[ltp] single-bank vs. double-bank RAM

Thomas Breitner linux-thinkpad@linux-thinkpad.org
Sat, 31 Dec 2005 13:14:44 +0100


Hello,

thanks a lot! Feelin much "safer" now...

cu,
thomas


Am Freitag, den 30.12.2005, 19:55 +0100 schrieb Laurent Gilson:
> Hello
> 
> > Does anybody know if there's a disadvantage for my thinkpad, when the
> > second DIMM is labeled "Single-bank Connection"?
> 
> No, the TP will not bother.
> 
> > - I don't even know
> > what this Double-vs.-Singe-bank-thing means...
> 
> (1 Byte = 8 Bit)
> 
> Double: 16 logical chips, each storing size/2 Bits. (512 MB => 16x 256MBit  
> Chips)
> Single: 8 logical chips, each storing size Bits. (512 MB => 8x 512MBit  
> Chips)
> 
> On normal SD and DDR you can simply count the chips. On NotebookRAM things  
> are a bit more compilcated. The visible chips contain multiple internal  
> chips.
> 
> All in all the motherboard needs to know and support the chips. That's a  
> bit of a problem to figure out since some boards support single 512  
> MBit-Chips but not double 256 MBit-Chips or vice-versa.
> 
> cu
-- 
_____________________________________________
Thomas Breitner

mail@tombreit.de   |   http://www.tombreit.de