Are these two memory modules the same thing, pls? 1

[newyorkny]

Thank you for your guidance.

First ) 200pin DDR PC2100 CL2.5 512MB SODIMM 64x64

Second ) KINGSTON 512MB PC2100 CL2.5 DDR

PS: what does cl2.5 mean?

Thanks again.

 

[tf1]

Possibly!

The first is defintely a laptop memory stick: SODIMM means Small Outline Dual Inline Memory Module. And SODIMMs have 200-pins.

The second module doesn't have sufficient information to know what it is: it may be either the same (SODIMM) or it may be standard 168-pin PC memory. They are mutually incompatible.

CL stands for CAS Latency (CAS being Column Access Strobe). There's no simple explanation of this term other than to say that it is a ratio of CAS versus the clock cycle: the lower the latency, the better the memory. For a full explanation, see:

http://www.dewassoc.com/performance/memory/cas_latency.htm

There are two good manufacturer's sites for identifying the memory that you need:

http://www.kingston.com

and

http://www.crusial.com

Regards: tf1

 

[newyorkny]

Thanks. I will follow up on that. Very instructional.

NY

 

[newyorkny]

Would the below part be compatible with the first memory I outlined, above? (above)

Thanks. Product follows (I do not see SODIMM mentioned!):


Corsair 512MB DDR266 PC2100 Value Select Memory Retail *** Free 2nd Day ***
Lifetime Warranty
Manufacturer: CORSAIR
Manufacturer SKU: VS512MB266
Our Price: $79.90
Quantity Limit 20 Per customer




Features and Benefits Back to Top

* Retail
* 512MB PC2100 64Mx64 Non-ECC 184 DIMM Unbuffered CAS2.5
* Industry standard PC2100 DIMM Format
* 100 Percent Tested
* Industry-Standard Design
o Four and/or six layer printed circuit board
o Gold Leads, five microinches minimum plating
* Qualified by Corsair for use in desktop applications
* Low-Cost, High Quality SDRAMs
* Industry Standard Configurations
* Pin-compatible with all PC2100 modules

 

[tf1]

Unfortunately, I made a couple of slight errors in my previous information. The older SDRAM memory modules were 168 pins, the newer DDR memory modules for PCs are 184 pins. The other error was with Crucial's URL which is

http://www.crucial.com

The Corsair VS512MB266 memory that you have found above is 184 pin, standard PC memory and not SODIMM. (I assume you are looking for memory for a laptop and not a desktop.)

If you are looking particularly at Corsair SODIMMs, you need VS512SDS266 for PC2100 64x64 SODIMM.


Regards: tf1

 

[newyorkny]

Thanks, TF1.

I am really shamefully behind in my knowlege of this subject.

Not looking particularly at any one brand, actually. My pickle is that I went with eBay cheepy memory that went south after about six months, and my laptop is getting long in the tooth for expensive upgrades.

I'll never buy no-name brand, unwarranted product again, but on the other hand, crucial and kingston are anything up to 40% more than the bargain bin retailers. So, I'm picking through the latter first.

I expect I will find a good module presently!

Thanks again. NY

 

[tf1]

There are always pages of memory being sold on eBay: I'm sure you'll find a bargain there.



Regards: tf1