Overclocking i7 4790k with 212 evo

[icarlx]

I want to overclock my 4790k to 4.6 ghz and i have a 212 evo. Is it able to keep nice and cool or i have to buy better cooler?

[harrynowl]

Will be fine for a 1.3v (which is the recommended voltage) overclock.

 

I'd just shoot straight for 47 multiplier and 1.3v.

[Enderman]

unless you get really lucky you wont be able to get to 4.6 with a 212 evo

[Enderman]

Will be fine for a 1.3v (which is the recommended voltage) overclock.

 

I'd just shoot straight for 47 multiplier and 1.3v.

a 212 evo will not keep a 4790k below 85C at 1.3v

[harrynowl]

unless you get really lucky you wont be able to get to 4.6 with a 212 evo

Yes he will.

[Enderman]

Yes he will.

no

that will likely require 1.2v or more

unless he gets lucky like I said

 

and a 212 evo is not enough for that voltage unless you enjoy letting your CPUs overheat every time you do something intensive

[ManWithBeard1990]

Yeah, with the 212 at higher TDPs you start to see temperatures climb quite quickly. Remember, it only has four heatpipes and if the power is more than they can handle comfortably, performance just falls off a cliff no matter how fast your fans spin.

[icarlx]

But what cooler should i buy then, should i buy the h80 or save up and buy h100 little later and in the meanwhile stay on the stock speeds?

[daniellearmouth]

Yeah, with the 212 at higher TDPs you start to see temperatures climb quite quickly. Remember, it only has four heatpipes and if the power is more than they can handle comfortably, performance just falls off a cliff no matter how fast your fans spin.

 

This is kind of why I personally recommend either getting a closed loop or a Noctua cooler for overclocking, since they can handle the heat better than the Cooler Master.

 

That's not to say the Cooler Master's a bad air cooler at all. In fact, it's a really good cooler. But for overclocking, I wouldn't personally recommend it on relatively high end CPUs.

[harrynowl]

no

that will likely require 1.2v or more

unless he gets lucky like I said

 

and a 212 evo is not enough for that voltage unless you enjoy letting your CPUs overheat every time you do something intensive

My personal experience leads me to disagree.

 

Intel's problem is mostly with heat transfer not with heat produced. Devil's Canyon reduced the problem but doesn't eliminate it. A 212 is capable of dissipating about 180W of heat.

 

I ran my 4690K @ 1.32V and under Intel XTU (so highest stress on multiple instructions) I saw 82c as a peak temp on it, spending most of the time between 75 and 80c.

 

Let's assume HT adds 5c to max temp because they are the same die otherwise, we peak at 87c theoretically. A bit on the high side but otherwise safe.

 

Intel rates the TJ Max at 100c. So we are over 10c under TJ Max under a full synthetic load.

 

In gaming or other tasks I see between 60 and 70c. At 1.32V, so the extra 20mV probably makes up for the rough 5c gap between the two.

 

This was with my fans at inaudible levels.

[Enderman]

My personal experience leads me to disagree.

 

Intel's problem is mostly with heat transfer not with heat produced. Devil's Canyon reduced the problem but doesn't eliminate it. A 212 is capable of dissipating about 180W of heat.

 

I ran my 4690K @ 1.32V and under Intel XTU (so highest stress on multiple instructions) I saw 82c as a peak temp on it, spending most of the time between 75 and 80c.

 

Let's assume HT adds 5c to max temp because they are the same die otherwise, we peak at 87c theoretically. A bit on the high side but otherwise safe.

 

Intel rates the TJ Max at 100c. So we are over 10c under TJ Max under a full synthetic load.

 

In gaming or other tasks I see between 60 and 70c. At 1.32V, so the extra 20mV probably makes up for the rough 5c gap between the two.

 

This was with my fans at inaudible levels.

the 4790k runs about 10C hotter than the 4690k

 

and going over 85C is out of the safe zone

 

keep in mind the 3770k runs cooler than the 4770k and 4790k

[harrynowl]

the 4790k runs about 10C hotter than the 4690k

 

 

and going over 85C is out of the safe zone

 

keep in mind the 3770k runs cooler than the 4770k and 4790k

At stock; yes.

 

The 4790K comes at a higher turbo voltage out of the box to achieve that 4.4Ghz rating.

 

I've seen chips validated at ~1.2V out of the box at max turbo.

 

Look at the 2 overclocked speeds on your graph at the top there, the 4790K at 4.8GHz is 4c more than the 4690K at 4.6GHz. But they didn't say what was cooling the 4790K...

[ThomasD]

I say go for it.  Though, for max potential you probably should upgrade to a pair of quality SP fans in push pull.  And remember that no air cooler works well unless you supply a steady flow of cool air through the chassis.

 

Work up your OC slowly and you might be pleasantly surprised.  Otherwise it was a relatively inexpensive experiment.

[ManWithBeard1990]

This is kind of why I personally recommend either getting a closed loop or a Noctua cooler for overclocking, since they can handle the heat better than the Cooler Master.

 

That's not to say the Cooler Master's a bad air cooler at all. In fact, it's a really good cooler. But for overclocking, I wouldn't personally recommend it on relatively high end CPUs.

It's very good, in fact. But there's a threshold above which the temps start to climb rapidly with increasing TDP, which is true for any heatpipe cooler. An overclocked 4790k is past that threshold for the 212.