Janne

3900X because i think having this many cores is cool

You don't need the opinion of the community. Just looking at benchmarks you can see intel's single core performance is faster

Yeah the speed upgrade is done automatically. 3600 has a base clock of 3,6 GHz, which means it's guaranteed to hit at least that frequency under load. Boost clock is 4,2 GHz, which means that if the conditions (temperature, power) are met, it will boost automatically up to 4,2 GHz.

Yes indeed you need X570 if you want PCIe 4.0. Gigabyte's Aorus Elite and Asus' TUF gaming are the most recommended X570 boards. Basically the only thing you should tinker in the BIOS is enabling XMP profile of the RAM, anyone can do that. And even that isnt necessary, it just makes your RAM run at 3000 MHz instead of 2133 MHz.

I don't know that much about the engineering of CPUs, but as far as i know threads aren't physical things like cores are, they are kinda like a software trick that practically works like a core. And i don't really understand what you are asking about AMD vs intel, i can just say that Ryzen 3600 is the CPU i recommend to you the most IF you indeed want a CPU upgrade. I have no idea why you experience stutters in your games. That RAM is good yes. X570 is the best platform, but of course more expensive. I recommend B450 if you have any technical aptitude and can install a new BIOS for the motherboard.

1. 100% means all threads fully loaded. 50% then kinda means half the threads fully loaded, so 6 in the case of 3600. Also i think you have cores and threads backwards, 1 core = 2 threads 2. That's just how ryzen works, it's very dynamic like GPUs. They are clocked very high out of the box. Also you shouldn't really look at CPU usage/frequency in games, it's a pretty useless metric and what i'm saying is that AMD at 4,2 GHz is faster than intel at 4,2 GHz

equal clock speed

Definitely 3,9 GHz in all core loads, and definitely 4,2 GHz with light single core stuff etc. Keep in mind that ryzen at frequency 1 is faster than intel at frequency 1 5,8 GHz is impossible without sub-zero temperature cooling on literally any processor on the market right now

No it can't. Ryzen CPUs are pretty much pedal to the metal straight out of the box. If you are lucky you can get 4,2 GHz on all cores

Probably not, i've observed that this CPU works basically like modern graphics cards, it tries to boost as high as possible with the available resources. And if temperature isn't limiting you then i really doubt lowering voltage will help. It will probably make you lose performance

I think AMD should send a pamphlet with this info with every zen 2 CPU they sell: https://www.reddit.com/r/Amd/comments/cbls9g/the_final_word_on_idle_voltages_for_3rd_gen_ryzen/

They are not too high if your CPU temperature is 70

This is exactly what is wonky for me with my aorus elite board. XMP profile really doesn't like to change the DRAM voltage, i always have to manually set it to 1,35 V. Also when i try to OC my memory so far it can't even boot, it "resets" BIOS settings apparently but in reality it doesn't reset everything. I have to "load optimized defaults" if i want to boot agai Your RAM is rated for 1,35 V with XMP enabled

Simply manual all core OC 4350 MHz, 1,325 V. Gotta say i'm not really liking OCing this chip, i think it would take A LOT of effort to make overclocking worth it because you would have to basically find all the single core frequencies by themselves. Single core 4350 MHz isn't really impressive when at stock it's 4650 MHz

Check DRAM voltage, at least on my gigabyte board with an older bios XMP won't change the voltage