Maximus VII Ranger + i7 4790K

[boeingaviation]

So as the topic suggests I've upgrade from my old i7 2600k to Devils Canyon.

I've updates the BIOS to latest version but have some questions.

1) When I first booted my pc after picking it up from shop everything was set to auto in BIOS and target CPU frequency was 4ghz and memory speed 1300mhz I think. I have DDR3 1600 8GB.
2) The CPU would not idle lower than 4ghz as my windows 7 power setting was still set to high performance from my old system and it wasn't until I get this to Balanced that CPU dropped back to 800mhz -2000mhz depending on load and then boosted to 4ghz under load.
3) With my old chip I could just set the max turbo frequency but there's no setting like that in BIOS I can only select the cpu speed by selecting manual of XMP and I set 44 on all cores and left voltage on auto.

I ran a stress test using AIDA64 for 1 hour and maximum temp was 70 on one core.

I then thought I'd see what it was like at 4.6ghz and it bumped the volts to 1.323 and hit max 81 on core 2 but then I went back into BIOS and changedvoltage from auto to manual and set 1.26 and ran that for 1hour and my temps dropped to max 72 on one core.

So I would like to know how do I set the max turbo speed or is that the section below where you select your overclocking from auto to manual or XMP and then put in the CPU core as 44 and sync to all cores and should I leave the volts as auto or change them lower manually as 70degrees seem hot for a stock turbo speed and I'm using a corsair H80i liquid cooler.

Just after some advice please on what I should be doing or what I'm doing wrong as on my old chip I just set max turbo frequency to what I wanted and left volts normal and on a stress test it was cooler than devils canyon.

Thanks in advance for you help I'm a bit of a newbie.

Chris

[Arne_Saknussemm]

Hi boeingaviation 🙂

1333 is the default RAM frequency...to get your RAM to rated speeds you'd have to set XMP

High performance power plan can be edited to allow speedstep to work....change "minimum processor state" to 10% for example

Speedstep will not work if you set a manual voltage.

Yes, max frequency (turbo) is that field...sync all cores and set multiplier...

Best to use manual voltage to find a stable voltage for any OC....Auto invariably uses too much. Then with this stable voltage set up an offset or adaptive voltage to benefit from lower voltage and speedstep...

[boeingaviation]

Where do I set the minimum processor state to 10% on the high performance plan?

[Arne_Saknussemm]

[boeingaviation]

Thanks for that I will change it.

What does the 10% mean as I would still like my CPU to downclock to 800mhz when not under load.

Also leaving the voltage at auto and setting CPU speed to 44 bumps the voltage up to much as max temp under a stress test got to 75c which is too hot.

Can I manually set the voltage somehow to say 1.10v but still have the volts drop back when CPU not under load eg can I set the voltage at any point when I overclock but still have the volts drop back to idle volts and not stay at 1.10v.

[boeingaviation]

I don't suppose that my high temperature reading would be a result of me not reinstalling windows after the upgrade and just removing my old chipset and motherboard drives manually from add/remove programs and then putting the Vii ranger disk in and installing new drivers could that cause a conflict coz if so I'll reinstall windows.

[Nate152]

Hello boeingaviation

If you want your cpu voltage to drop when at idle you will have to use adaptive or offset mode, the windows power plan has to be set to balanced also.

Temps of 75c when stress testing is perfectly fine.

[boeingaviation]

When I stress tested at 4.6ghz I got a max temp of 81c when using auto voltage which set the volts to 1.32 but when I manually set the voltage in the BIOS I was able to set it to 1.26volts and max temp was 72 on one core at 4.6ghz.

Can you please explain how I use offet and adaptive mode I'm quite new to this as before with my old CPU I just left volts on auto so I don't know quite how to use adaptive and offset and which one is better? From my brief understanding offset - will minus voltage off the set volts (I don't know if you set a specific voltage with offset) and the opposite for offset + where it will add to your set voltage......is this correct and is that how adaptive works also?

[Arne_Saknussemm]

The processor asks for a range of voltage from idle to load...the so called VID. Offset applies the offset positive or negative across this whole range the whole VID table. Adaptive applies the value you set to the turbo range only, not the bottom end.

I would use adaptive. There are plenty of guides about on this forum

As I said manual voltage will not let you use speedstep...but once you have worked out your stable manual voltage for whatever OC you want/can achieve...use this value to set Adaptive, lets say and then you will have your max voltage at load and be able to use speedstep.