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Date: Mon, 7 Dec 2015 14:37:35 +0100
From: Frank Dittrich <>
Subject: Re: hashcat CPU vs. JtR

On 12/07/2015 01:32 PM, Solar Designer wrote:
> And yes, except for
> GPU-unfriendly hash types it is obvious that using a GPU is going to be
> faster, if one does have a GPU.

Not sure about oclHashcat, but with John the Ripper, GPU formats usually 
require a much larger number of password candidates to achieve their 
max. speed.
If you have to test several small attacks (word lists / patterns) 
against a huge number of password hashes, or with john's --single mode, 
the CPU format may often be the better choice, even if the GPU format 
reports a much better c/s rate.


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