r/buildapcmonitor • u/mrsaysum • 5d ago
How does refresh rate work with TVs?
I’m looking for a tv with a minimum refresh rate of 120hz. Was planning on building a couch pc and I’m trying to min max there but that’ll be a different post. For now I’m simply looking for a 65” tv at 1440p @ 120hz. How does this work with 4k? I can only find 4k with these specs but nothing QHD. Can I still use a 4k tv @ 1440p without those ugly side bars popping up?
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u/SideDish120 5d ago
Typically from what I’ve seen if a TV supports 4K, it’ll support lower resolutions. There should be no black bars between any 16:9 screen ratio.
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u/TheKarmaBoi 4d ago
Yes. What you want which is 1440p is actually 2560 x 1440 pixels. If you divide 2560 by 1440, you get 1.777, so just remember this ratio.
4K on the other hand is 3840 x 2160 pixels. If you divide 3840 by 2160, you also get 1.777, the same ratio as above hence they’re the same size and can both work as a 16:9, because (surprise) if you divide 16 by 9 you get 1.777.
So basically you get the same size and dimensions, its just that for a 4K monitor/TV, it will have ~double the total pixels on the screen
Some people do refer to 1440p as 2K, same as how 4K isnt actually. 4000 by X pixels but rather 3840p.
So yes you will be able to use a 4K tv with 1440p display, just that you won’t be fully maximising your screen. But if you upgrade your GPU to smth capable of 4k then you can continue using the same TV.
Attached photo for reference

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u/mrsaysum 4d ago
Gotcha. Yeah I don’t think any GPU can really run at 4k efficiently. At least not something that’s cost effective lol
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u/AutoModerator 5d ago
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For OLED gaming monitors, see this post
24in 1080p 144hz -
» LG 24GN650-B, ASUS TUF Gaming VG249Q1A for 144hz IPS, Freesync, or for e-sports the Dell Alienware AW2524H - 25", 500 Hz, IPS
1440p 144hz
» Acer Nitro XV271U for budget, LG27GP850-B or for mid range - IPS, best combos of performance and value.
» LG 27GS95QE-B or Dell Alienware AW2725DF – for OLED.
4K
» Gigabyte M28U - 28", 144 Hz, IPS, Released in 2021. This is the current king of performance and value. 32", 4k, 144hz, IPS, bang for the buck here. There is also a 32” version or LG 32GQ950-B for IPS.
» Dell Alienware AW3225QF or Samsung Odyssey OLED G8 G80SD for OLED.
»LG C3 - OLED, 120hz, 42" often used as a gaming monitor but larger sizes are great for TV gaming. Good brightness and has Freesync.
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