Crunch generates about 1750GB wordlist file for lower or uppercase A-Z 8 characters.

The question I have is:
If i use a "pipe | " to save the space and run Reaver / Pyrit through the crunch, it will take about a week to crack 8 character WPA2 password.

but if I actually save both lower and uppercase generated files (about 3600GB) and then crack through these wordlist files, would it save any time or it would still take the same time.

Also please mention, which package is better to crack the WPA2 Handshake file.

Thanks (*sorry for my bad english *)