I am looking for a motherboard with a PCI-X slot that is quad compatible.?

Question

I am looking for a motherboard that has a pci-x (not pci-e) and supports Quad processors.

Preferably one that is 45nm compatible and has a pci-e slot as well, but the first 2 requirements are a must.

All I could find were
the Asus "P5NT WS", the "P5WDG2", and the "P5K WS", and they are pretty hard to come by.

Answer 1

I think you pretty much already answered your own question, I would go with the P5K WS, here it is at newegg:http://www.newegg.com/Product/Product.aspx?Item=N82E16813131185

It is a bit pricy, but PCI-X is hard to find in mainstream boards, and ASUS is the best brand, so I would go with this one.

Answer 2

What card must you use that requires you to have a PCI-X slot. PCI-X is dead technology, why do you need to muck up a new computer motherboard with this obsolete technology?

PCI-Express is superior to PCI-X. For this reason few if any motherboards will support it.

This November 2007 PCI Express 2.0 will be released.
The buss will be twice as fast as the PCI Express used in todays computers. PCI Express 2.0 16x is four times as fast as PCI-X.
http://www.tomshardware.com/forum/244487-28-express-standard-ready


http://en.wikipedia.org/wiki/PCI-X
PCI-X has a number of technological and economical disadvantages to PCI-Express. The 64-bit parallel interface requires inherently difficult trace routing, because as with all parallel interfaces, the signals from the bus must arrive simultaneously or within a very short window, and noise from adjacent slots may cause interference. The serial interface of PCIe suffers fewer such problems and therefore requires less complex and less expensive designs. PCI-X buses, like PCI, are half-duplex bidirectional whereas PCIe buses are full-duplex bidirectional. PCI-X buses run only as fast as the slowest device; PCIe devices are able to independently negotiate the bus speed.
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http://www.directron.com/expressguide.html
PCI 132 MB/s
AGP 2X # 533 MB/s
AGP 4X # 1,066 MB/s
AGP 8X # 2,100 MB/s
PCI Express 1x 500 MB/s
PCI Express 2x 1000 MB/s
PCI Express 4x 2000 MB/s
PCI Express 8x 4000 MB/s
PCI Express 16x 8000 MB/s

http://www.tomshardware.com/forum/244487-28-express-standard-ready
PCI Express 2.0 16x 16000 MB/s (15.6 GB/s)

http://en.wikipedia.org/wiki/PCI-X
PCI-X 1064 MB/s
PCI-X 2.0@266MHz 2.15 GB/s
PCI-X 2.0@533MHz 4.3 GB/s