Work on PCI began at Intel's Architecture Development Lab (IAL) c. 1990.
A team of primarily IAL engineers defined the architecture and developed a proof of concept chipset and platform (Saturn) partnering with teams in the company's desktop PC systems and core logic product organizations.

PCI was immediately put to use in servers, replacing MCA and EISA as the server expansion bus of choice.
In mainstream PCs, PCI was slower to replace VESA Local Bus (VLB), and did not gain significant market penetration until late 1994 in second-generation Pentium PCs.
By 1996, VLB was all but extinct, and manufacturers had adopted PCI even for 486 computers.
EISA continued to be used alongside PCI through 2000.
Apple Computer adopted PCI for professional Power Macintosh computers (replacing NuBus) in mid-1995, and the consumer Performa product line (replacing LC PDS) in mid-1996.

The 64-bit version of plain PCI remained rare in practice though, although it was used for example by all (post-iMac) G3 and G4 Power Macintosh computers.

Later revisions of PCI added new features and performance improvements, including a 66 MHz 3.3 V standard and 133 MHz PCI-X, and the adaptation of PCI signaling to other form factors.
Both PCI-X 1.0b and PCI-X 2.0 are backward compatible with some PCI standards.
These revisions were used on server hardware but consumer PC hardware remained nearly all 32 bit, 33 MHz and 5 volt.

The PCI-SIG introduced the serial PCI Express in c. 2004.
Since then, motherboard manufacturers have included progressively fewer PCI slots in favor of the new standard.
Many new motherboards do not provide PCI slots at all, as of late 2013.
Work on PCI began at Intel's Architecture Development Lab (IAL) c. 1990. A team of primarily IAL engineers defined the architecture and developed a proof of concept chipset and platform (Saturn) partnering with teams in the company's desktop PC systems and core logic product organizations.
PCI was immediately put to use in servers, replacing MCA and EISA as the server expansion bus of choice. In mainstream PCs, PCI was slower to replace VESA Local Bus (VLB), and did not gain significant market penetration until late 1994 in second-generation Pentium PCs. By 1996, VLB was all but extinct, and manufacturers had adopted PCI even for 486 computers. EISA continued to be used alongside PCI through 2000. Apple Computer adopted PCI for professional Power Macintosh computers (replacing NuBus) in mid-1995, and the consumer Performa product line (replacing LC PDS) in mid-1996.
The 64-bit version of plain PCI remained rare in practice though, although it was used for example by all (post-iMac) G3 and G4 Power Macintosh computers.
Later revisions of PCI added new features and performance improvements, including a 66 MHz 3.3 V standard and 133 MHz PCI-X, and the adaptation of PCI signaling to other form factors. Both PCI-X 1.0b and PCI-X 2.0 are backward compatible with some PCI standards. These revisions were used on server hardware but consumer PC hardware remained nearly all 32 bit, 33 MHz and 5 volt.
The PCI-SIG introduced the serial PCI Express in c. 2004. Since then, motherboard manufacturers have included progressively fewer PCI slots in favor of the new standard. Many new motherboards do not provide PCI slots at all, as of late 2013.
Peripheral Component Interconnect