~AlicGinnis~ said:
Hi,
A neighbor has a Dell Latitude C600 laptop with PC100 memory. She can buy a
pair of PC133's, 256MB each, for $30 which is a pretty good price.
Will the pc133's work or does she have to stick with pc100? In regular
motherboards I know pc133 will somehow clock itself down to pc100 but i'm
hesitant to tell here to go ahead because its a Dell laptop.
Thanks in advance for any insight.
al
They offer PC133 products for that laptop here. Now, the weird part, is
other retailers, offering CT484624 for sale, claim it consists of two 128MB modules.
Crucial gives the impression here, that the product is a single 256MB module.
http://www.crucial.com/store/listparts.aspx?model=Latitude C600 Series
According to this, the C600 has the Intel 440BX chipset. One thing to know
about that, is "low density" modules should be used with the 440BX. With
desktop 440BX motherboards (I have one here), if you install an 8 chip 256MB
DIMM, only half the memory will be detected. If you install a 16 chip
(double sided) DIMM, then the entire 256MB will be detected by 440BX.
The difference is, the 8 chip module would use (8) 32Mx8 chips, while
the 16 chip module would use (16) 16Mx8 chips. The 440BX has enough
memory bus address bits, to properly address a 16Mx8 chip, which is
why the 256MB low density module works.
http://en.wikipedia.org/wiki/Dell_Latitude
Since there are no reliable pictures of the CT484624 product available,
it is pretty hard to tell you what to look for in a competing product.
In any case, if your neighbor buys the product, and when a single stick
of the 256MB product is plugged in, only 128MB is detected, then you'd
know there was a "density problem".
When I look up the C600 on the Kingston site, this is what I find.
http://www.ec.kingston.com/ecom/configurator_new/modelsinfo.asp?SysID=9972
The KTD-INSP7500/256 is their 256MB offering for the C600.
The picture here looks more realistic for a low density module. I can
see 8 chips on one side of the module in the picture. Meaning it is
possible the product has a total of 16 chips.
http://www.bizrate.com/ram_memoryupgrades/kingston-technology-256-mb-sdram--pid5223215/
http://accessories.us.dell.com/sna/...4&cs=04&c=us&l=en&dgc=SS&cid=30098&lid=674101
Picture of KTD-INSP7500/256 on the Dell site.
http://snpi.dell.com/sna/images/products/large/297038-4.jpg
There is a tendency in the memory retail industry, to slap any old
picture into advertisements, meaning the pictures are usually worthless
for technical analysis. I would expect if the modules your neighbor is
buying, are like the picture in the previous link, they should be
OK.
Paul
