Good stuff Andy. Here's an even more detailed perspective on the density confusion:
http://www.techsupportforum.com/showthread.php?t=75262 Carl -----Original Message----- From: Windows Home/SOHO [mailto:[EMAIL PROTECTED] On Behalf Of Andy Medina Sent: Saturday, July 08, 2006 4:06 PM To: [email protected] Subject: Re: Asus A7M266MB On Sat, 8 Jul 2006, Gaffer wrote: > I will bet that the ram stick has chips on both sides ! > That would be a high density stick. A low density would only > have chips on one side. The mainboard failing to see one side > of the ram stick is quite common ! That would be a *double sided* stick, not a *high density* stick. A double sided memory module is more likely to be low density rather than high density. This is because the *memory chips* used are of a lower capacity (lower density). More chips are needed compared to an equivalent sized memory module using higher capacity (higher density) memory chips. IOW density is in reference to the size (aaMb x b) of the memory *chips* that make up the memory module. Here's another way to look at this: ---------------------------- <http://www.ordersite.com/canadaram/terms.htm> Density: "When a RAM module is built, the manufacturer can design it using high density or low density chips. For example, modules built with 4 x 32Mb chips, 8 x 16Mb chips or 16 x 8Mb chips all come out to the same amount of RAM. However, the memory controller circuit in a computer must be able to address the chips on the module - if the memory controller cannot address higher density chips, that computer will only function with modules built with lower density chips." ---------------------------- Here's another ram vendor's definition of density (and a caution): ---------------------------- <http://www.pcboost.com/store/listmemory.asp?IDCategory=94> "DO NOT PURCHASE ANY HIGH DENSITY MEMORY FROM ANYONE UNTIL YOU PERSONALLY HAVE SEEN THE ACTUAL DOCUMENTATION SHOWING THAT YOUR SYSTEM CAN READ 1.5GB OR MORE MAXIMUM MEMORY. DON'T TRUST SOMEONE'S OPINION - SEE THE ACTUAL PRINTED DOCUMENTATION SHOWING 1.5GB OR MORE MAXIMUM MEMORY CAPABILITY BEFORE YOU BUY ANY HIGH DENSITY MEMORY FROM ANY COMPANY" " High Density = For systems that can accept 1.5GB or more maximum total system memory Standard Density = For Systems that can accept up to 512MB in any memory slot Low Density = For systems that can accept 512MB, 768MB, 1024MB maximum total system memory" ---------------------------- It seems (my observation only): Memory modules 1Gb and over are most likely high density only. Memory modules 64Mb and below are most likely low density only. That leaves the 512Mb, 256MB, and 128Mb memory modules with the low/high density option. -- ---------------------------------------- The WIN-HOME mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html -- ---------------------------------------- The WIN-HOME mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html
