An unknown poster wrote, in part:
> Can someone explain what's different about these two Crucial memory
> sodimm modules:
>
> CT32M64S4W7E
>
> CT32M64S8W7E
_____
Perhaps you are thinking of the guide for reading Micron memory chip
designations (Crucial is a division of Micron.)
"nospam" <nospam@comcast.invalid.net> wrote in message
news:aJWdnSqakMHOHTbVnZ2dnUVZ_uydnZ2d@comcast.com. ..
> Can someone explain what's different about these two Crucial memory
> sodimm modules:
>
> CT32M64S4W7E
>
> CT32M64S8W7E
>
> I understand 32M64, but what's the difference between S4 and S8?
>
> Crucial used to have an explanation online, but ****ed if I can find it
> now.
>
> Thanks!!
>
>
Phil Weldon wrote:
> An unknown poster wrote, in part:
>> Can someone explain what's different about these two Crucial memory
>> sodimm modules:
>>
>> CT32M64S4W7E
>>
>> CT32M64S8W7E
> _____
>
> Perhaps you are thinking of the guide for reading Micron memory chip
> designations (Crucial is a division of Micron.)
>
> From the Crucial website:
>
> 256MB
> CT32M64S8W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz
> . 3.3V . 32Meg x 64 .
>
> 256MB
> CT32M64S4W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz
> . 3.3V . 32Meg x 64 .
>
> Seem to be identical specs.
>
> Phil Weldon
They're not identical. One is high density, and the other is low density.
To tell the difference, one speculative technique, is the part number
printed on the bag. I offer these two pictures, as a means of guessing
at the difference.
The best way to avoid problems, is to use the Crucial search engine
to get a part number. But for prebuilt computers (Dell, HP etc),
the part number returned is not a generic "CT..." type number, but
a number only for a limited number of prebuilt computers. And then
it becomes even more difficult to tell what you're getting.
Basically, the idea is, you pay a premium for product knowledge,
which the vendor withholds to make more money. As consumers, we could
break this system, by posting images of each proprietary product
offered, but that isn't likely to happen any time soon. And
heat spreaders with warranty stickers on them, to seal them,
is another technique to obfuscate the product knowledge.
Paul
>
> "nospam" <nospam@comcast.invalid.net> wrote in message
> news:aJWdnSqakMHOHTbVnZ2dnUVZ_uydnZ2d@comcast.com. ..
>> Can someone explain what's different about these two Crucial memory
>> sodimm modules:
>>
>> CT32M64S4W7E
>>
>> CT32M64S8W7E
>>
>> I understand 32M64, but what's the difference between S4 and S8?
>>
>> Crucial used to have an explanation online, but ****ed if I can find
>> it now.
>>
>> Thanks!!
>>
>>
>
"Phil Weldon" <not.disclosed@example.com> wrote in message news:1u2dnb84TP0gFjbVnZ2dnUVZ_qXinZ2d@earthlink.co m...
> An unknown poster wrote, in part:
> > Can someone explain what's different about these two Crucial memory
> > sodimm modules:
> >
> > CT32M64S4W7E
> >
> > CT32M64S8W7E
> _____
>
> Perhaps you are thinking of the guide for reading Micron memory chip
> designations (Crucial is a division of Micron.)
CT=Crucial Technology
>
> From the Crucial website:
>
> 256MB
> CT32M64S8W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz .
> 3.3V . 32Meg x 64 .
>
> 256MB
> CT32M64S4W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz .
> 3.3V . 32Meg x 64 .
>
> Seem to be identical specs.
>
> Phil Weldon
Thanks Phil, but I think I finally stumbled on the answer, or at least half
the answer.
S4/S8 refers to chip density:
S4 = 128Mbit chips, 16MB x 16 chips = 256MB
S8 = 256Mbit chips, 32MB x 8 chips = 256MB
Apparently Crucial had so many compatibility issues with the 256Mbit
chips ("high density") they stopped selling them. Or at least I think
that's the case (that's the half I'm not sure of).
nospam wrote:
> "Phil Weldon" <not.disclosed@example.com> wrote in message news:1u2dnb84TP0gFjbVnZ2dnUVZ_qXinZ2d@earthlink.co m...
>> An unknown poster wrote, in part:
>>> Can someone explain what's different about these two Crucial memory
>>> sodimm modules:
>>>
>>> CT32M64S4W7E
>>>
>>> CT32M64S8W7E
>> _____
>>
>> Perhaps you are thinking of the guide for reading Micron memory chip
>> designations (Crucial is a division of Micron.)
>
> CT=Crucial Technology
>
>> From the Crucial website:
>>
>> 256MB
>> CT32M64S8W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz .
>> 3.3V . 32Meg x 64 .
>>
>> 256MB
>> CT32M64S4W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz .
>> 3.3V . 32Meg x 64 .
>>
>> Seem to be identical specs.
>>
>> Phil Weldon
>
> Thanks Phil, but I think I finally stumbled on the answer, or at least half
> the answer.
>
> S4/S8 refers to chip density:
>
> S4 = 128Mbit chips, 16MB x 16 chips = 256MB
> S8 = 256Mbit chips, 32MB x 8 chips = 256MB
>
> Apparently Crucial had so many compatibility issues with the 256Mbit
> chips ("high density") they stopped selling them. Or at least I think
> that's the case (that's the half I'm not sure of).
>
>
"Paul" <nospam@needed.com> wrote in message news:g8g79d$nq7$1@aioe.org...
> nospam wrote:
> > "Phil Weldon" <not.disclosed@example.com> wrote in message news:1u2dnb84TP0gFjbVnZ2dnUVZ_qXinZ2d@earthlink.co m...
> >> An unknown poster wrote, in part:
> >>> Can someone explain what's different about these two Crucial memory
> >>> sodimm modules:
> >>>
> >>> CT32M64S4W7E
> >>>
> >>> CT32M64S8W7E
> >> _____
> >>
> >> Perhaps you are thinking of the guide for reading Micron memory chip
> >> designations (Crucial is a division of Micron.)
> >
> > CT=Crucial Technology
> >
> >> From the Crucial website:
> >>
> >> 256MB
> >> CT32M64S8W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz .
> >> 3.3V . 32Meg x 64 .
> >>
> >> 256MB
> >> CT32M64S4W7E 144-pin SODIMM SDRAM, PC133 . CL=2 . Non-parity . 133MHz .
> >> 3.3V . 32Meg x 64 .
> >>
> >> Seem to be identical specs.
> >>
> >> Phil Weldon
> >
> > Thanks Phil, but I think I finally stumbled on the answer, or at least half
> > the answer.
> >
> > S4/S8 refers to chip density:
> >
> > S4 = 128Mbit chips, 16MB x 16 chips = 256MB
> > S8 = 256Mbit chips, 32MB x 8 chips = 256MB
> >
> > Apparently Crucial had so many compatibility issues with the 256Mbit
> > chips ("high density") they stopped selling them. Or at least I think
> > that's the case (that's the half I'm not sure of).
> >
> >
>
> The S8 is reviewed here.
>
> http://www.newegg.com/Product/Produc...82E16820148027
>
> There aren't many reviews for the S4, which is a deactivated item at Newegg.
>
> http://www.newegg.com/Product/Produc...82E16820148026
>
> Paul
Paul, one of the reviews for the S8 claims it didn't work in his BX
chipset notebook. That's the incompatibility I was referring to.
Also, Crucial's online memory selector program no longer has any
S8 parts, but I did see three S4's.
How to read Crucial memory part numbers? 
Linear Mode
