(Solved)TBS 6928 hardware requirements for PayTV in HD

Hello,
what are hardware requirements for TBS 6928 used with HD resolution? I bought TBS 6928 + CAM Irdeto CI+ Neotion for my HTPC with following setup:
MB: ASUS M4A78-HTPC
CPU: AMD Athlon™ II X2 Dual-Core 235e; 2.7 GHz; 2MB cache; 45W
RAM: 2GB
graphic card: integrated ATI HD 3200
Software used:
Windows 7 64-bit
TBS drivers version: 1.0.1.1
TBS Viewer: V20111103
AMD Catalyst 11.12 (latest drivers for HD 3200)
SD channels are ok, but i experience problems with HD channels - picture freezes and blank lines appear during fast moves in HD video. I checked in Win System Monitor and one core is used in average at 50% and second at 90%. I know this setup is capable of playing HD video, because i can play any Bluray disc using Power DVD software with CPU usage around 30%, so i suspect problem is in CAM decoding?
I tried tuner in my second gaming PC with Phenom II X2 550 3100MHz and ATI HD 5770. Picture was not freezing anymore, but blank lines during fast moves in video was still present on some channels so something like 90% satisfaction on gaming PC
If my HTPC setup does not meet hardware requirements, can you please advice best upgrade, so i can watch HD channels smoothly and keep power consumption and noise of computer low?
EDIT: Corrected onboard graphics chip - it is HD 3200 and not HD 4200.
what are hardware requirements for TBS 6928 used with HD resolution? I bought TBS 6928 + CAM Irdeto CI+ Neotion for my HTPC with following setup:
MB: ASUS M4A78-HTPC
CPU: AMD Athlon™ II X2 Dual-Core 235e; 2.7 GHz; 2MB cache; 45W
RAM: 2GB
graphic card: integrated ATI HD 3200
Software used:
Windows 7 64-bit
TBS drivers version: 1.0.1.1
TBS Viewer: V20111103
AMD Catalyst 11.12 (latest drivers for HD 3200)
SD channels are ok, but i experience problems with HD channels - picture freezes and blank lines appear during fast moves in HD video. I checked in Win System Monitor and one core is used in average at 50% and second at 90%. I know this setup is capable of playing HD video, because i can play any Bluray disc using Power DVD software with CPU usage around 30%, so i suspect problem is in CAM decoding?


If my HTPC setup does not meet hardware requirements, can you please advice best upgrade, so i can watch HD channels smoothly and keep power consumption and noise of computer low?
EDIT: Corrected onboard graphics chip - it is HD 3200 and not HD 4200.