I am really not sure what the minimum requirements for passing DCA are, but if it failed it would it should tell you that your machine was not up to snuff instead of crashing. See Pete Brown’s blog entry with screenshots for what a failure looks like.
FWIW, SiliconDust requirements are
- Dual Core PC
- Windows 7
- 2GB RAM
- 4-8GB disk space per hour of HD recording, 1-2GB per hour of SD recording
- 100 or 1000Mbit Ethernet network
- Subscription to digital cable service CableCARD (M-Card) from your cable provider
