Advice on buying GPUs

From: Ajasja Ljubetič (ajasja.ljubetic_at_gmail.com)
Date: Wed Jun 01 2011 - 09:43:24 CDT

Dear all,

I received some founds to upgrade our old cluster. Currently we have
8x tyan mother board <http://www.tyan.com/product_board_detail.aspx?pid=453>
16x AMD Opteron Quad
2376<http://products.amd.com/en-us/OpteronCPUDetail.aspx?id=489>
8x 750 W PSU

The mother board has two PCI-E 2.0 8x.

I was thinking of buying either two GeForce GTX
580<http://www.nvidia.com/object/product-geforce-gtx-580-us.html>or
one GeForce
GTX 590<http://www.geforce.com/#/Hardware/GPUs/geforce-gtx-590/specifications>for
each node.
What would be the better option for running NAMD? We will start running some
medium (~300k atoms) membrane systems in the near future.
Or would I be perhaps better off buying new nodes? Any other suggestions
welcome.

Thank you for your help,
Ajasja Ljubetič,
Young reasercher,
Laboratory of biophysics,
Institute Jožef Štefan,
Ljubljana, Slovenia

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