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PCI-E 3.0 Motherboards

I

imported_dvdman

Member
Hey guys..... updating the CPU and mobo on the PC and was looking at these motherboards:

Asus P8Z68-V Pro
Asus P8Z68-V LE
Asus P8Z68-V Pro Gen 3

I was reading around about what the "Gen 3" was all about and apparently it just supports PCI-E 3.0.

One of my questions is will getting that still support all PCI-E video cards!?

I also read this and it confused me a little..

The only difference is that the GEN 3.0 version natively comes with support for Intel Ivy Bridge 22nm CPUs but if you have the non-GEN 3.0 version, you can just update the BIOS to version 0902 and you've got the support too.
Click to expand...

The CPU's we are looking at are one of the below..

i5 2500 LGA1155
i5 2500K LGA1155
i7 2600 LGA1155
i7 2600K LGA1155
i7 2700K LGA1155

Would everything work well together no matter if we went with the "standard" board or the "Gen 3" board!?

Thanks a lot!
 
When paired with ivy bridge the gen3 board will run a pcie3 spec'd video card within full pcie3 specs. All video cards will work at stated specs. When paired with compatable sandy bridge chip the only thing you loose is pcie3 only things such as the extra bandwidth. Fully backwards compatable.
 
It really comes down to if you are using our 2nd generation Intel® Core™ processors you wont be able run anything at PCI-e 3.0 even if the board supports it. Motherboards that list PCI-e 3.0 are doing so with the idea of supporting the next generation of Intel Core processor when they are released. So if you get one of these boards you will have a longer period in which you can upgrade it from a longer list of processors.
 
Ok let me see if I got this straight..

I can buy one of those CPU's above and pair it with the non-gen 3 board and everything will run fine, I just won't have PCI-E 3 support.

I can buy one of those CPU's above and pair it with the gen 3 board and everything will run fine including the video card, but this board will allow me to upgrade to an "Ivy Bridge" CPU in the future.

Is that about right!? 🙂
 
imported_dvdman said:
Ok let me see if I got this straight..

I can buy one of those CPU's above and pair it with the non-gen 3 board and everything will run fine, I just won't have PCI-E 3 support.

I can buy one of those CPU's above and pair it with the gen 3 board and everything will run fine including the video card, but this board will allow me to upgrade to an "Ivy Bridge" CPU in the future.

Is that about right!? 🙂
Click to expand...

Correct, but you will be able to use Ivy Bridge in any of those boards (with a BIOS update) according to Asus anyway.

The only difference is that with the gen3 board AND an Ivy Bridge CPU AND a PCI-e 3.0 video card (like a 7970), you will be able to use full PCI-e 3.0 bandwidth.
 
The only difference is that with the gen3 board AND an Ivy Bridge CPU AND a PCI-e 3.0 video card (like a 7970), you will be able to use full PCI-e 3.0 bandwidth.
Click to expand...

As opposed to not being able to without the "Gen 3" board? ...even with the BIOS update on the non-gen 3 board?
 
gramboh said:
Correct, but you will be able to use Ivy Bridge in any of those boards (with a BIOS update) according to Asus anyway.

The only difference is that with the gen3 board AND an Ivy Bridge CPU AND a PCI-e 3.0 video card (like a 7970), you will be able to use full PCI-e 3.0 bandwidth.
Click to expand...
Say I bought a non GEN3 branded/marketed mobo, and suppose it supports Ivy in a BIOS update, and I upgraded to a Ivy CPU .. will it not run at PCIe 3.0 if I had a PCIe 3 gfx card?

The reason I ask is that newegg has a Asus board that comes in GEN3 and non GEN3.
 
Last edited:
http://hardforum.com/showthread.php?t=1667199&highlight=PCIe

part of the discussion

It's because of the PCIe switch. The boards that have the switches to allow x8x8 only used PCIe 2.0 switches, so they can't do PCIe 3.0. Boards that don't have the switch can do single card PCIe 3.0. At least that's my understanding from the MSI/Gigabyte flap a few months back.
Click to expand...

if you want something CONFIRMED to work with PCIe 3.0, wait till PCIe 3.0/IB actually comes out

anyways, what GPU/stuff do you want to use that actually uses all PCIe 3.0 16 lanes?
 
I would wait for a Z77 board and a ib this close to release.April 8
for native support of pci-e 3.0
-unless you really trust bios work arounds , I don't.
 
Garr .. I was hoping to upgrade this month .. I guess I'll have to wait.

as for why I want pcie 3 .. so I don't need to replace mobo for when I do get a 3.0 gfx card.
 
rgallant said:
I would wait for a Z77 board and a ib this close to release.April 8
for native support of pci-e 3.0
-unless you really trust bios work arounds , I don't.
Click to expand...

agreed.
Was flirting with the idea of upgrading but will probably wait until IB is out and a few months in to grab more mature Z77 motherboards
 
Joshatdot said:
Garr .. I was hoping to upgrade this month .. I guess I'll have to wait.

as for why I want pcie 3 .. so I don't need to replace mobo for when I do get a 3.0 gfx card.
Click to expand...

You don't need a PCI-e 3.0 mobo to use a PCI-e 3.0 card, the standard is backwards compatible. 3.0 gets you double bandwidth per lane, but for a single card/GPU setup it does not matter. If you plan on running SLI/CF top of the line (7970/680) it might make a small difference.
 
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