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AMD AutoXpress

Discussão em 'Novidades Hardware PC' iniciada por Zarolho, 25 de Setembro de 2007. (Respostas: 3; Visualizações: 1230)

  1. Zarolho

    Zarolho Power Member

    We just got information that the new RD790, RD780 & RX780 chipsets will have a new option in BIOS that will allow to get a few extra performance. This is something like NVIDIA's LinkBoost feature but goes a step further in tweaking.

    Feature Options: ON (default) / OFF / Custom
    Upon selecting CUSTOM option - 3 options that have no submenus appear (the details listed below are hidden). These options only have two modes ON or OFF. Selecting ON selects ALL functions in that mode.
    • o CPU (ON default /OFF)
    • o XpressRoute (ON default/OFF)
    • o MemBoost (ON default/OFF)
    Sub Section Name: CPU (ON / OFF)
    • Function 1: To Maximize CPU performance
    • Detail: Change CPU ClkDivisor to “Divide-by-1” mode
    • Limitation: For Phenom (K10) CPU only
    Sub Section Name: XpressRoute (ON / OFF)
    • Function 1: To accelerate transfers of data to and from graphics
    • Detail: Increase PCIE clock for Graphic cards with certain device ids. Internal qualification has been done on R600 and R580+ cards and has shown stability at 150Mhz-160Mhz on the PCIE bus (Gen1). Corner lot testing has shown that 125Mhz should be the recommended default to cover worst case scenarios.
    • Limitation: For RD780 and RD790 only.
    • Function 2: To accelerate transfers of data b/w graphics (most notably in SW CrossFire)
    • Detail: Enable BIOS setting to allow P2P transfers
    • Limitation: For RD780 and RD790 only
    • Function 3: To maximize transfer bandwidth of graphics data with a HT1 CPU
    • Detail: Enable BIOS setting to double pump graphics data across HyperTransport
    • Limitation: For RD780 and RD790 only. For HT1 CPUs only (disable for HT3 CPUs)
    Sub Section Name: MemBoost (ON / OFF)
    • Function 1: To accelerate memory bandwidth performance with DDR2-800 or higher DIMMs with K8 CPUs
    • Detail: Alter memory timings for DDR2-800 or higher DIMMs
    • Limitation: For RD780 and RD790 only. For DDR2-800 or higher DIMMS. For K8 CPUs only.
    Fine tuning adjustments:
    Trc, reduce by 2
    Twr, reduce by 2
    Trrd, reduce by 1
    Tref, 7.8us instead of 3.9us
    Twtr, reduce by 1
    BankSwizzleMode, Enable
    Queue Bypass Max. increase to 7
    • Function 2: Disable DRAM PowerDown mode
    • Detail: Change register to 0
    • Limitation: For RD780 and RD790 only.
    • Function 3: Read Enthusiast DIMMs with multiple SPDs
    • Detail: Read Performance SPD that gives maximum performance
    • Limitation: For RD790 only.
    Stay tuned as i will have test to show performance gains

    Source: Chilehardware
  2. mascarilha

    mascarilha I folded Myself

    AMD AutoXpress Feature to Accelerate Performance of AMD RD790/RD780/RX780 Chipsets

  3. strafejump

    strafejump Power Member

    nem a única msg que aqui estava se deu ao trabalho de ler... 8|
  4. mais_um

    mais_um Power Member

    Isto tira cafés??? ..... :002:

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