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PCI expresss is backward compatibly with PCI SLot?

Forum CPU & Components : Other Components - PCI expresss is backward compatibly with PCI SLot?

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hmp_khauff   12-18-2008 at 05:08:47 AM

When we talk that PCI Express is backward compatible with PCI Slot what we are talking? because phisically isn't compatible.

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V3NOM   12-18-2008 at 05:39:11 AM
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pci express 2.0 is backwards compatible with pci express 1.1.

pci is completely different

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GhislainG   12-18-2008 at 05:39:57 AM
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PCI-X controllers usually are electrically backward compatible with PCI. Most PCI controllers work in a PCI-X slot. PCI Express is not compatible with PCI.

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boulard83   12-18-2008 at 06:15:05 AM
- 0 +

all true ! PCI-X(X is for a number) cant go with PCI-E

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Bronze CPUs badge cjl   12-18-2008 at 06:39:24 AM
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X is not for a number. PCI-X is PCI-extended, used for many workstation and server cards. It is mostly backwards compatible with PCI. Neither is compatible (in either direction) with PCI-E. PCI-E 2.0 is backwards compatible with PCI-E 1.1 though.

(see here for more on PCI-X)

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jerreece   12-18-2008 at 06:53:13 AM
- 0 +

PCI-E is definitely a no-go in a PCI slot.

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boulard83   12-18-2008 at 07:02:14 PM
- 0 +

SRy missing some INFO from my post, i mean PCI-x 1.0-2.0

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