Used or recycled computers will sometimes be sold without RAM, as the RAM is one of the few parts that actually retains some value.
Generally the big-name manufacturers are reluctant to offer systems with no RAM because of the warranty implications of end-users adding third-party RAM.
OEM sellers and online retailers such as tigerdirect or newegg often have bare-bones systems available without RAM, hard disk, or anything, and then will let you add what you DO want via their website.
That may be the best way for you to go.
most computers have between 1 and 4 gigabytes of RAM
Depends which model you are looking at, as with any manufacturer. The RAM will be shown in the specs for each model.
The communication system for the computers has failed. Could be any of the computers or the wiring in between.
The most that any computer can offer is 4 gigabytes of RAM. No motherboards support any RAM more than 4Gig.
"Compaq Presario" is the name of a line of computers. It does not refer to any specific model. Without further information, no advice on whether or not it is compatible with your computer can be given.
ROM (Read-only memory) is storage used in the older computers. It can not be modified or changed in any way. It is mainly used to distribute firmware. RAM (Random-access memory) is a form of storage data, which most modern computers use. RAM can be bought in strips and slot into computers circuit boards.
You did have to install Dimms in pairs for older computers which used RDRAMs, but computers nowadys use SDRAMs. So, you can mix combination of RAMs of different sizes and speeds without any problem.
No, it depends on the computer. DDR2 RAM is only for newer computers (Core 2, &tc.)
Kingston is a brand of RAM rather than a type, and they manufacture nearly any kind of RAM that a computer made in the past decade would need.
Installing RAM in matched pairs speeds up the performance of certain applications. When it's a requirement, as in computers with the Mac G5 chip(s), the computer will not function properly without matched pairs of RAM chips.
Any Ram can tow about 18.000 pounds without any trouble...It;s a RAM
If the motherboard on your computer has some spare slots in it, you can buy RAM from most electronic hardware stores and either pay them to install it or install it yourself. If your motherboard DOESN'T have any spare slots then simply replace the current RAM with higher one. Make sure your purchase RAM compatible with your computer. Most computers today use DDR2 RAM while older computers (such as mine) use DDR RAM.