ASUS P8Z77-V Premium Overclocking

Note: Ivy Bridge does not overclock like Sandy Bridge.  For a detailed report on the effect of voltage on Ivy Bridge (and thus temperatures and power draw), please read Undervolting and Overclocking on Ivy Bridge.

Experience with ASUS P8Z77-V Premium

Overclocking with the P8Z77-V Premium was as straightforward as any other ASUS motherboard.  In terms of automatic overclocking, we have two options in AI Suite – Fast and Extreme.  The TPU switch and OC Tuner option in the BIOS both perform the ‘Fast’ option equivalent.  The Extreme setting performs automatic stress testing in order to raise both the multiplier of the CPU and the BCLK to get the best overclock based on cooling and environment.

Manual overclocking was a little mixed - the way that ASUS performs the overclock is to apply the settings after the POST, which means that a user is almost always guaranteed to get into the BIOS.  However, for the most part of our overclock testing, the system would go straight through into our testing, and would seem stable during the first couple of minutes in our testing before producing a memory error if the voltage is not sufficient.  Nonetheless, we did get a competitive result for our overclocking.

One note I should point out – after seven weeks of dull and dreary weather here in the UK, during testing of this motherboard we ended up with bright sunshine, causing ambient temperatures to raise from 15°C to 25°C, and humidity to also rise.  As a result, overclocking on this system hit its peak earlier than in other environments.  Unfortunately it is not common for residential properties in the UK to have air conditioning either, so we had to make do with an additional pair of powerful Delta fans to aid cooling.

Methodology:

Our standard overclocking methodology is as follows.  We select the automatic overclock options and test for stability with PovRay and OCCT to simulate high-end workloads.  These stability tests aim to catch any immediate causes for memory or CPU errors.

For manual overclocks, based on the information gathered from previous testing, starts off at a nominal voltage and CPU multiplier, and the multiplier is increased until the stability tests are failed.  The CPU voltage is increased gradually until the stability tests are passed, and the process repeated until the motherboard reduces the multiplier automatically (due to safety protocol) or the CPU temperature reaches a stupidly high level (100ºC+).

Our test bed is not in a case, which should push overclocks higher with fresher (cooler) air.  We also are using Intel's All-in-one Liquid Cooler with its stock fan.  This is a 120mm radiator liquid cooler, designed to mimic a medium-to-high end air cooler.

Automatic Overclock:

The two options for the automatic overclocking are found in AI Suite – either Fast, which applies a fixed overclock series of settings, or Extreme, which uses stress testing and sensors to find the best overclock with respect to the local environment.  Here are our results.

At the Fast setting, the CPU was raised to the 41x multiplier and 103 MHz BCLK, giving an overall overclock to 4223 MHz.  In the OS, this showed an OCCT load voltage of 1.128 volts, and peak temperatures during PovRay of 76°C and OCCT of 78°C.

At the Extreme setting, the CPU was raised to the 45x multiplier and 103 MHz BCLK, giving an overall overclock of 4635 MHz.  In the OS, this showed an OCCT load voltage of 1.296 volts, and peak temperatures during PovRay of 98°C and OCCT of 102°C.

Manual Overclock:

Manual overclocks were performed purely by entering the BIOS and adjusting values.  With the AI Overclock Tuner mode set to ‘Manual’, the main options being changed were the 1-core Ratio Limit and the CPU voltage set to a fixed value.  Load Line Calibrations were left on Automatic.  Here are our results.

Starting at the 44x multiplier and 1.100 volts set in the BIOS, the system showed an OCCT load voltage of 1.112 volts, and peak temperatures of 79°C during PovRay and 82° in  OCCT were observed.

At the 45x multiplier, the minimum voltage stable was 1.125 volts set in the BIOS, which showed an OCCT load voltage of 1.128 volts.  Peak temperatures of 80°C in PovRay and 82° in OCCT were observed.

At the 46x multiplier, the minimum voltage stable was 1.175 volts set in the BIOS, which showed an OCCT load voltage of 1.176 volts.  Peak temperatures of 85°C in PovRay and 88° in OCCT were observed.

At the 47x multiplier, the minimum voltage stable was 1.225 volts set in the BIOS, which showed an OCCT load voltage of 1.232 volts.  Peak temperatures of 93°C in PovRay and 96° in OCCT were observed.

At the 48x multiplier, a BIOS voltage of 1.275 volts was not stable in the OS, giving memory errors in PovRay and showing 98°C peak temperature during the initial PovRay running.

ASUS P8Z77-V Premium In The Box, Voltage Readings Test Setup, Power Consumption
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  • ASUSTechMKT - Tuesday, August 14, 2012 - link

    It offers considerably better performance first generation 9128 and 9120 and 9130 were not bad controller just limited in peak throughput but keep in mind the controller was put to market before Intel even had SATA6G PCH. Also keep in mind performance for real world usage ( boot time, application launch performance, copy performance is pretty similar between then it is only in benchmarks you will see a measurable difference. That being noted the x2 interconnect offers twice the throughput for considerably improved performance vs the x1 interconnect 9128 type solutions. This allows newer SATA6G drives to generally perform on about the same level as the Intel PCH ( peak performance being at / near or above 500MBs on fast controllers ). Additionally it has some specific advantages not noted in the review such as stacked SSD caching. This allows up to 3 SSDs to be stacked on a mechanical drive to continue to enhance its performance.

    Hope this clarifies it for you.
    Reply
  • infoilrator - Monday, August 13, 2012 - link

    On any top price product certain features are necessary, useful or not, on a "has" basis.
    Minor omissions (in the would be nice category) would be a card reader in the front USB3.0 Device, and a PCIe expansion card with 2 firewire and 2 USB2 or USB3 plugs.

    After all, too much is not enough, $450 should not require further shopping for minor add ins.
    The price, if you have full use for the "package" seems acceptable, not that I'll ever have it.
    Reply
  • TimoKyyro - Monday, August 13, 2012 - link

    I would have liked to see GPU rendering benchmarks with SmallLuxGPU or Blender. This board would be perfect for animation rendering with 2 x PCIe 3.0 x16 for dual GTX 690 or 4 x PCIe 3.0 x8 for quad GTX 680.

    The price doesn't matter if I get faster GPU rendering and better support for new technologies like PCIe 3.0 and Thunderbolt.
    Reply
  • IanCutress - Monday, August 13, 2012 - link

    Unfortunately I do not have access to those GPUs.

    Ian
    Reply
  • rahvin - Monday, August 13, 2012 - link

    Are the eSATA ports port multiplier capable? Reply
  • mayankleoboy1 - Monday, August 13, 2012 - link

    it would be great to see a PCIE3.0 SSD for tests and if it can take advantage of the extra bandwidth. Reply
  • DigitalFreak - Monday, August 13, 2012 - link

    There is no "extra bandwidth". You're still limited to the x16 connection to the CPU. Reply
  • jwcalla - Monday, August 13, 2012 - link

    $450???

    If you want to set yourself apart, how about supporting something useful like ECC RAM and 10 GbE?

    Until you can do ethernet over Thunderbolt, I don't really see the point of TB on a motherboard like this.

    And 10+ SATA ports... that would only be used in a file server context. But that requires ECC RAM. So it doesn't add up.

    JMO.
    Reply
  • jwcalla - Monday, August 13, 2012 - link

    * Ahh yes I forgot that desktop Intel chipsets don't support ECC RAM so they can charge more for their server-based motherboards and processors.

    Even Cortex A-15 supports ECC. *sigh*

    This space needs some serious competition. It's just the same boring features rehashed and multiplied.
    Reply
  • Kevin G - Monday, August 13, 2012 - link

    There are a few TB -> Ethernet solutions out there, including an adapter from Apple. Though with two NIC's on the board, I'm not really use-case scenario for TB on this particular motherboard. I can only fathom fast external storage and at that point the user would be better off with a solid SAS card with external connectivity.

    As for ECC, Intel does indeed limit their desktop processors. A handful of motherboards will support ECC if a socket 1155 Xeon is utilized. Though if ECC is critical, AMD's FX line supports ECC and up to the motherboard manufacturers to support it.
    Reply

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