Intel updating his motherboards for Prescott

Posted on Friday, August 15 2003 @ 8:24 CEST by Thomas De Maesschalck
On the 13th and 14th of August two documents appeared on Intel his website about their current Springdale and Canterwood motherboards. Intel is updating some of their motherboards to make them Prescott compatible. These Prescott compatible motherboards from Intel are expected in September.


The Canterwood product change notification document speaks about :
1. VREG enhancement - Moving from Northwood FMB 2 to Prescott FMB 1.5 support.
2. New BIOS - Includes updates to address an E9 POST hang. When the BIOS is released, detailed release notes will be posted to the following location: http://developer.intel.com/design/motherbd/BZ/bz_bios.htm
This is about Intel his D875PBZ motherboard.


The Springdale product change notification document speaks about :
1. Enhance the CPU VREG for future processor support. This enancement involves the following changes:
2. Add P09 BIOS. This BIOS version will be posted at http://developer.intel.com/design/motherbd/bf/bf_bios.htm. Please refer to the BIOS release notes that will accompany the BIOS for additional feature information.
This is about Intel his 865GBF, 865GBFL and 865GBFLK Springdale motherboards.


In the Springdale document Intel also posted the enhancements which these motherboards need for Prescott support:

Load Line Changes For Future Processors:
Change the resistor value at location R5C17 from 1.21K Ohm to 931 Ohm.
Change the capacitor value at location C5C4 from 680pF to 470 pF
Change the resistor value at location R5C27 from 37.4K Ohm to 20K Ohm
Change the resistor value at location R4C1 from 453K Ohm to 681K Ohm
Change the capacitor value at location C4C5 from 1800 pF to 1000 pF
Change the capacitor value at location C4C6 from 3300 pF to 1000 pF
Add a 820 pF capacitor to location C4C4
Add a 511 K Ohm resistor to location R4C8
Change the resistor value at location R4C9 from 52.3 K Ohm to 75K Ohm
Change the resistor value at location R4C10 from 61.9 K Ohm to 130K Ohm
Change the resistor value at location R4C5 and R4C6 from 110K Ohm to 200K Ohm
Change the 500 nH at locations L2B1 and L3B1 from 30 A to 40 A
Change the bulk capacitors at locations C1C3, C1C2, C2C1, C3C2, C3C1, C4C3, C4C2 to 680uF
Change the bulk capacitors at locations C3C3, C2C2, C2C3 to 820uF
Change the ceramic capacitors at locations C2D2, C2D1, C3D1, C2D3, C2D5, C2D8, C2D9, C2D10, C3E1, C2E1, C2E2, C2E3, C2E4, C2E5, C2E6, C2E7, C2E8, C2E9, C2E10, C2E11 to 10 uF


GMCH VTT support
Add transistors to locations Q7B1, Q7C1, Q6B4, Q7B2
Add 221 Ohm resistor to location R7B6
Add 562 Ohm resistor to location R7B8
Add 1K Ohm resistor to location R7B7
Add 0 Ohm resistor to location R7C1
Add 1K Ohm resistor to location R7B9
Add op-amp to location U7B1
Add 1 uF capacitors to locations C7C3 and C6B6
Add 4.7 uF capacitor to location C7B11
Add .1 uF capacitor to location C6B5
Remove resistor pack from location RP5D1


Processor Detect
Add 15K Ohm resistor to location R6B6
Add 10K Ohm resistor to location R6B1
Add 2.7K Ohm resistor to location R6B5
Add 10K Ohm resistor to location R6B7
Add transistors to locations Q6B1, Q6B2, Q6B3


Support For Dual Load Lines
Add FET transistor to location Q5C1
Remove pull-down resistor from the processor's bootselect pin



I have no idea if any of the current motherboards avaible from other motherboard makers will support the first socket478 Prescotts.


About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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