Guys I just took in a HP business class desktop dc5800 small form factor that has HP board 2820h with a Core 2 E8400. bios 01.51.
I want to max it on memory and install a Radeon card; it will do double duty as HTPC and lab mule [as conditions warrant]... and a bit of file serve on the side.
OS is Win7 Ultimate x64
the maybe twin brother of this system is better known I think: the HP dc7800; I have not determined yet if they have identical boards.
For each, there are some people claiming they were able to put 4x4gb in the system. the advertised max is 4x2GB.
I have 2 questions.. is the 16GB possible, and what is the best timing/speed part to use? crucial shows a generic part for the model since it can be equipped with a range of processors with diff FSB. this one presumably is 1333MHz
the 2x2 is for the ultra small form factor. the 'normal' sff, which I have, is 4 slot, two banks per channel
the problem with hp's spec is that to save documentation proliferation they give the lowest common denominator, as the same model .. i.e. dc7800 or dc5800, can come with a wide range of processors with wide range of fsb. same with the "memory finder" at crucial etc. none are specific to the model by processor. this I using Wolfdale @3ghz @1333MHz so I am thinking the sweet spot is ddr2 1066
quick read of the web is the bulk are running 10600 on E8400 - most ddr2 - some later mboards - ddr3. the default 800 mem runs at 6-6-6, bus clock reading 1330 per cpu/z
I can live with 8gb I guess, but will try to find the history of bios revisions