Date: Wed, 23 Feb 2005 10:01:42 -0800 From: "David O'Brien" <obrien@freebsd.org> To: "O. Hartmann" <ohartman@mail.uni-mainz.de> Cc: freebsd-amd64@freebsd.org Subject: Re: More than 4 GBytes RAM on Socket939 system? Message-ID: <20050223180142.GB26395@dragon.nuxi.com> In-Reply-To: <421C4B1B.5070102@mail.uni-mainz.de> References: <421C4B1B.5070102@mail.uni-mainz.de>
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On Wed, Feb 23, 2005 at 10:21:31AM +0100, O. Hartmann wrote: > Will it be possible to address more than 4GBytes of RAM with the above > mentioned board (nVidia nForce4-SLI chipset)? Yes. If you can install >4GB RAM, the CPU+motherboard will use it. > The limitations are settled in the chip core, I think. No the limitation is with the CPU, which has 40 physical address lines. So you use 2^40 bytes of RAM. > AMD64 processores only address 4 memory slots and can not address > 128MBit memory chips, What is a 128 MBit chip? > But what is about 2GB modules as I mentioned above? See the recomendations for your motherboard. The motherboard+CPU can use 2GB modules, but some aren't made well and aren't fully to JEDEC spec. So do some research to find good 2GB DIMM's. -- -- David (obrien@FreeBSD.org)
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