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Help OC Phenom II
- Thread starter swampdonkey
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- Joined
- Dec 27, 2008
Please include a pic of CPU-z tab: "SPD" so we can compare your ram timings and frequency with what the manufacturer recommends. What is the make, model and wattage of your PSU? What is the make and model of your case? Have you done in temp monitoring under full load of Prime95 blend? You say nothing about temps which if too high can cause instability. It generally takes 1.5 vcore or maybe more to get a Deneb core CPU up past 4.0 ghz and you are only running a vcore of 1.465. Do you have temp room to increase the vcore?
Please run a 20f minute PRime95v blend test with HWMonitor open on the desktop before and during the test. Then attach a pic of the HWMonitor interface so we can take a look at temps and voltages under load. We don't need a pic of Prime95. We all know what it looks like. We do need pics of the three CPU-z tabs and of HWMonitor after a stress test.
Please run a 20f minute PRime95v blend test with HWMonitor open on the desktop before and during the test. Then attach a pic of the HWMonitor interface so we can take a look at temps and voltages under load. We don't need a pic of Prime95. We all know what it looks like. We do need pics of the three CPU-z tabs and of HWMonitor after a stress test.
Last edited:
- Joined
- Dec 30, 2011
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- Michigan Tech
^ All of that. Also have you tried using an odd cpu multiplier and overclocking the reference clock? Sometimes that can lead to more OC headroom.
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- Michigan Tech
At 42C your close to the 50C mark which is where most cpus stop clocking any higher. That could be a problem or you just need to lower NB and push more VCore for higher cpu speed.
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- Barberton, OH
Should be fine up to 60-65c. I dunno about most CPUs, regardless of what Dolk says with this mystical "heat wall", it is wrong. Some will become unstable around 50-55c and some will not. Some FX-8100 series CPUs will do the same at 60c and others will run all the way till 80.
Also every value but 533 CL7 in CPU-Z SPD tab is trash, they are not real readings and I don't know why we keep asking people to provide it instead of just looking at the sticker on the memory themselves. I've said this a hundred times, but apparently we trust a piece of software that knowingly reads false values vs someone's eyes and hands.
Also, if someone is stable at 4 GHz, when overclocking with only the multiplier, why are we asking about his memory timings? They obviously work.
swampdonkey, what kind of error or BSOD is Prime95 giving you?
Also every value but 533 CL7 in CPU-Z SPD tab is trash, they are not real readings and I don't know why we keep asking people to provide it instead of just looking at the sticker on the memory themselves. I've said this a hundred times, but apparently we trust a piece of software that knowingly reads false values vs someone's eyes and hands.
Also, if someone is stable at 4 GHz, when overclocking with only the multiplier, why are we asking about his memory timings? They obviously work.
swampdonkey, what kind of error or BSOD is Prime95 giving you?
Now comes the challenge of 4.2 
- Joined
- Apr 3, 2012
- Location
- Barberton, OH
Hello swampdonkey 
"CPU Voltage Frequency" adjusts the pulse-width modulation (PWM) switching frequency of the motherboard's voltage regulator module (VRM) connected to the CPU vcore.
This setting can usually be left on auto, but I find 400-450 KHz works well on ASUS boards.
In a nutshell, the goal of PWM switching frequency is so reduce unmeasureable voltage change in voltage when a load is supplied to the VRM.
Similar to:
Generally, higher switching frequencies will dampen this response of the circuit, but at the expense of lower power efficiency and more VRM heat.
However one large reason the option is there, to dampen transient overshoot (a split second rise in voltage before returning to normal, it is the peak of the graph) and ringing (the waves) when Load-Line Calibration is in use.
This is unmeasurable and really should not make a difference in reliability or overclocks in normal cases so it is best left 400-450 KHz. The only real people that take advantage of this VRM tweaking feature would be those extreme overclockers using exotic cooling methods, extreme LLC and dangerous voltages.
So...
No need to worry.
Oh.
I've noted up to 0.04v gain under load with CPU-NB on Crosshair V Formula with LLC just at Regular (lowest), so if ASUS provides CPU-NB Voltage monitoring within AI Suite II I would take a look at it and maybe adjust accordingly. If it is anything like the Crosshair board, CPU-NB LLC is not needed.
As far as CPU Current Capability and CPU-NB Current Capability, these are simply Over-Current Protection adjustments. If you aren't throttling (CPU is not downclocking to low clocks), or shutting down at random when under intensive CPU load, then these can be left alone, these options cater to extreme overclockers as well.
Hope that helps!
-BeepBeep
"CPU Voltage Frequency" adjusts the pulse-width modulation (PWM) switching frequency of the motherboard's voltage regulator module (VRM) connected to the CPU vcore.
This setting can usually be left on auto, but I find 400-450 KHz works well on ASUS boards.
In a nutshell, the goal of PWM switching frequency is so reduce unmeasureable voltage change in voltage when a load is supplied to the VRM.
Similar to:
Generally, higher switching frequencies will dampen this response of the circuit, but at the expense of lower power efficiency and more VRM heat.
However one large reason the option is there, to dampen transient overshoot (a split second rise in voltage before returning to normal, it is the peak of the graph) and ringing (the waves) when Load-Line Calibration is in use.
This is unmeasurable and really should not make a difference in reliability or overclocks in normal cases so it is best left 400-450 KHz. The only real people that take advantage of this VRM tweaking feature would be those extreme overclockers using exotic cooling methods, extreme LLC and dangerous voltages.
So...
No need to worry.
Oh.
I've noted up to 0.04v gain under load with CPU-NB on Crosshair V Formula with LLC just at Regular (lowest), so if ASUS provides CPU-NB Voltage monitoring within AI Suite II I would take a look at it and maybe adjust accordingly. If it is anything like the Crosshair board, CPU-NB LLC is not needed.
As far as CPU Current Capability and CPU-NB Current Capability, these are simply Over-Current Protection adjustments. If you aren't throttling (CPU is not downclocking to low clocks), or shutting down at random when under intensive CPU load, then these can be left alone, these options cater to extreme overclockers as well.
Hope that helps!
-BeepBeep
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