That depends on the number and type of CPUs available. I know better than to race my CPU against a GPU. I won't win. I'm just pointing out the fact that if you have a fast GPU (or a cluster of them as the article suggests), then the hashes should be much better than what is provided. With those hashes, any CPU based cracker can do them easily.
The article says 1 to 6 character passwords. With 12 cores, I can enumerate the full printable ASCII character set in about 30 hours, but I would not try to do that. I would use patterns and word lists first. After 6 to 7 characters, brains begin beating the hell out of brute speed.
I use brute force on 0 to 5 character attempts. I get smart at 6 or more characters. No need to use brains or GPU speed to crack 5 char passwords. Here are more weak hashes from his list:
My point still stands. These should have been better/stronger hashes. I did all of that in less than an hour on a CPU using full enumeration (aka brute force).
The article says 1 to 6 character passwords. With 12 cores, I can enumerate the full printable ASCII character set in about 30 hours, but I would not try to do that. I would use patterns and word lists first. After 6 to 7 characters, brains begin beating the hell out of brute speed.