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4k Monitor: is it supported from my laptops?

Posted: 01 Dec 2019 07:42
by palimmo
Hi,

I'm going to buy a new monitor to be used with my laptop.
Above 27', maybe a 32', maybe a 4 k monitor. It will be used for office applications and (mostly) to watch movies.
I'm not interested in games.

Well. I have 2 laptops, with these graphic cards:

- the "old" one with a nvidia geforce g105m
- the "new" one with a amd radeon r9 m375.

The amd radeon should support 4k, right? See here.
Or I am wrong? See here.

The first one, as far as I found on the web, has a max. resolution of 2560*1600. It means, that it doesn't support 4k.
I'm not surprised.
Will I be still able to use a 4k monitor with this laptop and a resolution e.g. of 1920*1080 (full HD)?

Thanks a lot for your opinions!

Re: 4k Monitor: is it supported from my laptops?

Posted: 01 Dec 2019 21:48
by ilu
I don't know much about 4k and was confused about naming conventions. This https://en.wikipedia.org/wiki/4K_resolution cleared it up for me.


https://www.amd.com/en/products/specifications/graphics says no 4k with hdmi. I couldn't find anything specific to your Radeon card with dp. (I've read somewhere else that it depends on the connecting cable and that display port is the only way.) Maybe this helps https://community.amd.com/thread/191554.

Regarding your second question: Some sources say downscaling results in blurry text and images. There is something called pixel-doubling that is supposed to help but nvidia drivers don't support it. This is just hearsay.

Re: 4k Monitor: is it supported from my laptops?

Posted: 02 Dec 2019 12:59
by kurotsugi
this is also something I recently learn. 4k needs special hdmi port and special hdmi cable too. the physical appearance between 4k and non 4k are exactly same. in our case, you'll also need to learn whether if your hdmi port too.

in short...ditch that 4k plan and use fhd :lol:

Re: 4k Monitor: is it supported from my laptops?

Posted: 02 Dec 2019 17:37
by ilu
To use 4k really needs a lot of graphic power which laptops just don't have. One of those cheap mini pcs made as TV stations can have that power. Or a ryzen 3 xxxxG.

Re: 4k Monitor: is it supported from my laptops?

Posted: 02 Dec 2019 21:01
by palimmo
ilu wrote:
02 Dec 2019 17:37
To use 4k really needs a lot of graphic power which laptops just don't have. One of those cheap mini pcs made as TV stations can have that power. Or a ryzen 3 xxxxG.
Does gaming on 4k require the same amount of resources as watching movies on 4k?
I'm not interested in gaming at all.

thanks.

Re: 4k Monitor: is it supported from my laptops?

Posted: 02 Dec 2019 21:44
by ilu
Really depends on the type of game so one can't say in general. But 4k is a lot more pixel no matter what you do with them. More pixel = more calculation needed = more power consumption - something you don't want to have in a typical laptop. You might get it to work with the radeon card but neither display not laptop were meant to work that way.

And what kurotsugi said about the hdmi spec - needs to be HDMI 2 which your cards don't have.

Why do you want to have 4k anyway? If you want to watch movies there's more involved than just resolution, you need to worry about decoding too - which should be done by the GPU because otherwise your CPU might run out of power or out of cooling.

If you want to spend that much money for 4k why is there nothing left for something like this: https://www.heise.de/select/ct/2019/24/1574180052558996? I'm all for hacking hardware but within reason. Even a raspberry Pi is better prepared for 4k than an older laptop. If you want to tinker, get yourself a RPi4 https://www.heise.de/ct/artikel/Raspber ... 52964.html https://www.raspberrypi.org/blog/build- ... -and-kodi/.

Re: 4k Monitor: is it supported from my laptops?

Posted: 03 Dec 2019 02:28
by kurotsugi
as an ilustration, the computational power required to use 4k is roughly 4 times of FHD. honestly IMO 4k is all about fancy marketing stuff, which might comes from camera sensors size. in reality, it doesn't really matter as long as you doesn't see the dot pixels. try to go into a shop and compare 4k and FHD monitors. I doubt you anyone could see the difference between them unless you watch it reaaaallly close