nV News Forums


nV News Forums (http://www.nvnews.net/vbulletin/index.php)
-   NVIDIA GeForce 600 Series (http://www.nvnews.net/vbulletin/forumdisplay.php?f=85)
-   -   GTX 670 detected as PCI-E 2.0 only? (http://www.nvnews.net/vbulletin/showthread.php?t=181903)

Crow_Nest 05-27-12 05:57 AM

GTX 670 detected as PCI-E 2.0 only?

Shouldnt it be PCI-E 3.0? Im on the Asus P8Z68V/GEN3 which has proper PCI-E 3.0 support and the card itself supports it too. Is GPU-Z displaying it wrongly or is it an issue with my mobo? Should I try updating my mobo BIOS?

Crow_Nest 05-27-12 06:53 AM

Re: GTX 670 detected as PCI-E 2.0 only?

Originally Posted by slaWter (Post 2559255)
It's because the driver is not validated yet for your platform. Same story as with X79 (maybe that's changed by now).

Does that mean the advantages of PCI-E 3.0 are not being taken advantage of right now? Although I doubt it'll really make THAT much of a difference in performance gain.

Rummy 05-27-12 03:20 PM

Re: GTX 670 detected as PCI-E 2.0 only?
Saw this the other day..


Crow_Nest 06-01-12 02:08 PM

Re: GTX 670 detected as PCI-E 2.0 only?
Thanks! Will check it out. Then again maybe i'll just leave it alone in the end.

alitayyab 06-03-12 04:11 AM

Re: GTX 670 detected as PCI-E 2.0 only?
Assuming your sig is correct and you have a sandybridge processor you will not be able to get PCI-e 3.0 BW as the pci-e 3.0 lanes originate from the CPU . if you dont have an IB CPU you really do not have PCI-e 3.0 lanes, even if your board is gen 3 certified. You would need to pair it to a IB processor to get PCI-e 3.0 bandwidth

This is also listed on the ur board's web page:


read below "PCI Express® 3.0"

* Actual PCIe 3.0 speed varies with the installed CPU type.

The z77 PCH diagram (link below) elucidates this point. Look at where the PCI-e 3.0 lanes originate from:


Older (<PCH 7), that have certification for gen3 only have lanes that are 'sturdy' enough (electrically) to carry over the PCI-e 3.0 bandwidth.

i SPY 06-03-12 06:06 PM

Re: GTX 670 detected as PCI-E 2.0 only?

and the only working pcie3.0 driver atm is still 300.83 (or maybe 300.89),

300.83 win7 x64 and apparently win8 RC compatible

Crow_Nest 06-08-12 10:47 AM

Re: GTX 670 detected as PCI-E 2.0 only?
No wonder i'll never get it.. This is why i hate fine print. :D

All times are GMT -5. The time now is 05:54 PM.

Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2014, nV News.