Sign In
Create Account
Follow Us on Twitter
Subscribe on Youtube
PCI-X and PCI Express - Are these one and the same?
PCI-X and PCI Express
Started by
Guest_NeedHelp_*
, Jun 22 2007 02:19 PM
3 replies to this topic
Back to top|
|
|
#2
Posted 22 June 2007 - 06:23 PM
kromagnon
-
- Members
-
- 50 posts
Learning Programmer
#3
Posted 22 June 2007 - 06:54 PM
xXHalfSliceXx
-
- Moderators
-
- 1,694 posts
Speaks fluent binary
#4
Guest_Jordan_*
Posted 23 June 2007 - 06:03 AM
Guest_Jordan_*
Guest_Jordan_*
-
- Guests
Quote
PCI-Express, on the other hand, uses a serial interconnect along a switched bus dedicated exclusively to that slot. In this respect, and most others, it uses radically new architecture, having little to do with old PCI. Furthermore, PCI-Express has the unique capability of multiplying up individual data "lanes", to produce aggregate interconnects that can deliver up to 16 times the bandwidth of a single lane. This is why you will always see PCI-Express slots referred to as "PCI-Express*4" or "PCI-Express*16" etc.
PCI-X uses a parallel interconnect along a bus that is shared with other PCI-X devices, just like PCI. In fact, PCI-X is best thought of as "PCI-eX tended", as it is simply an extension of the legacy PCI 32-bit format, with which it is backward-compatible. It differs mainly in the fact that the bus is now 64-bits wide, and runs at higher frequencies (now up to 533MHz, compared to 66MHz - the fastest PCI frequency).
PCI-X uses a parallel interconnect along a bus that is shared with other PCI-X devices, just like PCI. In fact, PCI-X is best thought of as "PCI-eX tended", as it is simply an extension of the legacy PCI 32-bit format, with which it is backward-compatible. It differs mainly in the fact that the bus is now 64-bits wide, and runs at higher frequencies (now up to 533MHz, compared to 66MHz - the fastest PCI frequency).
Check The Difference Between PCI-X and PCI-Express - Electronics Nexus for more and for the source of the quote.
