Somebody tell me more about this new "pci express"

[webe3]

I read about this in another post and looked it up on the net and the results are looking promising! It says that it is backwards compatable with standard pci software we use now? How is this possible and still able to achive the speeds it says it will give? I was going to upgrade my system to a new motherboard (ASUS A7N8X Deluxe), but now after reading this, I guess I will wait and see how this turns out! No sense in getting a MB that is going to be ouitdated in a year or less! Espically if the new slots are for newer video cards that use the pci express slot!

[amd_man2005]

Heres alink I found on a Google search........It seems to have a lot of info on it http://www.extremetech.com/article2/...,522345,00.asp

[weta]

Key features

Compatible with current PCI enumeration and software device driver model
Layered architecture enabling physical layer attachment to copper, optical, or emerging physical signaling media to allow for future encoding schemes
Maximum bandwidth per pin for enabling unique and small form factors, reducing cost, simplifying board design and routing, and reducing signal integrity issues
Embedded clocking scheme enables superior frequency scalability versus source synchronous clocking
Bandwidth scalability with frequency and/or interconnect width
Predictable low latency suitable for applications requiring isochronous data delivery
Quality of Service (QoS) attributes
Mechanisms to support embedded and communications applications
Hot Plug and Hot Swap capability
Power Management capabilities

Benefit of serial technology over parallel architecture

Serial technology does away with the limitations of parallel bus architectures by delivering high bandwidth in the fewest number of signals. This allows higher frequency scaling while maintaining cost effectiveness.

More info

1. Serial interface
2. Higher bandwidth (100mb per second per pin)
3. Requires a (very clean) 12v supply
4. High temperature (requires direct cooling)
5. Software compatible (not hardware)
6. 164 pin connector, measures 89mm

PCI Express interface
Radeon 9700 Pro PCI Express card

[Woody_87th]

No sense in getting a MB that is going to be ouitdated in a year or less!

:laugh: :laugh: :p :D

Man, when you discover a way to avoid buying computer technology that won't be obsolete in a year please let the rest of us know!!! :p

[minibubba]

i was under the impression that PCI express was going to be 64-bit, am I wrong?

[b]4. High temperature (requires direct cooling)

are PCI cards gong to need a HSF now too? and maybe little heat sinks stuck all over the mobo?

[ufuk21p]

well the AMD 8151 chipset uses PCI-X , msi and tyan started producing mobos using this chipset.
pci-x is 64bits wide and 133MHz fast.
bandwitdh is therefore 1GBps+.
agp 8x is 2.1GBps ( 8 x 66MHz x 32bits)
maybe they'll build 4x pci-x in the future but i don't think it'll be so soon.
we haven't even seen the full benefits of agp 8x yet.

[webe3]

Well, from what I have read, it sounds promising! But it seems a little too early to tell how it will go, with thbe technology being so new......guess I will have to see if I want to upgrade now or wait a year....

[The__tweaker]

guess I will have to see if I want to upgrade now or wait a year....

Damn I wish I had your patience.. lol

[VinnieVen]

Well, from what I have read, it sounds promising! But it seems a little too early to tell how it will go, with thbe technology being so new......guess I will have to see if I want to upgrade now or wait a year....

This is a common hting on asus motherboards, they like to com eup with a new proprietary technology then drop it after a couple years. As an example are the "Magic Blue" PCI slot found on the A7V8X/A7N8X mobos and the CNR found on the P4B.

The new P4C800 and P4P800 have the ASUS WIFI Connector for optional wireless LAN upgrade as their newest proprietary technology.

Hopefully the PCI-eXpress won't go by the wayside.

I believe that this is also the same technology that is in use on many server boards and are 32/64 bit compatible.

[minibubba]

This is a common hting on asus motherboards, they like to com eup with a new proprietary technology then drop it after a couple years. As an example are the "Magic Blue" PCI slot found on the A7V8X/A7N8X mobos and the CNR found on the P4B.

what "Magic Blue" PCI slot? I've got an A7N8X and don't know what the hell you're talking about. :confused:

[VinnieVen]

My mistake, it wasnt offered on the A7N8X, just oging form memory. Check out the A7V8X

[weta]

ufuk21p: PCI-X isn't PCI Express, believe me it's an easy mistake to make.

[E^vol]

ufuk21p: PCI-X isn't PCI Express, believe me it's an easy mistake to make.

Yup ! weta's right, PCI-X is parallel, not serial. PCI-X has/will be used in server mobos.