Haswell Vcore

[tmw2442]

CPU: 4770K

MB: MAXIMUS VI HERO

 

I am having an issue with the vcore voltage on my motherboard.  I can set 1.15 volts vcore 4ghz cpu/ring boot and stress test in AIDA64(deselect stress fpu).  The CPU vcore holds solid at 1.15v and the cpu is stable.  Then set the vcore mode back adaptive and set 1.15v, stress test again in AIDA64 vcore 1.288 under load.  If I stress test with intel Extreme tuning software adaptive only goes to 1.21 under stress test, but 1.288 under benchmark.  Any suggestions

[Godlygamer23]

If I remember correctly, you're adding offset voltage with Adaptive, right? Or am I remembering wrong?

[tmw2442]

I guess my real question is how do I set up the bios to stay intel spec voltage then ramp up to only 1.15 vcore at a turbo freq of 4ghz

[Godlygamer23]

Do you have all power state options turned on? Including Speedstep, and all C states.

[winny3141]

Adaptive is great, because it gives the CPU the exact voltage it needs to run optimally. I would not fret over .6 Volts if that is what your motherboard feels your CPU needs to run optimally. You can set the CPU to manual voltage if you want, but that should NOT be your daily driver because of the fact that you are not going to take advantage of Haswell's power saving technology's. However, do NOT run intensive benchmarks with adaptive on. As I remember, Linus said in his Haswell Overclocking guide that giving more voltage to the CPU while running Prime95 can have the vcore rise a really high amount when your not intending to, having a likelihood of overpowering your cooling solution, and as a result damaging your cpu. DO NOT run intensive CPU benchmarks while in adaptive mode, only in Manual mode, when you are experimenting with overclocking.

 

Hope that helped.

 

- winny3141

[tmw2442]

Do you have all power state options turned on? Including Speedstep, and all C states.

yes

[tmw2442]

Adaptive is great, because it gives the CPU the exact voltage it needs to run optimally. I would not fret over .6 Volts if that is what your motherboard feels your CPU needs to run optimally. You can set the CPU to manual voltage if you want, but that should NOT be your daily driver because of the fact that you are not going to take advantage of Haswell's power saving technology's. However, do NOT run intensive benchmarks with adaptive on. As I remember, Linus said in his Haswell Overclocking guide that giving more voltage to the CPU while running Prime95 can have the vcore rise a really high amount when your not intending to, having a likelihood of overpowering your cooling solution, and as a result damaging your cpu. DO NOT run intensive CPU benchmarks while in adaptive mode, only in Manual mode, when you are experimenting with overclocking.

 

Hope that helped.

 

- winny3141

Its not a benchmark it is a stress test and as I remember correctly AIDA has been validated for haswell.  I have also turned the stress FPU part off in AIDA to keep the FIVR from adding the extra voltage

[CthulDude]

It's all synthetic stress tests that will cause an over volt in adaptive, some just seem to do it a lot worse. Find your stable overclock in manual and then switch it to adaptive with the same voltage and clocks.