DVI vs HDMI which is better and why?

Happy Crayfish

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So, as I said in the title I want to know which one is better and why it is better?
Do you get any quality loss when using one of them?

Also, while asking...
Should I get 144z with 80 million:1 dyn contrast or
60hz 100million:1 dyn contrast? :3
 

Happy Crayfish

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Not sure what TN is, and the dynamic doesn't matter at all? How do I know which screens are better?
Acer GN246HL 1080p 144Hz Monitor seems good.

According to a guy on youtube you need a DVI-D cable to get 144hz.
100 million to 1 dynamic contrast, 1080p.
Not sure how to see if it's actually good though.
 

Happy Crayfish

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I don't build a pc / get a new screen to play a specific game/do a specific task.
I want it to be good at gaming, I want the graphics to be as good as possible.

My specifications :
GeForce GTX 970 Gaming 4G (4g Vram)
Intel Core i7-4790K (not overclocked) 4.0ghz quad core
16 gb of ram
mobo MSI Z97 Gaming
SSD : Samsung Evo 850

Think thats all important stuff.
 

Happy Crayfish

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I'm getting a screen that does't have Display Port but DVI-D. It has 144hz.
According to youtube I need to use a DVI-D cable to get 144hz and a HDMI cable won't get 144hz.

Monitor : Acer GN246HL 1080p 144Hz Monitor