Gainward 660ti phantom bus interface issue

these are my system specs


cpu: I5 2500k 3.3ghz
cpu cooler: antec 620
mobo: asrack z77 extreme 4
ram: vengeance 4x2g
graphics card: gtx 660ti 2gb phantom II
Hdd: WD 500g
psu: corsair vx550
case: nzxt phantom


My question is, why my bus interface in gpu-z is only showing PCI-E 2.0x16, that the card must be pcie 3.0?i try running different version of gpu-z
but still the same issue showing, i also try different driver version but nothing new happens

but when i try to intall my older card xfx7850 core edition, it shows normal bus interface which is 3.0x16? is this normal or card powersaving features?

pls. help
6 answers Last reply
More about gainward 660ti phantom interface issue
  1. you need ivy bridge procie to have pci-e 3.

    but no worries, even a 680 cannot saturate 2.0
  2. but why when im using my 7850 it shows my bus interface correctly?
  3. from asrock site for your z77 extreme4:

    Note:
    PCIe Gen3 is supported on 3rd Generation of Intel® Core i5 and Core i7 CPUs.

    and again, it does not matter, even a 680 cannot saturate 2.0
  4. I use the same mobo,it has two pcie slots but the one at the lower end is 2.0 and the one closer to the cpu socket is 3.0 so make sure you have installed the card on the upper slot.
  5. i have a 670, with z68 and sandy. but based on test, it's perfectly fine, same speed.
  6. @ anik8, i always used pci upper most slot but the issue is still there and why when im using other card it shows 3.0X16?
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