I have new card gtx 780 OC asus direct cu2
In doom - 780 25-30 slower than 7950, and battlefield:
https://www.youtube.com/watch?v=TwABIt9iiic - 780
https://www.youtube.com/watch?v=c8tPdi-Ixsg - 7950


Doom WQHD 1440p ULTRA. - https://www.youtube.com/watch?v=8IUhwKCp798
Doom 900p High Solid 60 fps - https://www.youtube.com/watch?v=qfjlBtLw2UA


Half-life 2 - https://www.youtube.com/watch?v=3Qkzv_reDfA

120fps gaming - https://www.youtube.com/watch?v=r01BTVaVegM

Destiny 2 beta high - https://www.youtube.com/watch?v=ltH_y82oL7M

Battlefield 1 - https://www.youtube.com/watch?v=c8tPdi-Ixsg

Furmark stress test 7950 dual-x boost oc 1050\1500 -
https://www.youtube.com/watch?v=EwK2LtFF7ZI

dota - https://www.youtube.com/watch?v=CtlDs0syAf8

doom 2016 vulkan hight settings. One graph.settings for 2 videocards:

hd 7950 OC (1100\1500) - https://www.youtube.com/watch?v=MfLN_E9lp_Q stability 60fps

hd 7950 stock (925\1250) - https://www.youtube.com/watch?v=t8o_ytHoNlE

hd 7870xt 2gb - https://www.youtube.com/watch?v=zisFPJ-LWFg

This game level most heavily loads the system per the full game. The most minimal frame rate in doom for your system can be found at this level.
This is the optimal setting for this video card. Reducing the settings to minimum slightly increases the minimum FPS in the game, but greatly reduces the quality of graphics.