[Warning: Fudzilla]PCI Express 1.0/1.0a not compatible with 2.0 spec

killer_uk · 18 Aug 2007 at 00:30

P35 - 1.1a
P965 - 1.1a
975x - 1.0

Not a clue about the other chipsets as I can't find any whitepapers for them but I would image all chipsets since the 975x are 1.1 onwards.

Cyber-Mav · 18 Aug 2007 at 00:43

LOL looks like AGP is gonna have a longer life than PCI-E v1

Talrinys · 18 Aug 2007 at 00:46

With the disclaimer of not meaning to annoy people too much:
The 975 is a pretty old chipset by now, espically compared to the 965. I'm pretty sure that there is no conspiracy here people, just a matter of either not being technologically feasible at that point, or simply a cost thing. Whatever the story, there are plenty of ways to upgrade, and if you're really gonna buy a new awesome chip, why not get a MOBO upgrade too?

queamin · 18 Aug 2007 at 00:50

Talrinys said:
With the disclaimer of not meaning to annoy people too much:
The 975 is a pretty old chipset by now, espically compared to the 965. I'm pretty sure that there is no conspiracy here people, just a matter of either not being technologically feasible at that point, or simply a cost thing. Whatever the story, there are plenty of ways to upgrade, and if you're really gonna buy a new awesome chip, why not get a MOBO upgrade too?

because it is a lot easier to just drop a graphic card in and you get a good boost aswell.

Talrinys · 18 Aug 2007 at 00:55

queamin said:
because it is a lot easier to just drop a graphic card in and you get a good boost aswell.

Definitely true

But seeing as these new ones are going to be moving a huge amount of data, and the PCI-E bus is indeed starting to get saturated by the high-end cards, maybe it won't be much of a boost without PCI-E2?
I understand why people are ****ed, but it's one single MOBO family, it's only a problem if using Crossfire, and it was probably Intels decision in the beginning?

gareth170 · 18 Aug 2007 at 09:41

lay-z-boy said:
No, X38 is the first chipset to have the PCI-E v2 enabled.

PCI-E 2 is twice the speed.

if the pci-e is 4gb or 8gb why mine saying 2.5gb? my ,motherboard is a full x32 so it should be 8gb bandwidth

gary996 · 18 Aug 2007 at 10:53

Talrinys said:
Definitely true
But seeing as these new ones are going to be moving a huge amount of data, and the PCI-E bus is indeed starting to get saturated by the high-end cards, maybe it won't be much of a boost without PCI-E2?
I understand why people are xxxxxx, but it's one single MOBO family, it's only a problem if using Crossfire, and it was probably Intels decision in the beginning?

Edit sweary

lay-z-boy · 18 Aug 2007 at 13:49

gareth170 said:
if the pci-e is 4gb or 8gb why mine saying 2.5gb? my ,motherboard is a full x32 so it should be 8gb bandwidth

Don't get confused between GB/s and Gb/s

Try using some other software, see what that reads. Everest, etc.

rounddodger · 18 Aug 2007 at 14:34

I take it my Asus P5B-Deluxe will be able to handle a 9800GTX then? (intel 965)

SixDemons · 18 Aug 2007 at 16:06

rounddodger said:
I take it my Asus P5B-Deluxe will be able to handle a 9800GTX then? (intel 965)

dont know... I hope not, because I have the same mobo :eek:

Final8y · 18 Aug 2007 at 20:59

Does that mean i have to change my mobo to run the next ATI card in crossfire?

killer_uk · 18 Aug 2007 at 21:04

If the specs on the ATI site are correct, you won't be able to run any new PCIE 2.0 cards on your motherboard.

PCI Express Interface

Compliant with the PCI Express 1.0a Specifications

Thats if the original article is correct of course.

kidkhaos · 18 Aug 2007 at 21:31

well are there any mobo's out atm that will run PCIE 2.0 in sli/crossfire?

Final8y · 18 Aug 2007 at 21:43

killer_uk said:
If the specs on the ATI site are correct, you won't be able to run any new PCIE 2.0 cards on your motherboard.

PCI Express Interface

Compliant with the PCI Express 1.0a Specifications

Thats if the original article is correct of course.

What a joke :mad:

AGP was backward compatible a generation or so.

ps3ud0 · 18 Aug 2007 at 21:52

Final8y said:
What a joke
AGP was backward compatible a generation or so.

No it wasnt - try putting a 1.5v AGP card into a 3.3v AGP slot and watch it work - wouldnt even fit

Jesus people forget quickly...

ps3ud0 :cool:

Final8y · 18 Aug 2007 at 21:54

ps3ud0 said:
No it wasnt - try putting a 3.3v AGP card into a 5v AGP slot and watch it work - wouldnt even fit

Jesus people forget quickly...

ps3ud0

Im talking about X2 X4 X8 in that respect.

ps3ud0 · 18 Aug 2007 at 21:56

Final8y said:
Im talking about X2 X4 X8 in that respect.

And Im talking about trying to put in a AGP 4x/8x card into a AGP 2x slot - either it would be keyed to not fit or youd cause some serious damage to the card...

ps3ud0 :cool:

Final8y · 18 Aug 2007 at 22:01

ps3ud0 said:
And Im talking about trying to put in a AGP 4x/8x card into a AGP 2x slot - either it would be keyed to not fit or youd cause some serious damage to the card...

ps3ud0

My point was that you could put a x8 card into a x4 slot.
x8 was one gen up from x4 ..PCIE 2 is one gen up but no go from PCIE1.
Ofcorse i would expect some penalty for running it in a PCIE1 slot.

ps3ud0 · 18 Aug 2007 at 22:07

So should I ignore the same scenerio of fitting a AGP 4x card into an AGP 2x slot? Which were actually physically incompatible?

As I said people are quick to forget the issues that happened when the signalling voltages changed from AGP Spec v1 (3.3v) to Spec v2 (1.5v) and effectively the same discussion you are having now happened then. Lots of people had mobos based on the AGP Spec v1 and expected Spec v2 cards to work unfortunately that wasnt the case (the real doozey was that AGP Spec v1 1x and 2x was incompatible with AGP Spec v2 1x and 2x - work that one out

)...

Something to illustrate my point:

Cyber-Mav said:
LOL looks like AGP is gonna have a longer life than PCI-E v1

Which AGP Spec you talking about

. AGP Spec v1 was superseded after a year; AGP Spec v2 after 4 years. PCIe v1 seems to have done ok so far (3 years)...

ps3ud0 :cool:

ps3ud0 · 18 Aug 2007 at 22:30

Anyway back on the topic, it looks like only motherboards that solely adhere to PCIe 1/1.0a will actually have a problem with PCIe 2 cards (lets ignore the SLI/Crossfire issue because tbh anyone who can afford to SLI/Crossfire using PCIe 2 parts is likely to be able to accomodate a mobo upgrade in the near future)

Unfortunately PCI-SIG are open about what the real differences are between 1/1.0a and 1.1 (well I cant find any freely available white papers) so the best idea might be to check the following site out which details PCI-SIG integrators compliance:

http://www.pcisig.com/developers/compliance_program/integrators_list/pcie

I noticed a fair few GFX cards and chipsets on there so hopefully you can piece together whats PCIe 1/1.0a and whats PCIe 1.1 (if your chipset is new and not on that list Id probably assume its PCIe 1.1)...

Bugger NF4 is PCIe 1.0a

ps3ud0