[gmx-users] 4 x Opteron 12-core or 4 x Xeon 8-core ?

[David McGiven]

Dear Gromacs Users,

We're going to buy a new server for HPC. It is going to run mainly  
Gromacs calculations.

Regarding Gromacs performance, I'm wondering which one, you Gromacs  
users and developers, think will be faster.

AMD Server :   4 x AMD Opteron 6176 12-core 2.3 Ghz + 96GB Memory  
(2GB / core)
Intel Server : 4 x Intel Xeon 8-core 2.66 Ghz + 64 GB RAM (2GB / core)

We normally run ~100k atom systems with PME and explicit water.

Which one would you recommend ?

Also, of course, AMD Server is cheaper. But we are mainly interested  
on performance.

Thanks.

Best Regards,
David