I have built a research machine with the following setup.

It was built for remote developers to run tests on it. It also has a USRP2
setup on it with DBSRX addon. Its purpose was to reduce the cost of people
who want to work on this project and be able to test their work on this
setup and ultimately improving the whole. Up to now only 3 developers are
using the machine and they are working on the performance boost.



1x OS primary disk (specs not important)
4x Samsung F3 SATA spinpoint 1TB each (with 500GB of tables on each) 7200rpm
16MB Cache (cache is irrelevant to what we are doing, correct me if i am
wrong)
1x 5770 ATI GPU from XFX
1x AMD Phenom XII (with 3rd core enabled with motherboard hack, my 4th core
was not stable) over clocked from 3.2 to 3.7Ghz
2x 2GB OCZ performance ram (gold edition)
1x Asrock MB 880G

The drives are hooked up via SATA under AHCI setup in the bios in order to
be able to get full NCQ support. (and not to have a shared SATA controller
which reduces performance)

With this setup we can crack the key in 35seconds using 4 Hard disks. This
time is not good enough.
Essentially increasing the Hard disks will make it faster, and moving away
from magnetic media and moving to flash SSD type disks will be better but
the cost is outrageous.. 1 x 500GB SSD drive is around 1300 euro so if we
need 4 you can see that its out of reach as far as cost is concerned.

Anyone have good contacts with SSD manufacturers or suppliers?





On Tue, Sep 21, 2010 at 5:47 PM, g0tcha <[email protected]> wrote:

>  Only tried the hd 5970, as many have stated on the mailing list the
> biggest bottleneck is the disks
>
>
>
> *From:* luca bongiorni [mailto:[email protected]]
> *Sent:* Tuesday, September 21, 2010 4:38 PM
> *To:* [email protected]; g0tcha
>
> *Subject:* Re: [A51] finding kc
>
>
>
> Just a question...
>
>
> which other GPU you or the other users of this community tried, that has a
> good value-for-money?!
>
>
> Thank you in advance
>
> Regards
>
>
>
> Great thanks for the info
>
> Gonna try and understand this burst bits better
>
> Using 1 disk currently with hd5970 gpu, will be adding more disks soon
>
>
>
> _______________________________________________
> A51 mailing list
> [email protected]
> http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51
>
>
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