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12-31-2017, 04:53 PM
(This post was last modified: 12-31-2017, 04:54 PM by William P.)
The XPS 410,9200, and E520 all share the same MB layout. The PLL is locked to 266FSB. This is done by a .7 Volt TME latching input signal to PLL pin 4 during POST. The pin them becomes a PCI output frequency. This prevents spoofing it with a pull down resistor. It might be possible to hex edit this setting in SetFSB, or RW Everything. This also blocks SetFSB, and pinmods from working.
The 45nm Core2 CPUs use VID11, the 65nm use VID10 Voltage table. So VID pinout is different.
You can run a QX6800 SLACP and overclock it with Throttlestop 6.00 software in Windows to as much as 4GHz. This gives control of multiplier, and voltage.The Multiplier steps ARE whole integers. This doesn't answer the question as it was asked, but does provide another approach to improving the performance of these systems. Heatsinking the VRM MOSFETs, and removing the fan power from the MB header help a lot.