Thank you very much for your reply, kliu0x52. I don't use the check multiple file feature and that's why I never really thought about where to place the checkmark. As for the speed issue, I just noticed that you're right. It does have influence having the file in cache and it is why HC has been slower than HT. It's because in my trials, I always try hashing a file with HC and after that I hash it with HT... Dumb of me for not having noticed. Cheers