Power plane region of printed circuit board with power blocks having an arc-shaped boundary

A power plane region of a multi-layer printed circuit board for providing a plurality of voltage levels, the multi-layer printed circuit board further comprising at least a ground plane for providing a ground reference level, at least a signal plane comprising a plurality of trace regions that are conductors for transmitting signals, and at least an opening for electrically connecting the trace regions with the power plane region or the ground plane, the power plane region comprising:

• a plurality of power blocks for providing the voltage levels;
• and
• at least an insulating line positioned between two adjacent power blocks with different voltage levels, the insulating line comprising a plurality of first line segments and a plurality of second line segments that are smooth curves;
• wherein when an included angle of two adjacent first line segments is greater than a predetermined angle, the two adjacent first line segments are connected by the second line segment.

A computer system comprising a multi-layer printed circuit board, the multi-layer printed circuit board comprising:

• a north bridge chipset;
• at least a ground plane for providing a ground reference level;
• at least a signal plane comprising a plurality of trace regions that are conductors for transmitting signals;
• at least a power plane region comprising a plurality of power blocks for providing a plurality of voltage levels, two adjacent power blocks with different voltage levels being separated by an insulating line, the insulating line comprising a plurality of first line segments and a plurality of second line segments that are smooth curves, the power blocks at least comprising three ground blocks for electrically connecting to the north bridge chipset;
• and
• at least an opening for electrically connecting the trace regions positioned on the signal plane with the power plane region or the ground plane;
• wherein when an included angle of two adjacent first line segments is greater than a predetermined angle, the two adjacent first line segments are connected by the second line segment.