about the latest ubuntu

Wed Apr 4 21:14:54 EDT 2007

That's interesting, a much more thorough manual than one usually comes across.
I don't like scanning my manuals for specific info like that, because 
when I start talking about laying out cash I get serious.  I like to 
try and download the manuals from the internet as soon as I get new 
hardware.  Even if I have no intent of reading it any time soon, its 
nice to have on hand in case you need it later.  As fast as 
technology changes, it may not be available if you wait too long.
I've never had a motherboard like that one which allows for use of 
either Simms or Dimms, and one that breaks the slots down into 2 
banks a piece.  It's a pretty cool idea though.
Motherboards can be fussy things though, way back when I was using 
128K Simms, I had a motherboard that wanted parity modules, but 
wouldn't use 3 chip Simms, only the 9 chip type.
The one thing I have found in the past is that it is good to not get 
too creative, and while now-a-days you can usually mix modules of 
different size, you don't want to mess around mixing parity verses 
non-parity, and while it usually holds true that you can mix memory 
speeds in older systems, they aren't as forgiving these days.

At 03:06 PM 4/4/2007, you wrote:
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>On Wed, Apr 04, 2007 at 11:16:05AM -0400, talmage at somtel.com wrote:
> > That's not necessarily true.
> > It's system dependent.
> > Factors include Bios and motherboard.
> > To find out what, and how to add memory, the best source is your
> > computer, or motherboard's, manual.
> >
>
>Well, I've been building/fixing systems for 7 years now, and I never
>quite got the hang of the ram installation description in mb
>manuals. For example, the manual for one of my boards reads:
>
>"This motherboard provides three 168 -pin DIMM sites for memory expans
>ion. The DIMM sockets support IMx64 (SMID, 2Mx64 (16MID, 4Mx64 (32MIT,
>SMx64 (64MIT, 16Mx64 (128MIT, 32Mx64 (256MID and 64Mx64 (512MB) or
>double-sided DIMM modules. Minimum memory size is SMB and maximum
>memory size is I.5GB SDRAM. There are three Memory module sockets on
>the system board. (Total six banks)
>In order to create a memory array, certain rules must be followed. The
>following set of rules allows for optimum configurations.* The memory
>array is 64 or 72 bits wide. (Depending on with or without parity)
>* Those modules can be populated in any order
>* Supports single and double density DIMMS
>Table 2-1. Valid Memory Configurations
>Bank
>Memory Module
>Total Memary_
>Bank 0, 1 (DIMMI)
>8, 16,32, 64,128, 256,512MB
>SMB - 512MB
>Bank 2, 3 (DIMM2)
>8, 16, 32, 64,128, 256, 512MB
>SMB - 512MB
>Bank 4, 5 (DIMM3)
>8, 16, 32, 64,128, 256, 512MB
>SMB - 512MB
>Total System Memory
>SMB - L5GB"
>
>This is OCRED, so I know it doesn't read quite right. However, this
>for example seems clear enough:
>
>"2Mx64 (16MID, 4Mx64 (32MIT,"
>
>2X64 = 128, and 4X64 = 256, and not as they say 16 and 32. So, how are
>they getting those numbers, or am I not reading this correctly due to
>the OCR?Fortunately for me, all the modules in this system are non-ecc,
>and the manual does say:
>
>"(Depending on with or without parity)
>* Those modules can be populated in any order"
>
>Also, there are 3 sockets on this board, and 6 banks. I've always
>interpreted that to mean that each bank is for each side of the module,
>(I.E. bank 0 is for the first side of the first module, bank 1 is for
>the second side of the first module). Is that correct?
>
>BTW, I've currently got 512M of RAM in this system, consisting of 2 
>128M modules,
>and a 256 module, all pc100. I'm looking to replace at least one of 
>the 128 modules
>with at least one 256 module, but new RAM of this type is expensive,
>and more often then not, out of stock. Would anyone happen to have
>1 or more 256 or 512 modules of this type laying around that you wouldn't mind
>sticking in an envelope, tossing in the mail, and parting with? If so,
>please let me know privately. Does anybody have an idea how much a 256
>or 512 module of this type would reasonably go for from a used pc
>parts store?
>
>Greg
>
>
>
>
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