This is mostly irrelevant in the context of password hashing however. We're simply feeding passwords into a blackbox at X/s until we get a match. 3DES runs at approximately X/3 compared to DES. If it takes 4 days to feed a bajillion passwords into DES, it takes 12 days to feed the same number into 3DES.
It might be relevant, because the original asker said "with a sufficiently long password". (Implicitly: with a password longer than 8 characters that the original DES scheme would allow.)
