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Date: Sat, 8 Dec 2012 23:40:38 +0100
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: GPU based cracking, AMD or NVIDIA

On 8 Dec, 2012, at 19:57 , Solar Designer <solar@...nwall.com> wrote:
> On Fri, Dec 07, 2012 at 07:45:21PM +0100, magnum wrote:
>> Fact is even that current nvidia cards are often more or less slower than the previous generation. At first I thought it was due to compilers and optimizers not being mature but this fact stands. At best, a GTX680 is insignificantly faster than GTX580.
> 
> Are you aware of any password cracking related task where GTX 680 is any
> faster than GTX 580?  I've only seen (non-JtR) benchmarks showing it
> being slower - often several times slower, even.  (I don't have one to
> test myself, though.)

With late OpenCL drivers the gap has decreased a lot, or the 680 has even become the winner at times - with a really tiny margin. I have never seen the 680 significantly outperform a 580 in any application. Like you, I have seen the opposite but I think that was mostly due to premature drivers that did not handle Kepler well.

magnum

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