This page is about how to build a low-power server around an AMD Geode NX1750+ CPU using the Linux OS.
The most difficult part is to rebuild and configure the
powernow-k7 kernel module. Once you have done that, your desktop system will have the same power but consumes considerably less power.
Right now, this is only a link section where the information can be found, which helped me to build a Linux server around a Geode-powered system.
The modification adds the following parameters to the
powernow-k7 module (table taken from Adam Jones' site)
||Set to non-zero to enable manual frequency table specification.|
||Specifies an array of FSB multipliers, which must be multiplied by 10 (e.g. 8.5 -> 85, 10 -> 100).|
||Specifies an array of Vcore voltages corresponding to the given multipliers, in mV (e.g. 1125 -> 1.125V).|
||Set the settling time for CPU state transitions in microseconds. The default is 200us.|
I found the following setting useful:
modprobe powernow-k7 overwrite_table=1 multiplier=30,60,75,90,105 voltage=1050,1050,1050,1250,1250 switch_latency=300
Although the voltage-setting is completely academic (I haven't found a desktop board yet that supports VID-switching), the switch latency setting is important. At 200us, I inevitably got lock-ups during FID-changes.