3.3 RAM Types Flashcards
What does ROM stand for?
ROM = Read Only Memory
What does RAM stand for?
RAM = Random Access Memory
What does PROM stand for?
PROM = Programmable Read Only Memory
What does EPROM stand for?
EPROM = Erasable Programmable Read Only Memory
Explain the difference between Volatile and Non-Volatile memory.
Volatile memory is powered memory. It needs continuous power to store. Non-volatile memory means if you write the data and the chip loses power, the memory stays when you re-power it again. Examples of nonvolatile memory are CD’s, DVD’s, floppy disks, etc. Storage devices.
Which bus travels FROM the CPU TO the RAM?
The FRONT SIDE BUS goes from CPU to RAM. It is a 64 bit bus. 64 wires there so it simultaneously sends 64 bits of information. And receiving.
Explain what PC3 10667 is.
PC3 10667 is a Speed transfer rating. 10667 is the number representing megabytes. The MHz speed of the ram times 8 bytes per hertz. (If the RAM is 1,333 MHz, times that number by 8 to get the speed transfer rating).
What is the speed transfer rating of a DDR 4 3200 stick of RAM?
If you have a DDR4 3200 stick of RAM, you take the 3200 (megahertz) and times it by 8 bytes (8 bytes in each hertz), that gives you the speed transfer rate of 25600 (megabytes).
What is the MHz speed of PC4 36800?
DDR4 4600. To find the MHz speed, divide 36800 (megabytes) by 8 (8 bytes per hertz).
Can you have two different types of RAM sticks in a computer?
NO! Having 2 ram sticks that are the same are important, and as identical as physically possible. If they are not the same, you will get instabilities.
Explain Dual Channel Ram.
2 sticks installed on the same color coded channel. If both IDENTICAL sticks of ram are installed in the same color coded channel, not only do you get the space of say 16gb of ram, but instead of that 16gb of ram going down one highway, that can now travel down 2 highways. If I am in a car on a highway, adding another lane doesn’t change how fast I can go, but it allows more cars to travel. In the same way, running in duel channel mode allows for MORE information to pass into the CPU at the same speeds. When you run in duel channel, instead of 16 gigs of ram running down one address bus, instead it is going to run down 2 data buses. More information at the same speeds. So instead of seeing 1 tree, you can see 2 trees, etc etc.
What do you need to run Duel Channel Ram?
The only thing you need to do to run duel channel ram is to have 2 ram sticks that are identical, in the same slot channel on the mother board. (blue and blue or red and red). That will give you access to 2 data buses and not just one.
How can you determine the type of RAM you need?
The processor specifications will tell you what RAM you need to have.
Can you determine the type of RAM you need by looking at your motherboards specifications?
NO! Your motherboard specifications will tell you what type of RAM it can handle, and not what type of RAM you actually NEED.
What exactly does RAM do, and why is more RAM important in some setups?
The amount of ram determines the total amount of space it is able to handle at one time for currently open programs and data. If the ram gets maxed out and starts over writing itself, it could cause the computer to reboot.
