HD 7770 Ghz edition issue

Me-Professional

Reputable
Jul 7, 2015
56
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4,630
Hello I have the sapphire HD 7770 Ghz edition, I am new into this field and I don't have much experience I have it installed on the following:

Gigabyte H61M-S2P motherboard -> http://www.gigabyte.com/products/product-page.aspx?pid=4293#ov
4 GB Kingston RAM 1333 MHZ [Dual Channel]
Celeron G1620

Now this motherboard supports PCIE 3 as stated, and the card is PCIE 3 as well why does it show it works on v1.1 on GPU-Z?!
Would that decrease the performance of that card? I know the processor may bottleneck it but it does support v3!

Anyhelp? Thanks..