The AK620 features six nickel-plated copper heatpipes which extend from the cooler base up into both towers of the twin fin stack configuration.
Source: [DeepCool AK620 Review](’
DeepCool AK620 Review: More Affordable Excellence | Tom's Hardware’
) - tom’s HW.
please buy a AK400 or AG400 or max to max AG620 (though it maybe an overkill) dont buy AIO for 5600x
I’m not going to buy AIO.
I’ll decide between AK620 or the Noctua D15 Cromax Edition and get the one I want.
The AK400 with an additional fan in a push-pull configuration would keep your budget low and provide sufficient cooling. As others have said, you definitely don’t need an AIO but the extra fan would give you a marginal improvement.
What’s your budget ? To be honest 5600X isn’t that hot so even the cooler that comes in a box should be fine. Deepcool AK620 is an overkill for this (but it’s good to have if your budget allows it). Deepcool AG400/AK400 also solid options and a less expensive than AK620.
I have decided on the Noctua D15 Chromax and will be ordering it soon.
You could get by with a CPU fan that 7k less and put those savings into your GPU or another purchase. It’s only a 65W CPU.
It’s fine… sometimes feels good to splurge! And I love the muscle car industrial look of the D15.
Lol even I’m using a D15s (vomit color) with mine.
The all black stealthy Chromax Edition of the D15 with it’s aggressive industrial look is very sexy looking.
Would you believe it, I’m one of those who actually over time began liking the signature beige & brown color scheme of the Noctua fans 
I’ve always liked the beige and brown. It’s very ‘Noctua’.
I’ve also liked it, color is least important for me because my PC is hidden in a wooden cabinet. Even if it was out exposed I would still not hate the color, on a different note I would not buy a Noctua because Artic beats it in all (talking about fans) specially 140mm fans.
