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post #7921 of 8112
Hey guys,

I down clocked my FX 6300 to 2.0 Ghz at v0.9 as my power are coming quite huge.

As I use X plane 10 with Linux LXDE (GUI) the system does even feel the load everything is smooth. I had tried at 4.4 Ghz in Windows 7 and that use to cry when loading X plane 10.

Yeah the load times are a bit slower but that's ok. Else i haven't noticed any drops in performance in Linux. I have a hackintosh and will also try it on that.
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post #7922 of 8112
Tjsaysrawr - Amd 8120 - Asus Crosshair v formula

http://valid.x86.fr/c24myh
post #7923 of 8112
Quote:
I down clocked my FX 6300 to 2.0 Ghz at v0.9 as my power are coming quite huge

Ummm, if you just enable CnC and C6 in bios and use offset voltages, youll be down to 1.6 ghz and .8v. Then when required, it will go up to your max overclock settings automatically. Simple and elegant, thumb.gif
    
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post #7924 of 8112
Quote:
Originally Posted by ironmaiden View Post

Hey guys,

I down clocked my FX 6300 to 2.0 Ghz at v0.9 as my power are coming quite huge.

As I use X plane 10 with Linux LXDE (GUI) the system does even feel the load everything is smooth. I had tried at 4.4 Ghz in Windows 7 and that use to cry when loading X plane 10.

Yeah the load times are a bit slower but that's ok. Else i haven't noticed any drops in performance in Linux. I have a hackintosh and will also try it on that.

Quote:
Originally Posted by cpmee View Post

Ummm, if you just enable CnC and C6 in bios and use offset voltages, youll be down to 1.6 ghz and .8v. Then when required, it will go up to your max overclock settings automatically. Simple and elegant, thumb.gif

Absolutely this.

Enable Cool 'n Quiet as soon as you can
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post #7925 of 8112
Upgraded from Phenom II x6 1055T to a FX 8350 last week.

Then I had a problem running Prime 95 - one or two cores fail within the few minutes after it start. Early on - I've suspected that the memory modules were the culprit, but as I've searched further on the internet - I found that I may be experiencing Voltage Drops or "Vdroop" on my motherboard(Gigabyte GA-970A-DS3P). I then bumped the CPU voltage in my motherboard with +0.050V. Prime 95 - ran without any hitches after that smile.gif

CPU-Z Validation

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post #7926 of 8112

Do you have apm turned off? if not when/if the CPU hits/exceeds 26.5 A on the 12v rail it will drop cores.

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post #7927 of 8112
Quote:
Originally Posted by cinnamoncider View Post

Upgraded from Phenom II x6 1055T to a FX 8350 last week.

Then I had a problem running Prime 95 - one or two cores fail within the few minutes after it start. Early on - I've suspected that the memory modules were the culprit, but as I've searched further on the internet - I found that I may be experiencing Voltage Drops or "Vdroop" on my motherboard(Gigabyte GA-970A-DS3P). I then bumped the CPU voltage in my motherboard with +0.050V. Prime 95 - ran without any hitches after that smile.gif

CPU-Z Validation


yea vdroop is a perfectly normal thing for computer hardware, usually its just a simple voltage drop caused by heavy processor load, if you have a bad PSU or a motherboard that wasn't exactly built for a high-power CPU it can become an apparent problem even on stock settings.

usually these newer boards (since AM3+ kinda needs it) have LLC regulation control you can override in the BIOS to help with overclocking, in your case you might just need to set it higher, crosshairV for example has this set to "high" by default which is pretty solid, ie; it counters 98% of the vdroop on stock settings, you have an 8350 so the setting should be something about the same for you too.
   
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post #7928 of 8112
I'm not sure about the APM settings in the BIOS but all of the settings are at stock - auto.
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post #7929 of 8112
Quote:
Originally Posted by Paul17041993 View Post

yea vdroop is a perfectly normal thing for computer hardware, usually its just a simple voltage drop caused by heavy processor load, if you have a bad PSU or a motherboard that wasn't exactly built for a high-power CPU it can become an apparent problem even on stock settings.

usually these newer boards (since AM3+ kinda needs it) have LLC regulation control you can override in the BIOS to help with overclocking, in your case you might just need to set it higher, crosshairV for example has this set to "high" by default which is pretty solid, ie; it counters 98% of the vdroop on stock settings, you have an 8350 so the setting should be something about the same for you too.
I have a Seasonic P760 as my PSU. The problem maybe be at my motherboard. But I have read threads that Sabertooth 990FX users experiences Vdroops too. I am not sure if a simple BIOS update from the manufacturer will solve this problem.

I kinda don't understand why voltage drops occur during heavy processing load - where the hardware needs more power for processing necessary activities. I have also noticed this voltage drops using HWmonitor - 1.4v under average use, and with Prime95 - it drops down to 1.2~1.3v.
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post #7930 of 8112
Quote:
Originally Posted by cinnamoncider View Post

I have a Seasonic P760 as my PSU. The problem maybe be at my motherboard. But I have read threads that Sabertooth 990FX users experiences Vdroops too. I am not sure if a simple BIOS update from the manufacturer will solve this problem.

I kinda don't understand why voltage drops occur during heavy processing load - where the hardware needs more power for processing necessary activities. I have also noticed this voltage drops using HWmonitor - 1.4v under average use, and with Prime95 - it drops down to 1.2~1.3v.

its a lot of electrical physics stuff, in basic explanation; when a processor is put under load doing some task, a lot of its logic gates (there's millions of them, its a logic processor) are cycling states in short time, whereas in idle they don't need to do anything. when a gate changes state it draws power to do so, effectively the potential resistance of the processor changes depending on what its doing, higher your clocks and load, the higher this decreases, and decreasing the resistance in a circuit increases the current flow, and the smaller the potential resistance of a circuit gets, the lower the potential difference (voltage) will get, to the point where you're effectively making a short circuit and the difference becomes 0 (and your PSU shuts off from both overcurrent and undervoltage).

in a nutshell; its just part of the laws of physics, its always there, its particularly a problem in computer hardware due to using such low voltages and high current, ~10% of the droop can be caused from the motherboard and socket alone, and its only in these newer PWM-based VRMs that the voltage can be accurately tuned as the processor gets put under stress, hence the appearance of LLC control (old analogue VRMs were just standard regulators and only had target voltage control, little-to-no possible vdroop countering).
   
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