[Wien] AMD or intel CPU

[ali ghafari]

Dear Prof. Blaha
Thank you very much for your professional advice. for optimize system does it matter which operating system we use or not? for example Debian is better or Ubuntu?
Best Regards
Ali


________________________________
 From: Peter Blaha <pblaha at theochem.tuwien.ac.at>
To: A Mailing list for WIEN2k users <wien at zeus.theochem.tuwien.ac.at> 
Sent: Thursday, June 28, 2012 8:44 AM
Subject: Re: [Wien] AMD or intel CPU
 
Intel I7 cpus are SIGNIFICANTLY faster than AMD.

Make sure it is an I7 (not I5,..), because they have the fastest memory access and run best with Lapack/Blas (because of the mkl-library) which is very important.

At the moment Intel offers:

i7-3820  300$, 130W, 4 cores, 3.6/3.8GHz, 10MB cache, 4 memory channels
                                                and 51.2 GB/s bandwidth
i7-3930K 600$, 130W, 6 cores, 3.2/3.8     12        ,  as above

i7-3770K 340$,  77W, 4 cores, 3.5/3.9   ,  8MB      , 2 memory channels
                                                   !!!!  25.6 GB/s !!!

So I would go clearly for a i7-3820  (or if you have more money) for a i7-3930K processor.

The last one (3770K) is produced in the newest technology (power saving), but I guess its memory bus is much slower!

Am 27.06.2012 13:53, schrieb ali ghafari:
> Dear Profs. Blaha and users
> We want to buy new computer for Wien2k calculation. The question is
> which kind of platforms (AMD or inlet) are suitable for Wien2k package?
> Best Regards
> Ali
> 
> 
> _______________________________________________
> Wien mailing list
> Wien at zeus.theochem.tuwien.ac.at
> http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
> 

-- Peter Blaha
Inst.Materials Chemistry
TU Vienna
Getreidemarkt 9
A-1060 Vienna
Austria
+43-1-5880115671


_______________________________________________
Wien mailing list
Wien at zeus.theochem.tuwien.ac.at
http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://zeus.theochem.tuwien.ac.at/pipermail/wien/attachments/20120628/bd791716/attachment.htm>