HP Omen 15 (2020 version) connecting to a montior. Which port to use?

[xRingo]

I have a omen 15 2020 version coming to me on Monday. I plan on buying a monitor (1080p, 144hz) and connect it to my new laptop. I'm unsure if the thunderbolt port is connected to the dgpu or not. I want to get the full 144hz from the monitor. Do I buy a thunderbolt cable to DisplayPort or mini dp to display port? Which port is directly connected to the dedicated gpu? Where I am located currently, no stores have these cables, so I have to order from amazon and pay shipping which is about 60 bucks. So I need to get it right. 

Any advice would be greatly appreciated.

[banhien]

@xRingo 

Is it an HP OMEN Laptop - 15-ek0013dx ? Its specs

         https://support.hp.com/au-en/document/c06656951

The specs does not show its available ports. Manual of the series shows (pages 2-3) it has the following ports which are suitable for external monitors

• HDMI v2.0a supporting: up to 4096 × 2160 @ 60 Hz with HDCP 2.2
• USB 3.2 Gen 2 Type C with Thunderbolt™ Gen 3 technology (right side) (select products only)
• Mini DisplayPort 1.4

The normal rule is refresh rates going up, resolution will go down. The best option is Thunderbolt™ Gen 3 monitor then DisplayPort 1.4 and the last one is HDMI (only 1920 x 1080 @ 120Hz - from my test on my HP Omen).

Regards.

[xRingo]

Thanks for the reply. Yes that is the model number of my laptop. I brought it from bestbuy.  So if I purchase a thunderbolt/usb c (Like this from amazon; https://www.amazon.com/DisplayPort-uni-Thunderbolt-Compatible-More-Gray/dp/B075V27G2R) I will be able to get 144hz @ 1080p?  The monitor I want to buy is this https://www.amazon.com/Gaming-VG249Q-Monitor-FreeSync-DisplayPort/dp/B0829S7178/?th=1, which has a DisplayPort. 

I'm just trying to figure out if the thunderbolt port and the mini DisplayPort is wired to the dedicated Nvidia gpu or the intel one. 

[DrakenFX]

Every Display output is wire to the dGPU , You can easily find this out by opening the Nvidia Center... 

Currently using HDMI but my monitor is 60hz , and as far as I know HDMI 2.0 Is capable of running  1080p @144hz with the proper HDMI Cable as long your monitor supports it.