Power Consumption

Power consumption was tested on the system as a whole with a wall meter connected to the OCZ 1250W power supply, while in a dual 7970 GPU configuration.  This power supply is Gold rated, and as I am in the UK on a 230-240 V supply, leads to ~75% efficiency > 50W, and 90%+ efficiency at 250W, which is suitable for both idle and multi-GPU loading.  This method of power reading allows us to compare the power management of the UEFI and the board to supply components with power under load, and includes typical PSU losses due to efficiency.  These are the real world values that consumers may expect from a typical system (minus the monitor) using this motherboard.

Power Consumption (Idle) - Two 7970s

Power Consumption (Video) - Two 7970s

Power Consumption (Metro2033) - Two 7970s

Power Consumption (OCCT) - Two 7970s

Perhaps the alarming graph of these is the power draw under video performance.  It seems that certain motherboard BIOSes consider it a more intensive task, waking up more of the processor (or GPU) to compensate. At load however, we see the MSI and the ASRock boards drawing less power overall.

Boot Times

Different motherboards have different POST sequences before an operating system is initialized.  A lot of this is dependent on the board itself, and POST boot time is determined by the controllers on board (and the sequence of how those extras are organized).  As part of our testing, we are now going to look at the POST Boot Time - this is the time from pressing the ON button on the computer to when Windows starts loading. (We discount Windows loading as it is highly variable given Windows specific features.)  These results are subject to human error, so please allow +/- 1 second in these results.

POST (Power-On Self-Test) Time

With a lot more controllers to initialise on board, the ASUS P8Z77-V Pro requires at default 20.47 seconds to reach the windows loading screen.  By disabling controllers that aren't used, a time more like the ASRock could be achieved.  There is direct correlation between functionality and POST time.

Overclocking

Here at AnandTech we want to provide quick and easy ways to determine if a board is good for you (with in-depth analysis of course).  So here is a quick round up of our overclocking results.  Overclocks are tested for stability with PovRay and OCCT - while these may not be the most strenuous of stability tests, it does offer a quick check for memory errors under high load (and also balances testing time with getting the next board on for review!).

  CPU Speed
(MHz)
Voltage
(Volts)
PovRay Peak
Temp (ºC)
OCCT Peak
Temp (ºC)
Notes
ASRock
Z77 Extreme4
4700 1.175 86 86 LLC Level 1
ASUS
P8Z77-V Pro
4700 1.200 83 86 PLL Overvoltage enabled
Gigabyte
Z77X-UD3H
4700 1.200 82 86 LLC Extreme
MSI
Z77A-GD65
4700 1.250 90 - PLL Overvoltage enabled

 

Test Setup System Benchmarks
Comments Locked

117 Comments

View All Comments

  • ggathagan - Thursday, May 10, 2012 - link

    Yeah, we got your rant the 1st time around and didn't care about it then, either.
  • JSt0rm01 - Thursday, May 10, 2012 - link

    If you don't have anything to add to the conversation then maybe you should stfu. Its a perfectly fine place to discuss the slowing release schedules of desktop hardware and I don't think you, as a random internet name, are in any position to say what others care or don't care about. You aren't special.

    -------------
    Also, after being a member of the anandtech forums for 10 years I was permanently banned by the moderators there because they wanted to censor a website (ffdt.info) that had conversation that was critical of their moderation. I find that the free flow of all information on the internet is critical. For a tech website such as this to limit the flow of information is offensive the core of these beliefs and its all because certain people in positions of illusory power deem that information detrimental to their positions.
  • bji - Thursday, May 10, 2012 - link

    I think he was referring to the 'signature' that you are putting after every post. You know, the stuff after the dashes. With all respect, if you are going to put that in every post you're going to have to expect some flak from people who don't like when others try to make a statement. Not saying that I have a problem with it, but there are people who get pissed off about every little thing ...
  • JSt0rm01 - Thursday, May 10, 2012 - link

    well then let him be pissed. Thats my sig and if he wants to see it less then he shouldnt be responding to me.

    -------------
    Also, after being a member of the anandtech forums for 10 years I was permanently banned by the moderators there because they wanted to censor a website (ffdt.info) that had conversation that was critical of their moderation. I find that the free flow of all information on the internet is critical. For a tech website such as this to limit the flow of information is offensive the core of these beliefs and its all because certain people in positions of illusory power deem that information detrimental to their positions.
  • Paapaa125 - Friday, May 11, 2012 - link

    I don't understand why this site even accepts such a long sig. Stupid.
  • smalM - Tuesday, May 8, 2012 - link

    Black connectors on black boards - I really hate it.
    Where are the boards for grown-ups?
  • TGressus - Tuesday, May 8, 2012 - link

    Not black enough if you ask me. Caps could be all Hi-c, silk screening ever single component should just stop, the branding could be black and UV reactive.

    Worst is all that silver metal that connects the chips/sockets. Black that!
  • embeddedbill - Tuesday, May 8, 2012 - link

    Thunderbolt is curiously missing, more than a year after the apple intro. Some compelling features if price and vendor support don't drive you mad. Time can solve both those problems, I'm just not sure how flexible the implementation will be in a Windows environment, i.e. hot plug of performance hardware, and discrete video card integration of its display port out with the TB pcie lanes.

    Scarce details exist which makes me wonder if this tech will eventually wind up as overpriced fringe apple only, read FireWire!
  • kenyee - Tuesday, May 8, 2012 - link

    Probably something a bit too bleeding edge for you guys, but Gigabyte has apparently figured out how to make it painless for setting up a Hackintosh w/ their UEFI BIOS:
    http://teksyndicate.com/news/2012/04/24/best-mothe...
  • Zoomer - Tuesday, May 15, 2012 - link

    Hmm, that might be the reason for their weird phy choices.

Log in

Don't have an account? Sign up now