Looks like the answer is yet...quite the machine you'll be running. Below are the System Requirements from the PowerDirector help:
System Requirements
The system requirements listed below are recommended as minimums
for general digital video production work.
Screen Resolution:
• 1024 x 768, 16-bit color or higher
OS:
• Windows Vista/XP/2000 (Windows XP Service Pack 2 is required
for HDV capture)
Memory:
• 256 MB required (512+ MB DDR recommended)
• 1 GB DDR2 Ram recommended for HD content editing
CPU:
• Capture/produce AVI: Pentium 2-450 MHz or AMD Athlon 500
MHz
• Capture/produce VCD Quality (MPEG-1): Pentium 3-600 MHz
or AMD Athlon 700 MHz
• Capture/produce DVD Quality (MPEG-2): Pentium 4-2.2 GHz or
AMD Athlon XP 2200+
• Capture/produce High Quality MPEG-4 and Streaming Videos
(WMV, QuickTime, RealVideo, DivX): Pentium 4 2.4 Ghz or AMD
Athlon XP 2400+
• Produce MPEG-4 AVC and MPEG-2 HD Files: Pentium 4 3.0 Ghz
with HyperThreading or AMD Athlon 64 recommended
• Edit HD Contents: Pentium 4 3.0 Ghz Duel Core CPU
recommended
• CyberLink PowerDirector 6 is optimized for CPU with MMX/SSE/
SSE2/3DNow!/3DNow! Extension/HyperThreading technology
• CyberLink PowerDirector 6 editing engine is optimized for Intel
Duel Core CPU.