Hi!

 

Specs:

 

ASUS Motherboard Maximus Hero IV

i7 4770K

Crucial DDR3 BallistiX Sport 1600MHz 8GB

 

 

I'm struggeling to get any higher than 4,4 ghz, which I can run pretty stable with Prime 95 stress testing. Temperatures during max load are around 80 degrees (I actually managed to gain 20 degrees by applying new thermal paste. From before during load I got 99-100 degrees  )

 

Anyway, I have a vCore set to 1.3 V, which I know is a little bit high, but many claim that the i7 4770K can handle it pretty well. If I set the multiplier to 46 and run the stress test, it fails with blue screen after 3 seconds. A multiplier of 45 runs for about 7-8 min with vCore set to 1.31 V. DRAM frequency is set to 2133 mhz. 

 

Are there any ways of increasing the clock without increasing vCore? Of course, I have adjusted the initial and eventual CPU voltage, by I assume vCore is the main determinant. Many would be happy with 4,4 ghz but I'm getting a notable increase in frames (in FSX) by the extra 200 mhz.

 

Thanks

Forgot to tell I have an Corsair H60 watercolor

Forgot to tell I have an Corsair H60 watercolor

 

Have you manually set your Vdimm at whatever your RAM is rated?

You can also play with the CPU cache voltage, CPU cache ratio, Load Line calibration, Current capability... there are many settings you can try, but sitting at 80ºC already, I'm not sure I would try pushing it any higher than those 4.4GHz

Have you manually set your Vdimm at whatever your RAM is rated?

You can also play with the CPU cache voltage, CPU cache ratio, Load Line calibration, Current capability... there are many settings you can try, but sitting at 80ºC already, I'm not sure I would try pushing it any higher than those 4.4GHz

 

Sorry, I typed wrong. The CPU is actually around 75 degrees during full stress load (44 ghz and 1.3 V). The temperature rises to 80 if I try a multiplier of 45 and a vCore of 1.31. During normal surfing etc its only 30 degrees and FSX only gives around 55 degrees. 

 

I've seen other forum post where people claim the chip can handle 1.4 V just fine, and its probably necessary if one want to reach lets say 4.8 ghz. And yes, I have manually set the Vdimm. 

 

 

I actually managed to gain 20 degrees by applying new thermal paste.

 

That's good.

What paste did you use?

And when you say new do you mean new as in just different or was the original paste past it's use by date?

 

Thanks,

gb.

That's good.

What paste did you use?

And when you say new do you mean new as in just different or was the original paste past it's use by date?

 

Thanks,

gb.

 

Cooler Master IC Essential E1 paste.

 

I've been using this since I build my rig, so no new thermal paste. The last time I applied was in the summer, but I suspect it was pretty bad. I difficult to mount the head of the water cooler onto the CPU and at the same time connect/hold the clamp on the other side of the motherboard. This time I found another way of doing it and I could press the head of water cooler directly down onto it, instead of just smearing it all over the place.

 

So now I'm pretty stable running 1.31 V with a multiplier of 45 on all cores. During max load the temperatures rises to 80 degrees. And If my girlfriend could turn down the thermostat, it would probably be less. Still working on 4,6 ghz though.

Cooler Master IC Essential E1 paste.

 

I've been using this since I build my rig, so no new thermal paste. The last time I applied was in the summer, but I suspect it was pretty bad. I difficult to mount the head of the water cooler onto the CPU and at the same time connect/hold the clamp on the other side of the motherboard. This time I found another way of doing it and I could press the head of water cooler directly down onto it, instead of just smearing it all over the place.

 

So now I'm pretty stable running 1.31 V with a multiplier of 45 on all cores. During max load the temperatures rises to 80 degrees. And If my girlfriend could turn down the thermostat, it would probably be less. Still working on 4,6 ghz though.

Ok, thanks.

 

Might be time to upgrade that H60 cooler?

 

gb.

I have mine running at 4.7ghz. If I run it in prime it will crash after a few minutes, but running it in fsx and other games is not an issue, and I fly for hrs. Try it and see. Also remember that no game or app will ever stress the cpu the way prime does

I have mine running at 4.7ghz. If I run it in prime it will crash after a few minutes, but running it in fsx and other games is not an issue, and I fly for hrs. Try it and see. Also remember that no game or app will ever stress the cpu the way prime does

 

I thought about that, but I prefer a pretty solid and stable overclock even though I only get around 50 degrees during FSX max load.

My experience is with the Ivy Bridge (which runs hot). You really ought to be using an offset overclock and not a fixed (it sounds like that's what you're doing). At 4.7ghz, my vcore never goes above 1.29. Also, keep in mind that the TJMax (not the department store) for Haswell is 100*C (105 for Ivy Bridge) so as long as you don't hit that, the CPU won't throttle itself.

 

Also, think about buying another fan for the H60 and run it in push/pull, through the radiator, and out the back of the computer case. I use the H55 and adding the second fan (I replaced both with a couple of cougars) and saw the load temp drop by maybe 5-6*C.

 

And it is admirable to get a stable overclock. While LLC will mitigate voltage drops to some extent, you never want a freeze or something during a flight...

My experience is with the Ivy Bridge (which runs hot). You really ought to be using an offset overclock and not a fixed (it sounds like that's what you're doing). At 4.7ghz, my vcore never goes above 1.29. Also, keep in mind that the TJMax (not the department store) for Haswell is 100*C (105 for Ivy Bridge) so as long as you don't hit that, the CPU won't throttle itself.

 

Also, think about buying another fan for the H60 and run it in push/pull, through the radiator, and out the back of the computer case. I use the H55 and adding the second fan (I replaced both with a couple of cougars) and saw the load temp drop by maybe 5-6*C.

 

And it is admirable to get a stable overclock. While LLC will mitigate voltage drops to some extent, you never want a freeze or something during a flight...

 

Excactly, that whats happened during my previous non-stable overclocks. I'm going to play a little with the offset volt then. Thanks for the tip!

Do not use AVX instructions. It skyrockets the temps, loading the cpu up in ways your cpu wil ever encounter. Very few programs use that instruction set. This mainly applies to Ivy Bridge and up.

Do not use AVX instructions. It skyrockets the temps, loading the cpu up in ways your cpu wil ever encounter. Very few programs use that instruction set. This mainly applies to Ivy Bridge and up.

 

I think Prime95 uses AVX, right? What type of stress-testing do you suggest then?

I have mine running at 4.7ghz. If I run it in prime it will crash after a few minutes, but running it in fsx and other games is not an issue, and I fly for hrs. Try it and see. Also remember that no game or app will ever stress the cpu the way prime does

 

+1

 

I have a H70 running 100% stable in P3D and FSX (+14 hours in the PMDG 777) at 4,7GHZ at 1.245V and about 60-70c. No issues what so ever

 

Prime95 would crash but i am not interested in Prime95 :-) but FSX and P3D  B)

 

Michael Moe

I think Prime95 uses AVX, right? What type of stress-testing do you suggest then?

 

Intel XTU

 

http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-boards-software-extreme-tuning-utility.html