PCI Express x16 or x16 2.0 Motherboard

[M4er1c]

im getting the EVGA 8800 GTS 512MB G92 and i have a question. should i get a PCI Express x16 motherboard or a PCI Express x16 2.0 motherboard? my video card is PCI Express x16 2.0. i have this motherboard selected right now and i notice is a 750i motherboard... is that bad? im looking for a P35 chip set motherboard since people say its good. if you dont like it, can anyone suggest one?

 

[systemlord]

It doesn't matter if you get PCI Express x16 motherboard or a PCI Express x16 2.0 motherboard. That is because there is no card in existence that uses the PCI-express 2.0 spec, may be compatitible but thats it.

 

[M4er1c]

what do you mean? look here http://www.newegg.com/Product/Product.aspx?Item=N82E16814130312 . its says PCI Express x16 2.0

 

[homerdog]

Picture driving a Prius on an 8 lane highway with a 200mph speed limit and no other traffic. Now increase the speed limit to 400mph. That's about how useful PCIe 2.0 is to any 8800 class GPU (or any modern day GPU for that matter).

Oh and in case you were wondering, PCIe 2.0 is fully backwards compatible with PCIe 1.X.

 

[ohiou_grad_06]

However, I think I would look at the PCI Express 2.0 board as if you keep it long enough, you may be better set for future cards.

 

[amd_fanboi]

P35? hemmm... am i wrong in thinking thatyou'll findit a bit difficult to get a PCIe 2slot on a P35 board?

 

[systemlord]

what do you mean? look here http://www.newegg.com/Product/Product.aspx?Item=N82E16814130312 . its says PCI Express x16 2.0

Are you trying to tell my that my 8800GTX is slower than the 8800GTS 512MB because of the PCI-express 2.0 bus. I suggest you do some research, the fact that your willing to trust a NewEgg webpage is very sad.

No card in existence uses the PCI-express 2.0 spec, may be compatitible but thats it.

I'll stick with my factual correct statement!

 

[night_wolf_in]

Picture driving a Prius on an 8 lane highway with a 200mph speed limit and no other traffic. Now increase the speed limit to 400mph. That's about how useful PCIe 2.0 is to any 8800 class GPU (or any modern day GPU for that matter).

Oh and in case you were wondering, PCIe 2.0 is fully backwards compatible with PCIe 1.X.

thats exactly the case.

 

[systemlord]

Picture driving a Prius on an 8 lane highway with a 200mph speed limit and no other traffic. Now increase the speed limit to 400mph. That's about how useful PCIe 2.0 is to any 8800 class GPU (or any modern day GPU for that matter).

Oh and in case you were wondering, PCIe 2.0 is fully backwards compatible with PCIe 1.X.

You are assuming that todays graphics cards can go faster than 200mph top speed, so the 8800 series GPU will have to move over to the slow lane. Your logic is flawed, want proof >>

http://www.guru3d.com/article/Videocards/479/3/

Also worth mentioning is that the 8800 GT is fully PCI-Express 2.0 compliant. Not at all important though as 16GB/sec bandwidth over PCI-Expess 2.0 is not something this card will even remotely use.

More proof >> In order to compensate, PCIe 2.0 has modified the power standard. The previous 6-pin 75W connector has now been retired, moved instead to an 8-pin 150W connector (see the Inquirer for a picture). Bus speeds have also increased to 5Gbps, meaning that a 16x card can now potentially pull up to 16Gbps. Of course, current cards are a long way from even maxing out the PCIe 1.1 interface, so this is much more of a theoretical improvement.

http://www.bit-tech.net/news/2007/01/16/PCI-E_2_announced/

 

[homerdog]

You misread me, I'm saying PCIe 2.0 is useless for today's cards. Unless you know of a Prius that can go 200mph I'd say my logic was sound

 

[gwolfman]

It doesn't matter if you get PCI Express x16 motherboard or a PCI Express x16 2.0 motherboard. That is because there is no card in existence that uses the PCI-express 2.0 spec, may be compatitible but thats it.

I agree with the first 1/2. Either will work, there aren't any noticeable differences between PCIe 1.x and 2.0 yet.

What do you mean "...there is no card in existence that uses the PCI-express 2.0 spec, may be compatitible but thats it." That's not true! It runs on the spec, it just doesn't give any measurable benefit yet. The cards need to catch up to the available bandwidth now.

 

[M4er1c]

I agree with the first 1/2. Either will work, there aren't any noticeable differences between PCIe 1.x and 2.0 yet.

What do you mean "...there is no card in existence that uses the PCI-express 2.0 spec, may be compatitible but thats it." That's not true! It runs on the spec, it just doesn't give any measurable benefit yet. The cards need to catch up to the available bandwidth now.

ahhh. perfect answer for me. nice and simple for a person who doesnt know that much about computers does anyone know what PCI Express x16 2.0 video cards are gonna be noticed?

 

[homerdog]

Now why couldn't you have said that the first time? So you saying, driving a Prius on an 8 lane highway with a 200mph speed limit and no other traffic. Now increase the speed limit to 400mph = 16x PCI-e 1.1, right?.

Well the Prius on an 8 lane highway example isn't going to stand up to much scrutiny, but my point was that increasing the speed limit from 200mph to 400mph is equivalent to moving from PCIe 1.X to PCIe 2.0.

The problem with my example is that a single car can only utilize one lane of traffic, whereas a GPU can take advantage of extra PCIe lanes to increase bandwidth. A Prius won't go 4 times faster on a 16 lane highway than it will on a 4 laner, but a 16x PCIe link is 4 times faster than a 4x link.

Edit: Wait, where did your post go systemlord? I'm confused

 

[yankneck]

Let me make sure I am understanding this right. PCI E x16 is able to work on a board that is comparable to 2.0 X 16 but not the other way around. So a card that is 2.0 x16 will not work on a PCI E 16 board right?

 

[homerdog]

Wow, nice thread resurrection. And that Prius analogy needs some re-tooling...

Let me make sure I am understanding this right. PCI E x16 is able to work on a board that is comparable to 2.0 X 16 but not the other way around. So a card that is 2.0 x16 will not work on a PCI E 16 board right?

No, it works the other way around as well. A PCIe 2.0 graphics card will work in a PCIe 1.x slot. I'm doing it right now

 

[yankneck]

Ok Thank You

 

[complexxL9]

so PCIe 1.1 x16 is able to transfer data up to 4GB/s right?
and what are today's cards limitations? 4850 for example? what parameters do I check to calculate up to what speeds it can transfer data?

 

[homerdog]

so PCIe 1.1 x16 is able to transfer data up to 4GB/s right?
and what are today's cards limitations? 4850 for example? what parameters do I check to calculate up to what speeds it can transfer data?

You're overthinking it, just feel comfortable with the knowledge that you will not be limited by a 16x PCIe 1.1 slot.

Just FYI, a 16x PCIe 1.x slot can deliver 4GB/s in both directions for a theoretical limit of 8GB/s.

 

[Lynxer]

Hey i just bought a crossfire 2 with an amd athalon x2 any ways the graphics card worked fine in my old system but it doesnt fit in the new pci slots any reason besides the fact that they want you to upgrade and if that is the case will an ASUS radeon hd 3450 256mb gddr2 pci-e 2.0 x16 hdcpwork in there I read your post about the pci 16 / 2.0 and i under stand the fact that it is more or less a fact of building a vid card to increase copasity but im just wondering if this will work and if it is an ok vid card thanks Lynx.

 

[K-ous]

i have a XFX 9600GT 512MB GDDR3 and an XFX 680i LT SLI mobo.
i was wondering whether my mobo is PCI-Express2.0 compatible because my card is.

 

[tapher]

Will a 4850 x2 2GB card be bottlenecked by a motherboard with a PCI Express x16, and really need a motherboard with a PCI Express 2.0 x16?

 

[freestile]

so boards that have 1.0 pci express x16 slots will accept the new 2.0 pci express x16 cards?

 

[Kill@dor]

Yes...its just a voltage increase in 2.0 from 1.0...thats all

 

[madhatter6913]

Quick question:
I have a ASUS P5B mobo
(http://www.asus.com/product.aspx?P_ID=YwIVDOTcvIMHZdTy&templete=2)
and Im thinking about buying a Nvidia gtx275 card
(http://www.gigabyte.com.tw/Products/VGA/Products_Spec.aspx?ClassValue=VGA&ProductID=3130&ProductName=GV-N275UD-896I)
Will the card's capabilities be bottlenecked because of the mobo's age (and ofcourse the fact that it doesn't support PCI-e 2.0) ?

 

[Shtiken]

I've got a question: I have a PCI express mobo, I just bought a GeForce GTX 260.... how much am I losing out on (if I'm losing anything) by using this PCIe 2.0 card on a PCIe 1.1 motherboard?