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  PCI Express Reference Guide (ver 2.1)
 
 

So what do I get?

The biggest benefit is the speed of PCI-Express. The basic speed of 2.5 Giga transfers per second per channel direction gives each channel a 200MB per second in data capacity (That's 100MB per second per pin!!). This is almost twice that of current PCI.

PCI-Express Performance

(image courtesy of Intel)

The point-to-point design also means that many wild and wacky system designs are possible. PCI-Express connections can be made with connectors and cables due to the low signal count. So your computer base station may be distributed all over a room like a great spiders web.

How much will it cost?

One of the main goals of the design of PCI-Express was to achieve a low cost solution capable of high volume application. In other words, the add-ins cards can become simpler with fewer pins, which means that unit costs can be reduced. So today's modem will get smaller and cheaper but it also gives future devices room to grow. So, more 'bang for your buck'.

When can I get it?

In order to get motherboards with PCI Express support, they will have to incorporate one of the following chipsets:

CPU Chipsets
Maker
Chipset
Socket
Availability*
IntelIntel 925x
775
Now
Intel 915G
775
Now
Intel 915GV
775
??
Intel 915GL
775
(see note)
Intel 915P
775
Now
Intel 910GL
775/478
??
Intel 925XE

775

??

VIAK8T890
939/940/754
Now
K8T890 Pro (DualGFX)
939/940/754
11/04
PT894
478/775
12/04
PT894 Pro (DualGFX)
478/775
Q1/05
PT880 Pro (AGP, PCI-E)
478/775
Q1/05
NVIDIAnForce4 Ultra
939
11/04
nForce4 SLI
939
11/04
nForce 4
939/754
11/04
ATIExpress 200
939/754
??

Express 200P

939/754
??
ULi (ALi)South bridge

Note: While the 915GL is listed on this page, there is no spec sheet for it.

While Intel was first to market with PCI Express chipsets, the wait is almost over for AMD owners. The K8T890-based boards should be showing up soon. The nForce4 and Express 200 chipsets were recently announced.

Below is a list of the currently announced PCI Express videocards.

Video Card GPU/Chips
CompanyGPU
Availability*
ATIX800 XT
Now

X700 PRO
???

X700
???

X600 XT
Now

X600 PRO
Now

X300
Now

X300 SE
Now

FireGL V3100
Now
NVIDIA6800 (select versions)
???
6600 GT
Now
6600
Now
PCX5900
Now
PCX5750
Now
PCX5300
Now
Quadro FX 4400
???
Quadro FX 4400G
???
Quadro FX 3400
Now
Quadro FX 1400
???
Quadro FX 1300
Now
Quadro FX 540
Now
Quadro FX 330
Now
Quadro NVS 280 (select versions)
Now
XGIVolari Duo
???
Volari V8 Ultra
???
Volari V8
???
Volari V5
???
Volari V3 XT
???
S3GammaChrome
???
3DLabsWildcat Realizm 800
Now

Comparing the prices of some of the ATI cards, the PCI Express versions were slightly more expensive than their AGP brethren.

Misc
CompanyComponent
Availability
BroadcomBCM5751 Gigabyte Ethernet Controller (Desktop)
Now

BCM5721 Gigabit Ethernet Controller (Servers)
Now

BCM5751M Gigabit Ethernet Controller (Mobile)
Now



PCI Express components other than chipsets and videocards are starting to show up. Above is a list of a few ethernet controllers.

Previous Page    Next Page
Table of Contents
Page 1: Introduction, Background and What is it
Page 2: What do I get, Cost and when can I get it
Page 3: PCMCIA, FAQ, Summary and Resources

 
      Posted by: , November 11, 2004, 6:00 pm  

 
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