Forum Thread

Underclocking a fx-6300 hex core?

gonepostl 4,117 338 November 18, 2013 at 11:53 AM
I'm doing pretty good overclocking. I'm not sure if it's possible to damage a cpu by underclocking it, if so. Should I just do overclocking in reverse basically? HOw would I ruin my cpu by underclocking? What steps should I take. I'm trying to save energy when my cpu isn't in demand, which is most of the time. HELP.bounce

I took the liberty of posting the spec sheet

http://www.cpu-world.com/CPUs/Bul...-6300.html

Edit: After looking at the spec sheet I notice this.

Low power P states [1] #1: 3000 MHz, 1.225V
#2: 2500 MHz, 1.125V
#3: 2000 MHz, 1.025V
#4: 1400 MHz, 0.9V

I've ruined 2 cpu's due to overclocking, and not asking questions. Seeing the spec sheet I should be able to underclock it to 1400 mhz at .9v?

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#2
Quote from gonepostl View Post :
I'm doing pretty good overclocking. I'm not sure if it's possible to damage a cpu by underclocking it, if so. Should I just do overclocking in reverse basically? HOw would I ruin my cpu by underclocking? What steps should I take. I'm trying to save energy when my cpu isn't in demand, which is most of the time. HELP.bounce

I took the liberty of posting the spec sheet

http://www.cpu-world.com/CPUs/Bul...-6300.html
I believe when the CPU is not being used it already lowers it's own clock speed by itself. If you lowered the speed and memory timings you could potentially save $$ but the real question is how much. I'm thinking you'd be talking about change rather than dollars in the end.

The 6 and 8 core cpu's tend to focus on 4 or 3 or 2 (I think it's half) cores when idle for lower tasks. The AMD Phenom X6 that I had (six core like yours) would use only 4 or 3 cores at a higher speed (the turbo boost) if the 6 were un-necessary. How exactly it deems it un-necessary I don't know. You can install a program like cpuz and it'll actually show you the clock speed at idle. It's never running at the full blown advertised speed while idle.

Just to give you an example, my laptop is an AMD A8-4500M quad core processor. Each core runs at 1.9GHz. The turbo boost feature turns off 2 cores and makes the other 2 run up to 2.8Ghz if all of the cores are not necessary for the tasks at hand (has to do with the way software is written as well).

As you can see in this image, for what I am doing currently, it's turned off 2 cores and running the other 2 at around 2.3GHz.


Yours is:
Six-Core FX-6300 Operating Frequency 3.5GHz (4.1GHz Turbo)

The turbo is probably running 4.1GHz on 2 or 3 cores (I believe it's half). So you can look at it like, it's using more power for less cores which is probably using less power overall. OC is totally un-necessary in my opinion unless you really need the extra boost. Based on what I've already tried and succeeded with, in my own personal opinion, I'll never overclock without Liquid Cooling.

I am now running the AMD A10 6800K Quad instead of the Phenom X6 and holy hell with the higher speed memory the graphics are incredible.
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Last edited by Aitrus November 18, 2013 at 12:07 PM
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#3
I left something important out. In the bios when you OC (if you're using the BIOS) there is an option (usually called AMD Cool & Quiet) that can be turned on or off (The name of it may differ depending on your particular motherboard) and most OC walkthroughs (if you used one) will have you turn off the Turbo boost feature (so that your OC does set your CPU high, then the turbo boost comes on and pushes it even higher) and the other setting which allows the CPU to dynamically adjust per tasks when idle and/or not (Cool and quiet).

When you manually Overclock with this option off, it will set your CPU at your OC speed and it will run at that speed idle or not which in turn would up your energy costs and the wear of the CPU.
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Last edited by Aitrus November 18, 2013 at 01:55 PM
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#4
reduce voltage
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#5
Quote from Aitrus View Post :
I believe when the CPU is not being used it already lowers it's own clock speed by itself. If you lowered the speed and memory timings you could potentially save $$ but the real question is how much. I'm thinking you'd be talking about change rather than dollars in the end.

The 6 and 8 core cpu's tend to focus on 4 or 3 or 2 (I think it's half) cores when idle for lower tasks. The AMD Phenom X6 that I had (six core like yours) would use only 4 or 3 cores at a higher speed (the turbo boost) if the 6 were un-necessary. How exactly it deems it un-necessary I don't know. You can install a program like cpuz and it'll actually show you the clock speed at idle. It's never running at the full blown advertised speed while idle.

Just to give you an example, my laptop is an AMD A8-4500M quad core processor. Each core runs at 1.9GHz. The turbo boost feature turns off 2 cores and makes the other 2 run up to 2.8Ghz if all of the cores are not necessary for the tasks at hand (has to do with the way software is written as well).

As you can see in this image, for what I am doing currently, it's turned off 2 cores and running the other 2 at around 2.3GHz.


Yours is:
Six-Core FX-6300 Operating Frequency 3.5GHz (4.1GHz Turbo)

The turbo is probably running 4.1GHz on 2 or 3 cores (I believe it's half). So you can look at it like, it's using more power for less cores which is probably using less power overall. OC is totally un-necessary in my opinion unless you really need the extra boost. Based on what I've already tried and succeeded with, in my own personal opinion, I'll never overclock without Liquid Cooling.

I am now running the AMD A10 6800K Quad instead of the Phenom X6 and holy hell with the higher speed memory the graphics are incredible.
CPU is now overclocked. I haz liquid cooling on the cpu and is overclocked from 3.8 ghz to 4.7 stable!bouncebounceWink
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#6
the voltage is what will reduce the power consumption.. I would just set it to stock and enable the power-saving features you probably turned off while OCing
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#7
If you haven't already, I would suggest to buy a Kill-a-Watt to get a good handle on actual power consumption during idle and usage.

Cool'n'Quiet is pretty effective, so your computer may already do what you think it should be doing (if C'n'C is turned on!). Clocking back to stock and reducing voltages will help to limit the power consumption both during idle and blast, but going down further might only incrementally improve things.
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Last edited by Wasser November 22, 2013 at 12:34 PM
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#8
try K10stat http://sites.google.com/site/k10stat/

here's a good tutorial,
aspiregemstone.blogspot.com/2009/06/k10stat-amd-griffin-processor.html

~~~~~~~and here's my setting, if you have the time to read more~~~~~~~~
my cpu's max is 3Ghz, but the attachment screenshot showing 1800, because i changed it to 1.8Ghz max, i don't want it to go higher, and i changed the profile name as the max speed 1800, i made another profile for 3000, so if i want full speed, i just change profile.

i don't use task scheduler, so i just put a shortcut to startup.

here's my parameters for the shortcut, Load profile 1, ClockControl 1(Independent each core), Stay on tray, no window)
"C:\Program Files\K10Stats\K10STAT.exe" -lp:1 -ClkCtrl:1 -StayOnTray -nw

maybe you need to choose the power setting to high performance, or cool&quiet may override K10stat

some of the P-State does't work, if the ”info“ doesn't showing the correct speed, then it doesn't work, even when you manually lock it to that speed.

that tutorial said "DID" is P-State seems wrong to me, it's just for devide, when DID=0 means devide by 1(no devide), DID=1 devide 2

don't use first profile for testing limit, so it won't hang at start up if you auto load that profile and saved a wrong voltage, suggust you manually lock to that P-State for testing

maybe your CPU's Lowest isn't 1.4ghz, mine isn't locked the lowest (but locked the max), i tested it can go to 100Mhz (just for testing, too slow to be useful)
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Last edited by Left4Deal November 22, 2013 at 07:59 AM
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