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Thread: Killer Trinity - top A10-5800k - confirmed 5.1GHz on air and 7.3GHz on LN2

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  1. #1
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    What's this external pII you refer to? Tried looking it up but googling that didn't have the results I was hoping for.
    What cooler are you using for that 4.7? i may have missed that.

  2. #2
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    Quote Originally Posted by Oese View Post
    What is the second VR? Is it the IMC/GPU? It goes up just as much as the CPU vr in max power from 3.8 to 4.6

    The increase in CPU power is quite modest, 37% compared to 20% more clock+some volts.

    But the IMC/GPU (in Prime??) adds another 30 watts and thats where it becomes bad i think...
    The lower reading is UNB power consumption.

    When there is no actual video decoding task or 3D application running, the UNB (CNB+GNB) is usually consuming less than 9W.
    The GNB is also very intelligent; when there is no GPU processing power required the SCLK will be clocked down to 304MHz (instead of 800MHz) and the SIMDs/RBs will be downcored to preserve power.

    During CPU & CNB/IMC intensive tests the UNB power consumption never exceeded 9W.
    Sometimes when there is alot of display activity the GNB will request a PState change which makes the voltage jump to 3D level, however these situations only last 1-2 seconds usually.

    Under 9W power consumption is nothing short of impressive since the CNB part of the current FX CPUs is rated to ~15W.
    FXs do have L3 cache, however I would imagine a GNB would consume more power than that.

    The UNB power consumption peaks at 33W when the GNB is tortured in the similar manner as the CPU was (e.g. OpenCL computing).

    Quote Originally Posted by Yeroon View Post
    What's this external pII you refer to? Tried looking it up but googling that didn't have the results I was hoping for.
    What cooler are you using for that 4.7? i may have missed that.
    There is an internal Pll inside the FCH which can be used to generate the BCLK frequency. The high-end FM2 motherboards have an external Pll which is usually used instead. While the internal Pll is "ok", it is has more limited adjustments and features than the external Plls and it is not as accurate.
    The internal Pll can generate "exact" (.0MHz) frequencies with 4MHz intervals only, while the external Plls are always 100% precise.

    Gigabyte F2A85X-UP4 uses the internal Pll for BCLK frequencies below 136MHz and the external one for anything beyond that.

    Asus boards never use the internal Pll.

    I´m using Thermalright Ultra 120 Extreme heatsink with a single Enermax Magma 120 fan.
    Last edited by The Stilt; 10-04-2012 at 12:52 PM.

  3. #3
    Registered User superpyton's Avatar
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    Quote Originally Posted by The Stilt View Post
    There is an internal Pll inside the FCH which can be used to generate the BCLK frequency. The high-end FM2 motherboards have an external Pll which is usually used instead. While the internal Pll is "ok", it is has more limited adjustments and features than the external Plls and it is not as accurate.
    The internal Pll can generate "exact" (.0MHz) frequencies with 4MHz intervals only, while the external Plls are always 100% precise.

    Gigabyte F2A85X-UP4 uses the internal Pll for BCLK frequencies below 136MHz and the external one for anything beyond that.

    Asus boards never use the internal Pll.
    And how about ASRock and MSI FM2 boards?
    Xeon X3440 @ 3,6 GHz 1,275 V ::: Zalman CNPS10X Performa ::: ASRock P55 Pro/USB3 ::: Transcend 8 GB @ 1890 MHz 9-11-9-27 1T 1,64 V ::: Vertex HD5770 1 GB DDR5 ::: AC Accelero L2 PRO ::: Crucial C300 64 GB ::: WD6400AAKS 640 GB ::: ASUS Xonar DX ::: Edifier S330D ::: Silver Power SP-SS400 ::: Antec 300

  4. #4
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    Quote Originally Posted by superpyton View Post
    And how about ASRock and MSI FM2 boards?
    Asrock FM2A75 Pro4-M is pretty close to Asus F2A85-M Pro, however the production version is lacking the external Pll.
    MSI FM2-A75MA-E35 has an external Pll, however the VRM is only 3+2 phase without any cooling.

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