PCI Express 2.0: Scalable Interconnect Technology, TNG - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > New Systems | Building and Buying
Closed Thread
Thread Tools Display Modes
Old 01-21-2008, 07:25 PM   #1 (permalink)
Ultra Techie
DawnOfDoom's Avatar
Join Date: Jan 2007
Location: North Carolina
Posts: 998
Send a message via MSN to DawnOfDoom Send a message via Yahoo to DawnOfDoom
Default PCI Express 2.0: Scalable Interconnect Technology, TNG

Found @ AnandTech: PCI Express 2.0: Scalable Interconnect Technology, TNG

It should come as no surprise to anyone that the gaming industry is quite capable of forcefully driving the need for innovation - often found in the form of faster processors, more powerful 3D graphics adapters, and improvements in data exchange protocols. One such specification, PCI Express (PCI-E), was prompted for development when system engineers and integrators acknowledged that the interconnect demands of emerging video, communications, and computing platforms far exceeded the capabilities of traditional parallel buses, such as PCI. Although PCI Express is really nothing more than a general purpose, scalable I/O signaling interconnect, it has quickly become the platform of choice for industry segments that desperately need the high-performance, low latency, scalable bandwidth that it consistently provides. Graphics card makers have been using PCI Express technology for more than a generation now and today's choice of PCI Express-enabled devices is becoming larger by the minute.

Unlike older parallel bus technologies such as PCI, PCI Express adopts a point-to-point serial interface. This architecture provides dedicated host to client bandwidth, meaning each installed device no longer must contend for shared bus resources. This also removes a lot of the signal integrity issues such as reflections and excessive signal jitter associated with longer, multi-drop buses. Cleaner signals mean tighter timing tolerances, reduced latencies, and faster, more efficient data transfers. To the gamer, of course, only one thing really matters: more frames per second and better image quality. While PCI-E doesn't directly provide for that relative to AGP, it has enabled some improvements along with the return of multi-card graphics solutions like SLI and CrossFire. For these reasons, it is no wonder that PCI Express is the interconnect of choice on modern motherboards.

The typical Intel chipset solution provides a host of PCI Express resources. Connections to the Memory Controller Hub (MCH) are usually reserved for devices that need direct, unfettered, low-latency access to the main system memory while those that are much less sensitive to data transfer latency effects connect to the I/O Controller Hub (ICH). This approach ensures that the correct priority is given to those components that need it the most (usually graphics controllers). When it comes to Intel chipsets, a large portion of the market segment distinction comes from the type and quantity of these available connections. Later we will look at some of these differences and discuss some of the performance implications associated with each.

In late 2006, PCI-SIG (Special Interest Group) released the 2.0 update to the PCI Express Base Specification to members for review and comment. Along with the introduction of a host of new features comes the most predominant change of all, an increase in the signaling rate to 5.0GT/s (double that of the PCI Express 1.x specification of 2.5GT/s). This increase effectively doubles the maximum theoretical bandwidth of PCI Express and creates the additional data throughput capabilities that tomorrow's demanding systems will need for peak performance.

Both ATI/AMD and NVIDIA have released their first generation of PCI Express 2.0 capable video cards. ATI has the complete Radeon HD 3000 series while NVIDIA offers the new 8800 GT as well as a 512MB version of the 8800 GTS (G92) built using 65nm node technology. Last month we took an in-depth look at these new NVIDIA cards - our testing, comments, and conclusion can be found here. We reviewed the ATI models a little earlier in November - the results are interesting indeed, especially when compared to NVIDIA's newest offerings. Take a moment to review these cards if you have not already and then come read about PCI Express 2.0, what it offers, what has changed, and what it means to you.

Originally Posted by Oreo View Post
That was an epic forum speech, Doom is tech-forums very own Martin Luther King.
Don't Tell any one but I know who Crunch is...

I Do accept support requests via PM, MSN, and e-mail

If I have been helpful to you in any way please click the scale under my name
DawnOfDoom is offline  
Old 01-22-2008, 01:16 AM   #2 (permalink)
Monster Techie
alexsabree's Avatar
Join Date: Feb 2006
Location: United States, Arkansas
Posts: 1,845
Default Re: PCI Express 2.0: Scalable Interconnect Technology, TNG

So basically all that is saying that the new pci-x 2.0 has more bandwidth?

alexsabree is offline  
Old 01-22-2008, 01:18 AM   #3 (permalink)
Join Date: Aug 2006
Posts: 1,732
Default Re: PCI Express 2.0: Scalable Interconnect Technology, TNG

Didnt we know this like last year?
TheEnd187 is offline  
Old 01-22-2008, 01:36 AM   #4 (permalink)
M.C. Etcher
Grievearz's Avatar
Join Date: Sep 2007
Location: Gainesville FL
Posts: 321
Send a message via AIM to Grievearz
Default Re: PCI Express 2.0: Scalable Interconnect Technology, TNG

Breaking News! PCI-E 2.0 will be faster than PCI-E 1.1!

Also, Octo-Cores rumored to be more than two times as fast as Dual-Cores!

Maybe I'm a Lion...
Grievearz is offline  
Old 01-22-2008, 01:41 AM   #5 (permalink)
Monster Techie
alexsabree's Avatar
Join Date: Feb 2006
Location: United States, Arkansas
Posts: 1,845
Default Re: PCI Express 2.0: Scalable Interconnect Technology, TNG

alexsabree is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
PCI Express slot no longer responding to Hardware - Help please! pushlatency Hardware Repairs and Troubleshooting 5 12-03-2007 08:57 PM
Nvidia 7600GT 256MB DDR3 PCI Express 16X ? Quake_City General Gaming 26 10-01-2007 01:40 PM

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 01:03 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.