk it up to the game.

 

[brencat]

Seriously...1.5v QPI/VTT ??

Intel stated max is 1.40v. For 24/7, I would think 1.35v should be the max you should use. Would also think that should be enough if you are using < 200 Bclk and don't have all 4 RAM slots populated.

 

[Razor1289]

I've been playing around with the overclock some more, and I noticed that there is a huge gap in QPI/VTT voltage to get from 4.3ghz to 4.4ghz stable.

At 4.3ghz, it is stable with vcore at 1.375v and QPI/VTT at 1.4v

Are these voltages more acceptable/reasonable for 4.3ghz?

 

[aigomorla]

VTT: 1.375 typical max if you have aftermarket cooling.

1.325 is MAX per spec intel's data sheet.

no more then 1.4vcore with aftermarket sink, with the exception on older i7's like C0/C1, which can do 1.5vcore under REAL WATER setups. (you wont keep up with the heat output on a C1/C0 unless ur on a real water setup.)

no more then 1.66 for ram... i dont care who makes them or how expensive they were with fancy sinks and what nots.
Those ICS are spec'd at 1.5V which the manufactor overvolts themselves for the higher clock speed. Becareful when putting a lot of load on your ram @ high voltages.


Now you need to run load tests on it, and see if your sink can keep up with heat load.

 

[Razor1289]

So I settled on leaving it at 4.3ghz and the lowest i can push the voltage that can run stable is vcore 1.36250v and QPI/VTT at 1.38v with the temperatures not going beyond 77C on 100&#37; load using Intel Burn Test with Max settings and 40 runs.

Are these settings acceptable or do i have to clock it down some more to be on the safe side on voltage and temps?

 

[Baasha]

Do you have HT on? 4.3GHz with HT on is a really good clock if your stress tests came out successfully.

Also, have you tried to use OCCT?

Your QPI/VTT is a bit high as others have said. Personally, any voltage above 1.35 is risky IMO, especially on air.

 

[Ajay]

Temps:
Idle: ~40-44C
Load(100% using Intel Burn Test): ~76-80C

I used Intel Burn Test only so far to test for stability, and was able to do 40 runs and no crashes with the temperatures never reaching beyond 80C on load.

I'm just wondering if my voltages and temperature are safe enough to leave it on 24/7?
By safe, meaning it won't kill my CPU, mobo, or other components in the next ~4-5 years.

Thanks

Under load 24/7 or just on 24/7? If it's not under load 24/7 and you have C-states enabled, you shouldn't have a problem. You are taking a risk though, whenever you go for a high overclock. If you want to run @ full load (for DC, etc) you would lower your risk by getting temp down with better H2O cooling.

As Spikesoldier said - it's up to you and your wallet to determine what is "safe".

 

[OCGuy]

I'm going with no. See what 4.2 does for you.

I've only had the chip since Xmas, havent even ventured in that territory yet as you can see from my sig.