Begin Overclocking at 1.285v

Rowan88

Rowan88

Rowan88

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Hi,

I read the max safe temperature for Intel chips was 1.3v. What I done was set my CPU volts to 1.285 and then OCCT tested my computer starting at 4.4GHz. At this it crashed within 1 minute of the test. I then lowered to 4.3GHz on the same volt and it is still running the test as we speak with max temperature in OCCT of 90, 89, 88, 82 on all four cores. HWMonitor shows a package temperature of 92. It hasn't stopped the test so can I assume this is stable and my next step would be reducing the core volt until it becomes unstable? (to lower the temperature?)

Thanks
 
The vcore does not = temp so this is incorrect. For example if you put 1.3v with stock cooler through your cpu then you might get 80c, but if you use a aftermarket cooler at 1.3v you might only get 40c or 50c.
I have a 6600k and a Noctua NH-D15 cooler, and when i pushed it at 1.4v it only hit 48c on the hottest core with a 30min stress test. Now if I had used a cheap cooler I might have hit the danger zone.
What CPU are you running and what cooler?
 
So if my computer is passing a few hours on OCCT large set and gaming without any problems then there is no need to reduce the core volt?

i5-4670k and BeQuiet Shadow Rock SR1 Pro
 
No you can reduce the vcore if it still runs stable. But my point is volts does not = temps. You need to get the best speed for the lowest volts possible, thats the goal.
And if you say get 4.4ghz at 1.285v but have to go to 1.35v for 4.5ghz then 4.4ghz is the best for you. This is beacuse for all the extra heat and volts you are not going to get much in return for the extra heat and shorter life span of your cpu.
Go with whats best for your CPU and stick with it.
 
I haven't went above 1.285 as I got told 1.3 was the maximum for my chip... So I would settle for 4.3Ghz from 3.4Ghz.

I have changed it to 1.250v and re-running OCCT as that seems to be the most used for for detecting instabilities quickly.. so far running no problem.

How long is a decent test 1hour? (before I start doing a full 8 hour overnight one)
 
I would not go much above 1.3v to get a little more speed, its just not worth it so stick with what you have 4.3ghz is good.
If you are getting more than 75-80 I would upgrade my cooling to be safe. But under that is good and will keep it running
for much longer than if it was hotter.
 
Well the fact it was crashing instantly on 4.4 @ 1.285 tells me I cannot get that high on this chip without overshooting the recommended limit of 1.3

I tested a few times on 4.3GHz:

@1.285 - Running games fine, passed 55mins of OCCT Large
@1.250 - Passed 30mins of OCCT Large
@1.230 - Crashed 28mins into OCCT Large
@1.215 - Crashed 11mins into OCCT Large

Right now I am going to run a 1.280 OCCT and will leave it hopefully 2 hours. Is that enough to assume it is stable?

I forgot to mention the maximum temperature it ever hits on OCCT is about 85 degree but OCCT never cancels the test so I am assuming it is a safe temperature?
 
Ok I got 1hour20mins in and I got Core 0 Stopped: over maximum value.. So I am assuming it is getting too hot to be stable? If so what would I need to do reduce the multiplier?

I reduced to 4.2GHz @ 1.280 and so far its still running 1hr55mins with a maximum temperature from OCCT of 88 (90 in HWM) but seems to stick around about 72-78 throughout the test.

OCCT42.jpg
 
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4.3ghz is good and you will not miss out much from 4.4ghz. But to be sure of a stable speed back it off to 4.2ghz and make do with that, as this is still a good speed and will not kill the cpu too soon.
If you need faster then a upgrade would be best option for this.
 
I can get 4.6ghz from my 6600k, but I have it at 4.2ghz beacuse its not much of a gain. I could run it faster but I will not notice the extra speed enough to loose a bit of life in the CPU.
 
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