FPS related to sync

Shinobi22

i dont know what i do, please help me i have some questions if i know how to use these settings then i will get fps boost in games like dmc5,assassins creed etc

1)difference between G-sync and V-sysn

2)my fps drop or increase if i use v-sync and g-sync together

3)what happen if i use s-sync and fast sync together

4) if i use v-sync only

5)if i use g-sync only

please reply me fast as possible

Shinobi22

@andylb please help, answer me

andylb

@GAMING6698 is the game settings expert 

GAMING6698

@Shinobi22
A1)vsync -use to prevent screen tearing by lowering fps according to screen refresh rate, screen tearing is kind visual artifact,  it is horizontal lines display on the screen.

For example - if your GPU sending or giving 100fps but your screen has a 6hz refresh rate tearing occurs as the graphics card sends a new frame while the current frame is being displayed

G-sync-  New display technology by Nvidia which provide fastest, smoothest gaming experience by eliminating screen tearing and minimizing display stutter and input lag. The result scenes appear instantly, objects look sharper, and gameplay is super smooth, giving you a stunning visual experience and a serious competitive edge.
G-sync gives more fps then vsync also vsync cause input lag.

2)G-Sync + V-Sync - Caps framerate to max refresh rate 

3)you may be taking about G-Sync not s-sync
G-sync + fast sync- Doesn't cap framerate to monitor max refresh rate. Works in a similar way to what triple-buffering.it help to gain more fps 

I already answered question 4 and 5 in answer 1

Shinobi22

thank you so much @GAMING6698 and @andylb

Nero21

Their is any amd display technology ? 
Nvidia -G-Sync
Amd-

GAMING6698

@Nero21 AMD- freesync