PCI Express

Introduced: 2004-06-21

Description: PC interconnect formerly known as 3GIO. Evolved from PCI and the physical interface of InfiniBand to a serial high bandwidth interface which will be used both as a PCI / AGP replacement and for chip to chip communications. Runs at 2.5 GHz and 0.8 V today, but will move to 5 GHz in PCI Express 2 in 2007-2008, and later to 10 GHz. Provides independent channels for each direction. Multiple bus widths are available:

  • 1bit, x1: 250 MB/s (312 MB/s raw), 8 pins. PCI replacement
  • 4bit, x4: 1 GB/s, 20 pins
  • 8bit, x8: 2 GB/s, 40 pins
  • 12bit, x12: ? pins
  • 16bit, x16: 4 GB/s, 80 pins. Replacement for AGP and connects to the North Bridge
  • 32bit, x32: ? pins

From PCISIG:
"PCI Express currently runs at 2.5Gtps, or 250MBps per lane in each direction, providing a total bandwidth of 16GBps in a 32-lane configuration. Future frequency increases will scale up total bandwidth to the limits of copper and significantly beyond that via other media without impacting any layers above the Physical Layer in the protocol stack."

Will also spawn a successor to the PCMCIA (PC-Card, CardBus) slot, 3GIO-M, Newcard or ExpressCard, which includes both PCI Express and USB 2.0 interfaces.

Type: Communications [Roadmap] [Timeline]

State: Released

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News clips relating to PCI Express

Showing 1-25 from 63 results. Page: [1 2 3 ]

2005-11-23 PCI Express Battles PCI-X: After comparing the latest SATA II RAID cards, we wanted to know whether PCI Express can actually outperform PCI-X. We used HighPoint's RocketRAID 2220 and 2320 models to help us find out. Tom's Hardware [rm]

2005-08-29 Forget PCI Express, it's time for PCI Express 2 The Inquirer [rm]

2004-12-17 PCI Express to double bandwidth The Inquirer [rm]

2004-12-16 PCI Express 2.0 to double bandwidth The Register [rm]

2004-12-10 AMD Tips Next-Generation Microprocessors Features: AMD Says Multi-Core, DDR3, HyperTransport 3, PCI Express Gen 2 Future Xbit Labs [rm]

2004-11-10 Non-graphics PCI Express products start to appear The Inquirer [rm]

2004-09-17 Chipset wars hot up with Longhorn approaching The Inquirer [rm]

2004-09-10 PCI Express SIG reveal future specifications: PCIe 1.1 out The Inquirer [rm]

2004-06-21 LGA775: New CPUs and Chipsets Xbit Labs [rm]

2004-06-20 Intel Stakes Its Vision of the PC Future with 775 Launch Tom's Hardware [rm]

2004-06-15 3Dlabs Unleashes Wildcat Realizm 800 PCI Express-Based Graphics Accelerator For Unrivalled Professional Performance: Dual-VPUs Achieve Over 700 GFLOPS and Deliver the Full Potential of PCI Express for Unprecedented Design Productivity 3Dlabs [rm]

2004-06-15 3Dlabs Wildcat Realizm 800 3Dlabs [rm]

2004-06-01 ECS makes AGP/PCI-E Grantsdale P motherboard The Inquirer [rm]

2004-05-29 Radeon X800XT is a 500/1000 MHz card: The one to fight Geforce 6800GT The Inquirer [rm]

2004-05-27 Nvidia confirms Intel PCI Express relationship The Inquirer [rm]

2004-05-17 NVIDIA and Ten Leading Notebook Manufacturers Launch Consistent Graphics Interface for PCI Express Notebooks Nvidia [rm]

2004-05-05 Athlon XP will have no PCI Express support The Inquirer [rm]

2004-01-05 PCs to change radically in 2004 The Inquirer [rm]

2004-01-04 Fully fledged Intel Prescott could soak 150 watts The Inquirer [rm]

2003-12-24 Man goes to toilet, snaps ATI PCI Express The Inquirer [rm]

2003-11-13 Intel Revises Centrino Plans: Adjust CPU Schedules, Postpones New Chipsets: Revolution Delayed Xbit Labs [rm]

2003-11-13 Intel Centrino 2 to offer 533MHz FSB - report The Register [rm]

2003-11-13 More details emerge of Intel Prescott's LGA 775 The Inquirer [rm]

2003-10-16 Intel LGA775: From 2.80GHz to 3.80GHz: Be Ready for a Great Journey! Xbit Labs [rm]

2003-09-27 ExpressCard: The Official Standard for PC Modular Expansion for Desktop and Mobile Systems ExpressCard.org [rm]

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