Feeds

PCI organisation confirms PCIe 3.0 delay

Six-month setback to ensure full backwards compatibility

Security for virtualized datacentres

The next version of the PCI Express bus standard, 3.0, won't appear until 2010 and not this year as originally anticipated.

Publication of the final version of the specification inevitably leads the appearance of devices that incorporate the standard, so the delay pushes the release of PCIe 3.0-compliant kit out from 2010 to 2011.

The delay was confirmed by PCI Special Interest Group President Al Yanes. Speaking to PC Magazine, he said the delay was necessary to ensure that the complex new standard retains backwards compatibility with PCIe 1.0 and PCIe 2.0.

PCIe 3.0 ups the bus' clock to 8GHz. It also ups the previous version's data-encoding schemes fro 8/10-bit to 128/130-bit. One upshot of changing the encoding scheme is that the cost to data transfer is reduced from 20 per cent to around 1-2 per cent, ensuring more real data is sent at any given clock cycle.

That means PCIe 3.0 will have an effective bandwidth of 7.99Gb/s, compared to the 5Gb/s-rate PCIe 2.0's effective bandwidth of 4Gb/s. That's a doubling of bandwidth without the need to aim for 10Gb/s with all the greater signalling issues that 10GHz brings over 8GHz.

The downside is the extra work Yanes and co. think necessary to ensure backward compatibility and the six-months-or-so delay to the standard's release. ®

Intelligent flash storage arrays

More from The Register

next story
Tim Cook: The classic iPod HAD to DIE, and this is WHY
Apple, er, couldn’t get the parts for HDD models
Google Glassholes are UNDATEABLE – HP exec
You need an emotional connection, says touchy-feely MD... We can do that
Caterham Seven 160 review: The Raspberry Pi of motoring
Back to driving's basics with a joyously legal high
Back to the ... drawing board: 'Hoverboard' will disappoint Marty McFly wannabes
Buzzing board (and some future apps) leave a lot to be desired
ICO warns UK broadcasters over filming using drones
Must comply with data protection rules, m'kay?
prev story

Whitepapers

Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
New hybrid storage solutions
Tackling data challenges through emerging hybrid storage solutions that enable optimum database performance whilst managing costs and increasingly large data stores.
Website security in corporate America
Find out how you rank among other IT managers testing your website's vulnerabilities.