i7 2700K overclock check

[titaniumx3]

I haven't overclocked a CPU in ages and would like some advice, but below is my first attempt at something stable and for 24/7 use:

This is on an Asus P8Z68-V/G3 and I pretty much just upped the turbo multiplier to 46 and left everything else on auto, except memory setting which I set to 1600mhz/9-9-9-24-1T/1.5v as stated on the specs.
Mostly worried about voltage and what exactly is safe for 24/7 usage (or at least normal usage). I've seen the voltage spike to 1.4 when the frequency goes up to 4.6, but it's only momentary.

Is this safe or should manually tweak the voltages, if so, what would you recommend?

I'm happy with 4.6ghz for my purposes, but don't want to damage the CPU or anything.

 

[Davefran]

Looks pretty good you should be able to get the vcore a little lower, and put the threads on 8 in IBT
Have you got Windows SP1 installed as your Gigaflops should be over 120

 

[zoomee]

Threads on IBT should be set to 8 - not 16 mate
1.32v is a bit higher than what most are using here - and spikes upto 1.4v ain't good!!

Ideally you should be looking at 4.6 @ approx 1.3v. Mine runs 4.6 @ 1.298 > 1.304.

As long as temps keep below mid 70's using IBT Maximum (8 Threads) you should be ok

 

[titaniumx3]

I've got Windows 7 Pro with SP1 and all other windows updates. Why would gflops be lower?

The reason I put the threads at 16 was because at 8, cpu usage isn't 100%.

 

[zoomee]

I've got Windows 7 Pro with SP1 and all other windows updates. Why would gflops be lower?

The reason I put the threads at 16 was because at 8, cpu usage isn't 100%.

CPU useage goes up to 100% about 10-15minutes into the maximum test, not straight away mate. And having 16 threads will be the reason why your GFlops are lower than usual

 

[titaniumx3]

Yeah, seems to be around 100gflops now with 8 threads. I think I may have had it set to auto before, which is why there wasn't 100% cpu load.

I'm fiddling with the voltages manually now, see if I can get it stable at 1.3, without any spikes to 1.4.

Fingers crossed, will report back!

 

[titaniumx3]

I've been trying to manually set the voltage but nothing works, either I get bsod, windows failing to boot or errors. I've tried setting voltage close to 1.3v using both manual mode and offset mode, but no luck. The closest I got was using the following setting, but it failed IBT after 9 runs (maximum setting):

BCLK freq: 100
Turbo ratio (by all cores): 46
PLL overvoltage: disabled
EPU power saving mode: disabled

LLC: auto
VRM Freq: 350
Phase control: Extreme
Duty control: Extreme
CPU current capability: 140%

CPU voltage (offset mode): -0.04
DRAM voltage: 1.5
(all other voltages: auto)

Using these settings CPU voltage never goes above 1.312v and temps stay below 70C.

Also the fact that it got an error after 9 runs of maximum IBT has got me woried that it may not be stable at lower speeds, hence why I'm rechecking my stock settings with 20 runs.

Any ideas on what the problem could be?

 

[titaniumx3]

BTW what is considered stable (for normal/heavy use) in IBT?

 

[demonstag]

You are using the same board and cpu as me, I would set:
PLL Overvoltage = enabled
LLC = Extreme
VRM Freq = Auto
Phase Control = Extreme
Duty Control = Extreme
CPU current capability = 140%

Try those settings and see how you get on. What cooler are you using? I find that [email protected] is prefered for 24/7 depending on cooler.

I am able to get [email protected] & 5.0Ghz @1.41v

With regards stable most will suggest a few hours of Prime95 (Blend)

 

[titaniumx3]

You are using the same board and cpu as me, I would set:
PLL Overvoltage = enabled
LLC = Extreme
VRM Freq = Auto
Phase Control = Extreme
Duty Control = Extreme
CPU current capability = 140%

Try those settings and see how you get on. What cooler are you using? I find that [email protected] is prefered for 24/7 depending on cooler.

I am able to get [email protected] & 5.0Ghz @1.41v

With regards stable most will suggest a few hours of Prime95 (Blend)

Thanks, I will try those settings when I push further, but for now I think I've managed to get 4.6ghz @ 1.312v, without any odd voltage spikes (plus sub 1.0v when idling). This is stable after 20 runs of IBT at maximum though, so not sure if it's totally stable, but been using the computer for pretty much everything I normally do and have had no problems.

I'm using a Thermalright Silver Arrow cooler and the highest I've seen one of the cores go is 73C during an IBT run, but this the absolute max, normally temps hover around 60C during IBT and under 50C for prime95.

Will probably try for something higher later on, but for now I'm happy with 4.6ghz.

 

[demonstag]

Those appear to be alright temps on air. with regard to stable OC there is a difference of opinion, some say 8Hours+ of Prime some say IBT. Personally I check all OC with Max IBT 8 threads and if all is well leave prime for a few hours and also use the sytem as normal if OK then OC stable. Hope the settings help when you push the OC further