Hardware Secrets
Home | Camera | Case | CE | Cooling | CPU | Input | Memory | Mobile | Motherboard | Networking | Power | Storage | Video | Other
First Look
Gabriel’s Blog
Main Menu
About Us
Awarded Products
Manufacturer Finder
RSS Feed
Test Your Skills
Subscribe today!

Home » Dictionary » Bus

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Numeric

Author: Gabriel Torres Last Updated: January 10, 2006
Category: Bus

Peripheral Component Interconnect

PCI is a motherboard slot type created by Intel for installing peripheral boards on the PCI. Nowadays is the most popular slot type.

Standard PCI slot works at 33 MHz transferring 32 bits per clock cycle, thus obtaining a maximum theoretical transfer rate of 132 MB/s (33 MHz x 32 bits / 8).

Other PCI standards with higher performance were created but with low market acceptance: 33 MHz x 64 bits (264 MB/s), 66 MHz x 32 bits (264 MB/s) and 66 MHz x 64 bits (528 MB/s).

Server motherboards usually have, besides PCI slots, PCI-X slots, which are high-performance PCI slots using bigger connectors, however.

A new kind of PCI slot was recently launched, called PCI Express. PCI Express works with serial communication (standard PCI slots work with parallel communication) and its basic transfer rate is of 250 MB/s for ”1x“ slots. ”4x“ slots work at 2,000 MB/s and ”16x“ slots work at 4,000 MB/s. Each speed grade (1x, 4x, 16x) uses a different connector type, see Figure 1. The most common PCI Express slots are 16x, used by video cards, and 1x, used by other PCI Express cards.

click to enlarge
Figure 1: PCI slots on a motherboard.

Related Terms:

Related Links:

Print Version | Send to Friend | Bookmark this Term

There are 369 terms in our database.

RSSLatest Content
A10-6800K vs. Core i3-4150 CPU Review
March 25, 2015 - 3:15 AM
Core i7-5960X CPU Review
February 24, 2015 - 3:00 AM
ASUS ZenFone 6 Smartphone Review
January 23, 2015 - 4:15 AM
WD My Cloud 3 TB Network HDD Review
January 19, 2015 - 4:30 AM
AMD Athlon 5150 CPU Review
January 12, 2015 - 5:30 AM
Pentium J2900 CPU Review
January 7, 2015 - 5:00 AM
ASRock Q2900M Motherboard
January 6, 2015 - 2:26 AM

2004-15 Clube do Hardware, all rights reserved.
Advertising | Legal Information | Privacy Policy
All times are Pacific Standard Time (PST, GMT -08:00)