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Asrock FM2A85X-ITX - the ultimate FM2 ITX mobo to lust for? - Page 13

post #121 of 213
nice power design on that gb, but the dimm and sata port positions are a huge no go for me..
post #122 of 213
Thread Starter 
Quote:
Originally Posted by mika91 View Post

Hi,

I'm just considering to replace my Gigabyte A85xm-D3H with this asrock itx board.
The gigabyte board don't allow bios undervolting, but I need it to get decent temperatures with my A10-5700. (I have a fanless heatpipe HFX case)

I downloaded FM2A85X manual, but don't find answers to all my questions:
  1. Does the bios allow undervolting? (cpu & nb core)
  2. Does asrock fan control allow to completly poweroff a pwm fan? I need to keep it off unless system reach a maximum temperature (for safety purpose)
  3. Any good ram sticks @ 2133Mhz with lowest possible voltage?
  4. Single or dual channels? (important for games?) 4Go ram is enough?

Thanks


I will try to answer from my own experience with the Asrock FM2A85X-ITX.

You can overvolt/undervolt, do Offset voltage settings and it comes with LLC options too.

Always use dual channels if possible and with RAM prices being still reasonable, no reason not to go to at least 2 x 4GB.

HTH
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post #123 of 213
Quote:
Originally Posted by akromatic View Post

do run some monitoring program or cpuz in windows or what not to see if it would automatically clock down to 1.6ghz and 0.9v. sometimes its the OS not having the correct power saving state to instruct the CPU to clock down when not needed
Quote:
Originally Posted by ravennevar View Post

I will install Windows 7 and see what kind of power consumption I get and if the APU clocks down. One thing I have noticed so far is that the system uses less power when in OpenELEC vs. UEFI. In addition, when playing a movie in OpenELEC power consumption drops even more to ~45w (I saw it hit the upper 30s a few times). Also, I am replacing the PSU as the one they shipped was dented (someone dropped it) and it does make strange noises.

Just wanted to follow up regarding my testing. It's going slow as I've been busy and it does not look encouraging. So far I have tested various NAS software as well as Win7, Win8, and Windows Storage Server 2012. This consisted of the system with just the main HDD running. I'm just trying to get a feel of what a baseline power consumption would be. With Win7 the system was idling at ~34w. Win8 further reduced that to ~27w and Storage Server managed to get it to ~26. Now, it's a different story with the open source NAS software. OpenMediaVault and NAS4Free idled at ~45, while FreeNAS idled ~73w.

As you can see there is a huge difference in power consumption between platforms, with Win pretty much taking advantage of all the power saving features of the A85X chipset. When trying to enable power management features in NAS4Free and FreeNAS, the system was not able to set the desired CPU state. I still need to run some tests switching some things around in the BIOS (underclocking, etc) to see if this helps with the NAS software, which I would prefer over the Windows Storage Server offering mainly because of the lack platform of drivers for the latter.

Also, voltage and frequency in all 3 Win setups never went below 1.072v and 1400MHz respectively.

Will keep you guys posted.
Edited by ravennevar - 2/21/13 at 9:53pm
post #124 of 213
probly as i've guessed, the system is properly clocking down according to power states however it is your OS not sending the correct power state to the board/cpu for it to clock down.

what you can do at the expense of performance is forcing it to 0.9v and 1.6ghz so that it will never go above that speed. if its a pure file server then 1.6ghz is plenty though it is abit waste of the chip
post #125 of 213
Quote:
Originally Posted by akromatic View Post

probly as i've guessed, the system is properly clocking down according to power states however it is your OS not sending the correct power state to the board/cpu for it to clock down.

what you can do at the expense of performance is forcing it to 0.9v and 1.6ghz so that it will never go above that speed. if its a pure file server then 1.6ghz is plenty though it is abit waste of the chip

I would like to try this, but I can't find the place in my BIOS to enter the voltage directly. My ASUS BIOS just has an "Offset mode" for those settings and the manual option is not available in that menu. I called ASUS and it was like talking to a WalMart greeter about the MB, voltages, etc. They said they would call back. I am beginning to wonder if I may need to ask someone who already owns the Asrock FM2 ITX to check power consumption under NAS4Free, FreeNAS, and/or OpenMediaVault.

Will keep trying.
post #126 of 213
Hi,

What is the best way to undervolt the CPU?
I'd like to keep minimum consumption for both idle & load states.

If I set CPU ore voltage, it's only for full load right?
and what CPU offset voltage do? (only positive offset ???)

Thanks
post #127 of 213
Thread Starter 
Ah khoo's experience (*pic heavy)
iTX-ing FM2 with ASRock FM2A85X-ITX
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IntelSSD Pioneer | Samsung NiCu Heatkiller 3.0 | 655 | MicroRes | GTX360 Win7 x64 
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post #128 of 213
I tried to reduce CPU voltage, but no effect on idle. It remains at 0.908V whatever I do with Asrock Extreme tuner software.
sadsmiley.gif
post #129 of 213
Which one do you think is better? The MSI FM2-A75IA-E53 or the AsRock FM2A85X-ITX?

tomorrow i'll receive the MSI but I can return it and buy the Asrock if it's worth
Edited by Anthon - 2/25/13 at 12:10pm
post #130 of 213
Quote:
Originally Posted by Anthon View Post

Which one do you think is better? The MSI FM2-A75IA-E53 or the AsRock FM2A85X-ITX?

tomorrow i'll receive the MSI but I can return it and buy the Asrock if it's worth

I would say the Asrock if you want to over/underclock. If you like the wireless features of the MSI, keep it.
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