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Date: Thu, 22 Mar 2012 08:18:41 +0400
From: Solar Designer <>
Subject: Re: New patch for OpenCL SHA-512

On Mon, Mar 19, 2012 at 08:34:16AM -0300, Claudio Andr? wrote:
> I have a $ 110,00 dolars GPU [1],  400 MHz (versus 3 Ghz 6 core AMD CPU
> in openMP) , only 128 bits.Not that good.

The Amazon link you posted is for Sapphire Radeon HD 6770 with 850 MHz
core clock.  It is a decent one.  400 MHz is only the RAMDAC max speed,
which is irrelevant.  The 128-bit memory bus is relatively unimportant.

So your GPU should actually deliver better performance per dollar than
e.g. 7970 does.  It is only about 3 times slower, but is 5 times cheaper.

I think it should be possible to achieve much better SHA-512 crypt speed
on it.


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