We've done OK with the HP quad socket DL580G7's. They have 64 dimm sockets, so 
we can stick with 16s and get 1TB. The big issue is the MTBF on dimms; infant 
mortality was a real pain on these. Aside from that, they've been pretty good.
 -nld

On Aug 29, 2012, at 10:33 AM, Doug Hughes wrote:

> On 8/29/2012 8:57 AM, Edward Ned Harvey (lopser) wrote:
>> I happen to support a lot of high mem high performance jobs, including EDA 
>> tools, with sims that will consume 100G+ memory... I haven't yet seen the 
>> situation where we deemed the cost of the hardware upgrade to be the most 
>> significant factor.
> 
> from 384GB to 768GB is a huge jump. the 16GB to 32GB dimms is about 4x the 
> price. the price per system jumps from the $20k area to the $80k area.
> 
> Also, we tend to steer clear of the exotic quad processor and stacked 
> motherboards since they are far less tested in the field than dual socket 
> off-the-shelf versions. (they also cost a lot more).
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