Lesson 6 Chapter 3 - Expansion Buses and Cards Flashcards
What is an expansion bus?
Along with
Along with accompanying wires and support chips, its a pathway that ferries data to and from the devices plugged into the expansion slots
Modern motherboards offer two types of expansion slots, what are they?
- PCI
- PCIe
What does PCI stand for? Released when?
Peripheral Component Interconnect
Released early 1990s
What benefit did introducing PCIs (by Intel) provide compared to previous versions? (3)
- Faster
- Wider
- More flexible
PCI devices are self-configuring. What does this mean?
PCI devices don’t need to have jumpers configured on the expansion card to use certain system resources resources
What is Plug and Play (PnP)?
Plug and Play is the standard that allows expansion cards to be plugged in and automatically self configure
What’s the difference between a PCI and PCIe expansion bus?
PCI - Uses parallel connections, data travels on many different wires (1 bit=1 wire) to the same destination and arrives at different times. Causes slowdown.
PCIe - Uses a serial connection, is faster, bits of data travel together
How many bytes is a gigabyte?
1 billion bytes = 1 GB
How much is a gigatransfer per second? (GTps)
1 billion transfers per second
Each newer version of PCIe has increased the ….?
lane speed
Define what a lane is
A lane is a pair of wires a PCIe card uses to transfer data to a device (one sends, one receives)
How many lanes can each point-to-point connection use?
x1, x2, x4, x8, x12, x16
The number of lanes a slot uses is indicated how?
x “by”
How do you pronounce “x” as in x1 or x8?
x = by 8, by 1
What’s the most common PCIe slot version? What’s it commonly used for?
The most common PCIe slot version is the x16, it’s commonly used for video cards
What is the most common general-purpose PCIe slot version?
x1