Wonder if it is guaranteed that my below system could handle AVCHD file editing in Power Director 8 with ease without freezing or jerkiness.

I run Windows Vista 64.

My video camera is Sony HDRXR500V that records in Full HD 1080i with aspect 16:9 in dolby 5.1ch.
I import videos to the PC from the camera by connecting the two by USB and simply copying AVCHD folder into a new directory on the PC.

My computer is Base processor Core 2 Quad Q6700 (K) 2.66 GHz
1066 MHz front side bus Socket 775 Chipset
Intel G33 Express
Motherboard
Manufacturer: Asus
Motherboard Name: IPIBL-LB
HP/Compaq motherboard name: Benicia-GL8E
Memory
Component
Attributes
Memory Installed
6 GB
Speed supported
PC2-6400 MB/sec
Type
240 pin, DDR2 SDRAM
Hard drive
750 GB SATA 3G (3.0 Gb/sec)
7200 rpm
Video Graphics
GeForce 9500 GS
512 MB GDDR2 memory
I/O Ports: HDMI, VGA, dual-link DVI Read not to contradict and confute, nor to believe and take for granted... but to weigh and consider.