New Features over BX1:

1. Kentsfield Support
    > Conroe/XE Support ECO’d in BX WW13 (AA# -304)
    > New Heceta to support PECI
    > Layout and stack-up changes/tuning that gain margin for
both default and over-clocked operation
2. SATA II Controller
    > Marvell 4-port SATA2 PCIe controller
3. Sigmatel Audio Upgrade (for Vista compliance)
4. CK-505 Clock
5. Physical switch for Power On/Off
6. Enhanced voltage tweaking options for non CPU related circuits
7. BIOS Enhancements
    > Improved User interface/OC steppings

New Features over BX1:

1. Kentsfield Support
    > Conroe/XE Support ECO’d in BX WW13 (AA# -304)
    > New Heceta to support PECI
    > Layout and stack-up changes/tuning that gain margin for
both default and over-clocked operation
2. SATA II Controller
    > Marvell 4-port SATA2 PCIe controller
3. Sigmatel Audio Upgrade (for Vista compliance)
4. CK-505 Clock
5. Physical switch for Power On/Off
6. Enhanced voltage tweaking options for non CPU related circuits
7. BIOS Enhancements
    > Improved User interface/OC steppings