C6 State. How much does it save on AMD?

Joni · 04-21-12, 11:42 AM

Anyone ever measured the power consumption on idle with C6 off and on? I tried to find some information about this but not any tests with FX or Phenom. Anyone have a Watt-O-Meter?

Nick2bad4u · 04-23-12, 01:13 PM

I'd be interested in seeing those results as well.

Joni · 04-25-12, 10:17 AM

I bought a meter, I'll try it later today.

TsunamiJuan · 04-25-12, 11:26 AM

For chips like amd's fusion lineup it makes a decent difference allowing you to run most of the time around 30 watts while doing stuff vs 70watts with c6 off. That is assuming your running a small load like web browsing or watching movies. Something thats really only touching 1 core or so.

You'll notice it doing quite a bit on Intel Xeon's aswell. They've had very very aggressive power profiling for quite a while now.

Joni · 04-25-12, 11:28 AM

On default power settings idle was about 98W (1400 MHz), with C6 state disabled from BIOS idle was about 117W (4000 MHz). On both cases full load on Prime95 was about 260W.

I had Turbo disabled, clocked to 4000 GHz with default voltages.

So it's not a big sin to keep C6 disabled, especially if you get some coil whine with C6 turned on.

EarthDog · 04-25-12, 11:58 AM

C6 is a sleep/idle state so in full load you will not see a difference.

Joni · 04-25-12, 02:59 PM

Yeah, I just added it to show how much it takes at 4.0 GHz vs idle.

04-21-12, 11:42 AM	Thread Starter #1
Joni Member Join Date: Mar 2012 Location: Finland	C6 State. How much does it save on AMD? Anyone ever measured the power consumption on idle with C6 off and on? I tried to find some information about this but not any tests with FX or Phenom. Anyone have a Watt-O-Meter? __________________ Sony Bravia 55XBR8/55X4500 Yamaha Piano Black NS-777/NS-555/NS-C444 AMD FX-8350 @ 4.4 GHz (1,356 V), Noctua NH-D14, Asus M5A99X EVO Sapphire HD 7750 Ultimate (Passive) Enermax Modu 82+ 525w (Modded 750rpm/8dB fan) Kingston HyperX 8GB 1866MHz DDR3 CL9 Windows 8 Pro with Media Center 64-bit Fractal Design Define R2 4 x Noiseblocker NB-MultiFrame S-series M12-S1 @ 750rpm 8 dB (Case 3 and PSU 1), 1 x Noctua NF-P14 @ 900rpm 10 dB (CPU) 128GB Samsung 840 Pro, 1TB Samsung SpinPoint F3, 2 x 2TB Western Digital Caviar Green, 1 x 1TB Western Digital Caviar Green
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04-23-12, 01:13 PM	#2
Nick2bad4u Registered Join Date: Sep 2008	I'd be interested in seeing those results as well. __________________ Mobo = Mis 870a-G54 Storage = 1 TB Total on Internal Hard drives and 120gb SSD Processor = FX-6100 Graphic Card = NVIDIA GeForce GTX 560 Ti Keyboard = Logitech G15 Mouse = Razer... id remember Mointor = Dual 26 inch and 19 inch Steam Id = Nick2bad4u Hit me up!
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04-25-12, 10:17 AM	Thread Starter #3
Joni Member Join Date: Mar 2012 Location: Finland	I bought a meter, I'll try it later today. __________________ Sony Bravia 55XBR8/55X4500 Yamaha Piano Black NS-777/NS-555/NS-C444 AMD FX-8350 @ 4.4 GHz (1,356 V), Noctua NH-D14, Asus M5A99X EVO Sapphire HD 7750 Ultimate (Passive) Enermax Modu 82+ 525w (Modded 750rpm/8dB fan) Kingston HyperX 8GB 1866MHz DDR3 CL9 Windows 8 Pro with Media Center 64-bit Fractal Design Define R2 4 x Noiseblocker NB-MultiFrame S-series M12-S1 @ 750rpm 8 dB (Case 3 and PSU 1), 1 x Noctua NF-P14 @ 900rpm 10 dB (CPU) 128GB Samsung 840 Pro, 1TB Samsung SpinPoint F3, 2 x 2TB Western Digital Caviar Green, 1 x 1TB Western Digital Caviar Green
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04-25-12, 11:26 AM	#4
TsunamiJuan Member Join Date: Mar 2011 Location: Soviet Mexico	For chips like amd's fusion lineup it makes a decent difference allowing you to run most of the time around 30 watts while doing stuff vs 70watts with c6 off. That is assuming your running a small load like web browsing or watching movies. Something thats really only touching 1 core or so. You'll notice it doing quite a bit on Intel Xeon's aswell. They've had very very aggressive power profiling for quite a while now. __________________ Get the hot dogs out, this baby's going up in Flames!!! Keeper Of The VaseAtone™ Bobnova: humans need SMART functionality Deanzo: Matts hat is too high a res for the video feed, that is the issue Currently Doing Stupid OC tricks with A10 5800k @ A85X chipset Asus M4N82 nforce980a mb, Phenom II 940 be @ 6000.1mhz (Bobnova'd) , 4gb DDR2 1066 Gigabyte a75-ud4h , 3870k @ 6016.7mhz, 2.358vcore Asus MIVE, i7 2600k @ 5899.7mhz Benching Rig RIP Died doing what it did best ASUS MIVE, i7 2600k @ 5.2ghz 1.49vcore, noctua NH-D14 2000 AMD e350 Cold Fusion - IceCream Special Ln2 Pot (the most fun you can have 130$ and ln2)
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04-25-12, 11:28 AM	Thread Starter #5
Joni Member Join Date: Mar 2012 Location: Finland	On default power settings idle was about 98W (1400 MHz), with C6 state disabled from BIOS idle was about 117W (4000 MHz). On both cases full load on Prime95 was about 260W. I had Turbo disabled, clocked to 4000 GHz with default voltages. So it's not a big sin to keep C6 disabled, especially if you get some coil whine with C6 turned on. __________________ Sony Bravia 55XBR8/55X4500 Yamaha Piano Black NS-777/NS-555/NS-C444 AMD FX-8350 @ 4.4 GHz (1,356 V), Noctua NH-D14, Asus M5A99X EVO Sapphire HD 7750 Ultimate (Passive) Enermax Modu 82+ 525w (Modded 750rpm/8dB fan) Kingston HyperX 8GB 1866MHz DDR3 CL9 Windows 8 Pro with Media Center 64-bit Fractal Design Define R2 4 x Noiseblocker NB-MultiFrame S-series M12-S1 @ 750rpm 8 dB (Case 3 and PSU 1), 1 x Noctua NF-P14 @ 900rpm 10 dB (CPU) 128GB Samsung 840 Pro, 1TB Samsung SpinPoint F3, 2 x 2TB Western Digital Caviar Green, 1 x 1TB Western Digital Caviar Green Last edited by Joni; 04-25-12 at 11:59 AM.
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04-25-12, 11:58 AM	#6
EarthDog Senior PITA Member Overclockers.com Editor Join Date: Dec 2008 Location: Stuck in Maryland...	C6 is a sleep/idle state so in full load you will not see a difference. __________________ Should I R0 my SSD? / SandyBridge / Ivybridge Overclocking Guide / AMD Overclocking Guide / Power Supply Guide SSD Reliability/Write Endurance / JOIN THE BENCHING TEAM! / Bulldozer Overclocking Guide / Forum Etiquette Want to see your writing featured on the overclockers.com Front Page? PM me, I can help! "We have more information and more ways of accessing it than ever, yet seem increasingly less inclined to do so."- Michael Wilbon
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04-25-12, 02:59 PM	Thread Starter #7
Joni Member Join Date: Mar 2012 Location: Finland	Yeah, I just added it to show how much it takes at 4.0 GHz vs idle. __________________ Sony Bravia 55XBR8/55X4500 Yamaha Piano Black NS-777/NS-555/NS-C444 AMD FX-8350 @ 4.4 GHz (1,356 V), Noctua NH-D14, Asus M5A99X EVO Sapphire HD 7750 Ultimate (Passive) Enermax Modu 82+ 525w (Modded 750rpm/8dB fan) Kingston HyperX 8GB 1866MHz DDR3 CL9 Windows 8 Pro with Media Center 64-bit Fractal Design Define R2 4 x Noiseblocker NB-MultiFrame S-series M12-S1 @ 750rpm 8 dB (Case 3 and PSU 1), 1 x Noctua NF-P14 @ 900rpm 10 dB (CPU) 128GB Samsung 840 Pro, 1TB Samsung SpinPoint F3, 2 x 2TB Western Digital Caviar Green, 1 x 1TB Western Digital Caviar Green
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