5ghz

[Guest2]

Not that bothered to be honest. I'm now perfectly content with my 4.7GHz overclock @ 1.214v. I don't care about more as I just don't see the point. Voltage goes up loads, temps follow. Could delid, but 4.8 is all I would get under 1.3v, so why bother?

FYI, I lapped my e6600 for the lols back in the day.

At 1.214v is it stable in real bench? I tried that and handbrake crashed almost instantly when running the stress test. Im now at 1.275v in real bench stress test - its quite brutal on gpu & cpu

Edit - it turns out the crashes were a combination of too little vcore and too high clocks on gpu memory. Im happy enough at 4.7 with 1.275, max temp is 91 in real bench stress test

Off topic but are haswell known to be poor clockers? All this effort for .3ghz overclock! My Lynnfield managed a 1.2ghz overclock with worse cooling than i have now! Thats like taking the 4790k to 5.6ghz - anyone managed that?

 

[new boy]

At 1.214v is it stable in real bench? I tried that and handbrake crashed almost instantly when running the stress test. Im now at 1.275v in real bench stress test - its quite brutal on gpu & cpu

Edit - it turns out the crashes were a combination of too little vcore and too high clocks on gpu memory. Im happy enough at 4.7 with 1.275, max temp is 91 in real bench stress test

Off topic but are haswell known to be poor clockers? All this effort for .3ghz overclock! My Lynnfield managed a 1.2ghz overclock with worse cooling than i have now! Thats like taking the 4790k to 5.6ghz - anyone managed that?

Got a screenshot 7h 59m into realbench @ 1.218v

Spoiler

Up to you if you wanna belive I shaved off the extra 0.004v I guess lol.

EDIT - in case the fan RPMs are blowing your mind, due to some motherboard fan control issues I was having, CPU_fan 2 is a fan that does nothing, just flaps around in the case at low RPM all the time. CHASSIS_FAN 1 are my case fans and CHASSIS_FAN 2 are my CPU cooler fans.

IMO 91c is too hot for realbench... What temps do you get in games?

its more like a 500MHz overclock, as it does 4.2 all cores at stock.

5GHz is about the most you could expect a golden chip to run at at voltages you would want to run 24/7. Would probably need a delid and custom water though to keep that bad boy cool.

 

[Guest2]

What HSF are you using? One thing I noticed was my heatsink doesnt get that warm like they used to - surely this means heat is staying on the cpu and not transferring properly to the tower.

 

[new boy]

Noctua D14

 

[Guest2]

Ta. Do both radiators get hot or stay reasonably cool. I think i could be missing something such as too much / too little thermal paste or block not properly on the cpu. I put a pea sized amount on in the middle of the cpu (a grain of rice is a lot smaller than a pea what some people recommend) Maybe I put too much on

 

[new boy]

not sure really, bit of a pain in the ass to get the side panel off on my set up to be honest...

Pea sounds like quite a lot to me.

Did you use the right holes on the mounting bracket? on mine there are 3 different holes for different sockets. I had to google the manual to find out which ones I needed to use because I chucked out the manual for the cooler years ago.

 

[new boy]

Did a quick 5 min test at 1.272v and I hit 84c in those 5 mins. So the voltage coupled with a slightly lower performing heatsink probably make your temps about right.

 

[Guest2]

After 30 mins of real bench at 1.275 it hit 98c! Even for me thats rather high. Im sure im using the right holes for the mounting bracket but will check later (and also re-apply a smaller amount of paste

 

[Orangey]

When they say pea do they mean petit pois? That's what I've been assuming all these years.

 

[Guest2]

When they say pea do they mean petit pois? That's what I've been assuming all these years.

I assumed a petitpoi, yes. Though i suppose it could be a jumbo peo, or chick pea!

A grain of rice size is a lot smaller than a petitpois though

edit. Pic showing temps in spoiler

What is the diffreence between these two? I have 1.275 vcore set in BIOS.

Voltage - CPU VCORE - 1.284v - 1.296v
i7 4790k - VID - 1.275

It seems to have slightly lowered temps slightly by adding a small line of paste instead of a blob (similar to here - http://i1268.photobucket.com/albums/jj576/powerresponsibilityhow/20140626_195951_zps73832ecd.jpg )

Spoiler