cannot find NVRAM in shops

June 4, 2005 at 06:04:04
Specs: windows XP pro, Intel Pentium3 - 733MHz /

Hi

My system got NVRAM memory (I got 256+128+128Mb)and I want to buy more RAM nemory (let's say 256Mb). The problem is I cannot find NVRAM. I can find only SDRAM, DDRAM, RDRAM etc.
Can anybody tell me if the NVRAM has another name? so I can buy the right one.

Thanks

David


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#1
June 4, 2005 at 06:33:18

NVRAM stand for Non-volatile RAM and no, you wont find any on sale because your computer already has all the NVRAM it will ever need.

NVRAM is also know as CMOS RAM. It is a the small amount of memory usually around 256 Kbts, (thats kilo bytes, not mega bytes) that the system stores it's setting in like your disk configuration, video, how much ram you have etc. This information is read by the BIOS at boot up and is never used again.

It is called NVRAM because it retains its setting when the computer is turned of unlike normal RAM thats loses all its contents when power is removed. Power is maintained by a small NiCad battery on the motherboard - also called the CMOS battery. This usually last about five years.

CMOS stands for Complementary Metal Oxide Semiconductor. It is a type of RAM that has very low power requirements, but is relatively slow compared to SDRAM. As it is only read once at boot up and there is not much of it, this is not a problem

Your computers main memory will be one of the others you mention, if it is a relatively new motherboard, most likely DDRAM.

Stuart


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#2
June 4, 2005 at 06:52:11

One other thing. Download and run Everest Home edition.

http://www.lavalys.com/products/overview.php?pid=1&lang=en

It is free and will tell you exactly what kind of memory you have and how much and many other things about your computer.

Stuart


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#3
June 4, 2005 at 13:06:23

At a guess I'd say you're going to have a fair bit of bother finding the RAM you want. That being PC133 SDRAM if your specs are right.

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#4
June 4, 2005 at 13:49:46

SDRAM still available if you know where to look.

http://www.crucial.com/uk/store/listmodule.asp?family=SDRAM&tabid=SDRAM%2C+PC133

or

http://www.crucial.com/store/partspecs.asp?imodule=CT32M64S4D8E&WSMD=CT32M64S4D8E&WSPN=CT32M64S4D8E

if you are in the USA.

It may be a little more expensive, but that's because the demand is not there anymore.

BTW. The battery in the computer is a Lithium battery, not Ni Cad. Ni Cad batteries are rechargeable, Lithium batteries are not.

Stuart


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