Hello,
thanks for your interest in ACC V2.
Please find the hardware requirements information in the respective release notes and/or data-sheet of the product:
http://www.astaro.com/content/downlo...tasheet_us.pdf
http://up2date.astaro.com/ACCV2_ReleaseNotes.pdf
For just testing/trying it out your Celeron system might suffice but this won't allow you to scale over say 10 managed gateways.
ACC only requires one NIC, additional NICs can be used optionally.
Gigabit Ethernet is not required. More important is the available bandwidth from your ACC to the managed gateways and from your ACC to your browser. With one device, you probably can still use the system with ISDN or a modem connection ;-)
Regards,
Henning