Doing some awesome overclocking.

[Zvesda]

Been reading a lot and im building a new PC in the next few weeks my parts for this are, Corsair H100i and a ROG Maximus VII formula z97 with a I7-4790K My plan for overclocking as as follows

 

1: Just do some stress testing at 100% with no overclock. So just 100% load with 4.0ghz. I do not want temps over 65c

 

2: If that works, go to 4.6ghz and put voltage at 1.3. No temps over 65.

 

3: If that works, go to 4.8ghz and put voltage at 1.35. no temps over 65

 

What do you think?

[Enderman]

lol with 1.3v you're definitely gonna get temps over 70C

[Guest MinimalEffort]

Yeah, probably won't go 100% to plan with those temps.

[Zvesda]

Would a 4.6ghz overclock be do able with a 1.25 volts?

[Prysin]

You would probably need a 280 or 360mm radiator to dissipate all that heat.

 

THAT, or get noctuas NFF12 IPPC fans. They sound like a WWII bomber is coming to get you, but they really know how to push air. They will completely and utterly destroy your H100i's stock fans when it comes to efficiency

[Queek]

1: Just do some stress testing at 100% with no overclock. So just 100% load with 4.0ghz. I do not want temps over 65c

 

Make sure you turn it to manual voltage when you're doing that, otherwise synthetic stess tests will significantly increase the voltage supplied to your cpu.  

[Zvesda]

Make sure you turn it to manual voltage when you're doing that, otherwise synthetic stess tests will significantly increase the voltage supplied to your cpu.  

 

How many volts should i set it to for that first test?

[Queek]

How many volts should i set it to for that first test?

Just set it to 1.2V, which will be overvolting, but still well within the safe voltage range of that cpu.  That should be enough.  

[runit3]

Been reading a lot and im building a new PC in the next few weeks my parts for this are, Corsair H100i and a ROG Maximus VII formula z97 with a I7-4790K My plan for overclocking as as follows

 

1: Just do some stress testing at 100% with no overclock. So just 100% load with 4.0ghz. I do not want temps over 65c

 

2: If that works, go to 4.6ghz and put voltage at 1.3. No temps over 65.

 

3: If that works, go to 4.8ghz and put voltage at 1.35. no temps over 65

 

What do you think?

 

What's the obsession with 65C? The CPU is perfectly safe up to 85C during synthetic benchmarks (briefly). You'll never hit the sustained temps during a stability pass that you would during normal operation, and you certainly won't want to use those temps as a baseline for normal operation.

 

As for the voltage stepping, unless you're going to delid and use CLU you'll never be able to keep it under 65C @1.3v in something like AIDA64 or XTU. The voltage:clock ratio looks like a good prelim run for a decent chip.

 

I'd keep the voltages the same but adjust your temp expectations accordingly:

1. 65C

2. 75C

3. 80-85C

 

Better TIM application for certain chips will yield ~10-20% difference, same % the opposite way for worse applications. It's been pretty variable for all Haswell's, but the Devil's Canyon's are on average much better.

[Guest]

Sounds more optimistic than awesome.