The Ram Chips on a Laptop are situated Normally under the Removable cover on the bottom of the Laptop. The Ram cards are normally Green and have little black Slightly raised Squares on them the Chips themselves are often rectangual.
The Ram Cards in a Desktop computer are situated conected to the large Green computer chip and normally (as you look at it with the tower upright) are upright and at a 90 Degree angle to the main Chip Board and considerably longer than that of those in a laptop but the description is Genrally same.
DDR2 RAM is slightly smaller and has square chips. DDR1 RAM has rectangular chips.
short answer : cache chip is more expensive than ram
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Memory Modules
RAM is made out of Memory chips which contains the memory
Computer chips are I.C.s (Integrated Circuits) exaples of which are Memory (RAM Chips) CPU Processor, Video Chips.
A 1 gigabyte RAM can extend by buying RAM upgrade chips, and inserting them into your computer.
RAM chips.
It depends on the RAM chip. Some are 1GB, 2GB, 4GB, and 8GB.
Most computers have space for 2 ram chips so this includes your 512 and 1 gb ( it should work as long as it is the correct chips for your computer)
CMOS
Installing RAM in pairs can save time and money.