Strong CPU with igp or medium CPU with discrete graphic card ?

[Pierre]

Hello,
I hope this is the right place to post this question.
I am on the market for a new computer for 2021. My main computer is using an i7 6700 with the IGP.

I wonder if, for almost the same budget, I should go to a Ryzen 7 4750G or an i5 10400 + Radeon RX 5500XT. (If the drivers are opensource that's a big + for me)

I use Linux since 1996 (Debian stable). I don't play any 3D games.
The only use I would have for a GPU is the OpenCL acceleration, in Darktable in particular (and also Gimp, Imagemagick or any media software)

Any thoughts are welcome.

[MiltonRose]

To be honest, I would be guided not by people's opinion, but by numbers, in particular, how much discrete graphics will speed up work in specialized software. About a year ago we discussed this topic on 5700xt - it worked with big problems with OpenCL drivers. Maybe, situation is better now.

[Pierre]

Thank you for this answer. Discrete graphics and OpenCL is not something I am familiar with, so I need advice from people used to this to balance the pros and the cons.

What I know is that it's worth in terms of speedup in software that use OpenCL. But I am not using these software all day long...

What I don't measure exactly are the disadvantages of a discrete gpu (I know what they are, but not to what amount)
1- More heat, so how much more noise ? Silence is very important for me.
2- Might cause drivers problems (I would like to keep using stable debian). How often does drivers problem occur ?
3- Will I get OpenCL working with Ryzen 7 4750g apu. Hard to know since this chip is pretty rare.