Re: Re: Hardware question

*To*: mathgroup at smc.vnet.net*Subject*: [mg60383] Re: [mg60317] Re: Hardware question*From*: Manuel Schmidt <Manuel.Schmidt at physik.uni-wuerzburg.de>*Date*: Wed, 14 Sep 2005 05:26:36 -0400 (EDT)*References*: <dfp4ca$icf$1@smc.vnet.net> <dfrg7q$fol$1@smc.vnet.net> <200509131006.GAA09651@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

> How long--and how wide :-) > > I have the fastest AMD chip in existence, the FX-55 (unless the FX-57 > is now available), but I couldn't find a mother board that could take > more than 4GB of RAM. (And if I put that much in, it would only see > 3GB of it--a limitation of the bridge chip.) > > Also, does even Linux x86-64 allow 8GB without tweaking? > > --Ron Bruck I thought, it is no problem, to adress as much memory as you want with 64Bit (about 10^10GByte) and the kernel configuration says, that iommu (whatever this is) is needed to use more than 4GB of RAM. By the way: We ordered a dual opteron system with 12GB RAM (max. 16GB) with a Tyan Board. The Sun Workstations were too expensive (but thank's for the reply anyway). I will send in some benchmarks, when we are up. Thank you all for reply! Manuel

**References**:**Re: Hardware question***From:*Ronald Bruck <bruck@math.usc.edu>