Question Which display will be best for gtx1080 (1440p upscaled or 1080p)

[lost66]

Hi all. The pc I built like 7 years ago (with the help of the good people of this forum) is still running well.

Fatal1ty Z170 Gaming-ITX/ac
Intel Skylake Core i7-6700K
Currently running with:
Noctua NH-L9i chromax.black NH-L9I CH.BK Air Cooler and a
GeForce GTX 1080 ARMOR 8G OC
I was running an AIO cpu cooler through an
AORUS GeForce® GTX 1080 Ti Waterforce WB Xtreme Edition 11G
(the gpu sprung a leak but has been repaired)

All this time I have been playing on a basic 21inc Samsung 1080p monitor and I think it is time to upgrade to something a bit more decent.
I found two well priced gamming monitors

Cooler Master CMI-GM238-FFS
- 23.8" Ultra-Speed IPS(In-Plane Switching) Panel

- 2x HDMI 2.0, 2x DisplayPort 1.4 Ports
- Full HD (1920x1080) Resolution
- 144Hz Refresh Rate
- 1000:1 Contrast Ratio
- Brightness: 250 nits
- 178°/178° Viewing Angles
- HDR10
- Adaptive Sync
- Wide Colour Gamut: 90% DCI-P3
- Tilt Adjustment
- 0.5ms Response Time
- 2 Year Warranty
For R3,199.00 (ZAR)

Cooler Master GA271 27" 100Hz QHD 2560x1440 Gaming Monitor​

Product Number CMI-GA271
Panel Type Flat Series
Ratio 16:9
Screen Size 27"
Panel VA 1.07B
Resolution 2K WQHD 2560x1440
Frame Rate 100 Hz
Contrast Ratio 4000:1
Viewing Angle (H/V) 178°/178°
Brightness 250 nits (Typical)
HDR HDR10
Color Gamut sRGB 95%
I/O - HDMI 2
I/O - DP 1
VRR Technology Adaptive Sync, FreeSync Range: Yes, G-Sync Range: Yes
DCR (Dynamic Contrast Ratio) Yes
Response Time 1 ms (MPRT)
Eye Protection Low Blue Light
Anti-flicker Yes
Overdrive Technology Yes
Power Consumption 18W
VESA 100x100 mm
Tilt Adjustment -5°~+20°
R3,499.00

For the most part I play online MpFPS and SQUAD is my game of choice and I dabble in almost every computer related.
What would you recommend to be the best monitor for me and my hardware?

 

[lost66]

What I probably should mention is that squad runs between 50 and 60 fps but sometimes drops lower with the gtx1080 so the 1440 should run wors. But what would the implications be if I ran it at 1080p with up scaling, or use things like fsr3. Is any of this an option with the gtx1080, or will the 1080ti run at least as well as what I have at the moment

 

[lost66]

Or this

Cooler Master GA241 24” Gaming Monitor – FHD (1920x1080) 100Hz, 1ms MPRT, VA Panel, Adaptive Sync, HDMI, VGA, Black - CMI-GA241-EU

Product NumberCMI-GA241
Panel TypeFlat Series
Ratio16:9
Screen Size23.8"
PanelVA 16.7M
ResolutionFHD 1920x1080
Frame Rate100 Hz
Contrast Ratio4000:1
Viewing Angle (H/V)178°/178°
Brightness250 nits (Typical)
Color GamutsRGB 95%
I/O - HDMI1
I/O - VGA1
VRR TechnologyFreeSync
DCR (Dynamic Contrast Ratio)Yes
Response Time1 ms (MPRT)
Eye ProtectionLow Blue Light
Anti-flickerYes
Overdrive TechnologyYes
Power Consumption13W
VESA100x100 mm
Tilt Adjustment-5°~+20°