Re: AMD dual core vs Intel core 2 quad
--- Freddie Cash <fjwcash@gmail.com> wrote:
> The only way to save parts would be to get a 4-socket motherboard and AMD
> Opteron 800-series PCUs. Then you could re-use your RAM.
Together with other suggestions that were kindly provided, that above makes an
alluring prospect for me. Thanks. My point of view is that when a 8xxx series
is offered, they already have a 8xxxx series ready for offer. I rely much on
the quality of the software, too, in particular the algorithm for
parallelization and the model, i.e., for MD the force field. Bad ones fight
against any advancement in hardware. I would be much indebted for a
clarification of details, at the reader convenience.
----8xx series (without their box/fan) are found for little. Should the four
8xx be the same clock? (as they are found as single, or at most as pairs).
Also, is the box/fan specific of the 8xx series or can I use the box/fan for
the 2xx I have? (and only look for two additional boxes/fans).
----In the European union - where I am - a four-way mainboard for 8xx and 184
pin ECC is not easy to find. Worldwide, I came across brand new "Supermicro
H8QCE-B Quad Opteron 800 Dual Server motherboard" and "Supermicro CK804 Quad
Opteron 800 Dual Server motherboard" at an affordable price (though as much as
$200 are charged for shipping).
----As to the mainboard, which specifications should I check in order that
there is no too narrow bottleneck for the 8xx cpus and ECC 400MHz? Optionally,
it might help to have a connection to make a cluster with an 8-way server,
should I decide one day to transfer my private server to my institution.
----Can different memory slots (8 2GB ECC and 8 1GB ECC, all 400MHz and same
voltage) be assembled into the 16 slots of the mainboard?
Thanks a lot
francesco pietra
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