What are the PCI-E x1 slots for?

Lazn_Work

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PCIe 1x devices.

Eventually PCI (the bigger older usually white slots) will go the way of ISA. Just like PCI and ISA existed on MB's at the same time for a while, PCIe and PCI are both supported for now. But eventually no one will make PCI devices anymore and PCIe 1x is the replacement for lower bandwidth devices.


==>Lazn
 

Eva_Unit_0

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^ yep. A good current example of devices "making the move" is network adapters. A gigabit network card can completely saturate the entire pci bus (which is also a gigabit bus) so a pci gigabit card is never going to actually get close to real gigabit speeds. So pci-e gigabit network chips now exist to get higher throughput.

There are also some pci-e raid controllers since, once again, 133 MB/s could easily be saturated by a high-end raid setup.
 

DangerIsGo

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Also, the new PPU (Physics Processing Units) will have PCIe 1x compatibility as well.
 

HOCP4ME

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DangerIsGo said:
Also, the new PPU (Physics Processing Units) will have PCIe 1x compatibility as well.
I actually heard that the fastest PhysX chips might take advantage of PCI-Ex4.
 

Malogato

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I tried finding a PCI-e faq.. but here's a question I have about PCI-E


Are "greater" slots backwards compatible to "lesser" cards?

I've got an EVGA SLI NF4 motherboard.

It has, physically, from top to bottom

1 PCI-E x1
1 PCI-E x8
1 PCI-E x16
1 PCI-E x8
and
PCI legacy
PCI legacy
PCI legacy

Slots in it.

Lets say I pop my single PEG-16 card into the PEG-16 slot

and I want to buy 3 PCI-E x1 raid controllers [just a hypothetical]

Can I put two of them in the x8 slots? i.e.

can I have

Pci-e x1 raid card [in pci-e x1 slot]
pci-e x1 raid card or hell, network card, sound card [in pci-e x8 slot]
pci-e x16 video [in pci-e x16 slot]
pci-e x1 raid card or hell, network card, sound card [in pci-e x8 slot]

my pci video cap card in PCI slot
my old IDE raid card in pci slot
my old scsi card in PCI slot
 

Lazn_Work

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Malogato said:
I tried finding a PCI-e faq.. but here's a question I have about PCI-E


Are "greater" slots backwards compatible to "lesser" cards?

I've got an EVGA SLI NF4 motherboard.

It has, physically, from top to bottom

1 PCI-E x1
1 PCI-E x8
1 PCI-E x16
1 PCI-E x8
and
PCI legacy
PCI legacy
PCI legacy

Slots in it.

Lets say I pop my single PEG-16 card into the PEG-16 slot

and I want to buy 3 PCI-E x1 raid controllers [just a hypothetical]

Can I put two of them in the x8 slots? i.e.

can I have

Pci-e x1 raid card [in pci-e x1 slot]
pci-e x1 raid card or hell, network card, sound card [in pci-e x8 slot]
pci-e x16 video [in pci-e x16 slot]
pci-e x1 raid card or hell, network card, sound card [in pci-e x8 slot]

my pci video cap card in PCI slot
my old IDE raid card in pci slot
my old scsi card in PCI slot
Yes, you can put a 1x card into a 16x slot. (or any other PCIe slot)

==>Lazn
 

Binkt

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Hey, I was wondering if there was anyone out there who has stuffed a PCI-E x8 RAID card (areca 1220, 3ware 9550, etc..) into the x16 Pci-express "for Graphics" 16 lane slot?

Is there any real difference in these slots, or am I good to go?!
 

Lazn_Work

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Binkt said:
Hey, I was wondering if there was anyone out there who has stuffed a PCI-E x8 RAID card (areca 1220, 3ware 9550, etc..) into the x16 Pci-express "for Graphics" 16 lane slot?

Is there any real difference in these slots, or am I good to go?!
In this thread:
http://www.hardforum.com/showthread.php?t=913228&page=3

UICompE02 said:
"Actually, now that I think about it, I have tested with one of these guys: http://www.hp.com/workstations/pws/xw9300/

It's an nVidia/AMD thing with dual x16 SLI slots. I was able to use my PCI-E x8 cards in either or both slots without a problem. I don't know how this chipset is different from a standard nForce4, however. Though, they are based on the same design."

But keep in mind, it probably will not work in a normal SLI slot, as when it is in SLI mode and each slot is in 8x mode, it is not quite normal 8x PCI-E the two slots are "synched." So it should work in the new SLI-16 motherboards, and on nForce Pro boards that have two 16x slots like the K8WE.

==>Lazn
 

USMC2Hard4U

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I find this amazing that people still ask this. The Obvious answer is they will be the replacement for Legacy PCI cards.
 

Ruffy

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personally i want tv tuners to move to PCIe already. Same with sound cards.

but currently only network and raid cards are avail.
 

vmerc

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Lazn_Work said:
PCIe 1x devices.

Eventually PCI (the bigger older usually white slots) will go the way of ISA. Just like PCI and ISA existed on MB's at the same time for a while, PCIe and PCI are both supported for now. But eventually no one will make PCI devices anymore and PCIe 1x is the replacement for lower bandwidth devices.


==>Lazn
LOL! "Lower bandwidth" should be taken with humor since PCIe 1x is still faster than AGP 8x (I think 8x or if not it's 4x)
 

Lazn_Work

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vmerc said:
LOL! "Lower bandwidth" should be taken with humor since PCIe 1x is still faster than AGP 8x (I think 8x or if not it's 4x)
PCI-E 1x = 250MB/sec

AGP 8x = 2.2GB/sec

AGP 4x = 1.1GB/sec

So nope.

==>Lazn
 

vmerc

Limp Gawd
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Messages
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Lazn_Work said:
PCI-E 1x = 250MB/sec

AGP 8x = 2.2GB/sec

AGP 4x = 1.1GB/sec

So nope.

==>Lazn
WTH? I must have been smoking something then. Still 250MB/sec is not bad for "Low Bandwidth"

I'll have to go look at that Intel graph that was talking about PCIe again.
 
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