1080 underperforming

[Benshermen]

Hello, I have recently made the purchase of a Zotac GTX 1080 amp extreme and have had good performance with it, but not what it should be performing at. One of my good friends who helped build the PC with the card purchased recently a Gigabyte GTX 1070 g1 gaming (I believe) and he seems to be getting significantly higher frame rates than me in every game we compare, usually above 30 frame difference, most notably in Overwatch where at the epic preset I get roughly 100 frames, having a 144 hz monitor I thought that to be acceptable but when I heard the frame rates my friend was getting which was usually over 150 running epic with settings cranked even higher, At the setting he was using I would get about 70 frames. Why would a 1080 underperform in this way? The card requires 2 8 pin power cables and and the only cables I have plugged into it is a 6 and 8, but that 2 pins couldn't make a difference could it? No games right now can go lower than 60 frames (most of the time) recently but my worry is in future titles. What my friend had said that I had fallen victim to the silicon lottery but should I be getting less performance for $900 to a card that cost half? What other factors might play into this, we both have the same processor and same amount and type of ram, I have already had to return a defective 1080 I want to know if I have yet again gotten a bad card, can someone help me out? (Also sometimes when I was playing borderlands 2, I would get less than 60 frames at maxed out settings) thanks.

[don_svetlio]

Let me guess, you have an i5 and your friend has an i7?

[don_svetlio]

You are also not powering the GPU properly and starving it...

[jasonyaputra]

you are just unlucky as i am  please help me on my post (cpu overheating cause huge fps drop) ---> 

 

[roylapoutre]

Start by powering the card properly and see what happens. Post your complete specs too. If you have a shitty CPU, you can have the best GPU out there, it won't make any difference !

[dreamhacking]

3 hours ago, don_svetlio said:

Let me guess, you have an i5 and your friend has an i7?

 

3 hours ago, Benshermen said:

we both have the same processor and same amount and type of ram

Looks like they have the same CPU