wassil

It crashes and blue screens, typically, yes.

crashes. Scores mean nothing in terms of stability. Its all if you can maintain the load without crashing. 

hey bro i bought a cooler master fan i faced the same ''problem'' but don't tight the screw to the max just a little turn so it can hold place and go tight the next one even if it dosen't reach the hole push it with your hands and be carefull to not mess the thermalpast 

It the temps on the CPU/GPU are under the temperature throttling threshold, then I see no reason why it would hurt your pc.

No, you will need extra electricity but it will be fine. 

It won't hurt your pc if thats what you're asking.

No

No

If they're connected directly to the power supply they'll run at 100% speed all the time.
If they're connected to the motherboard you can control them in the BIOS or using software.

Mb= fan control, if hot, fan go fast, if cold fan go slow and less noise.
 
But if case, fan go fast all the time.

so no need to spend the extra money for the m.2 (gaming only)

check out this LTT video: 
 

nope your wallet is safe

There's no massive risks per se, but if you get a hot case with little airflow your components will run hotter so you might not be able to overclock as far, or the boosting alogorithms for CPUs/GPUs won't boost as high as they might be able to.

In the vast majority of cases, two front intake and one rear exhaust does an excellent job. Simple, easy.

general rule is 2 or 3 (2 is fine, 3 is better) in the front positioned as intake fans, (drawing fresh air through the front of your case.) and 2 the back. 1 on the back panel and the other on the top. both set to exhaust: (pushing hot air out through the back and top of your case. )

This all depends on your case, but would suggest as above as a minimum.

budget?

I think there is one issue, and a few downsides.
 
The issue is airflow, will it be good enough.  Though making a good decision on which case to get will assist with that.
 
The rest are downsides related to space, layout, ease of building and features.
 
I bought a cheap case recently, I picked it based on airflow more than anything, and it has great airflow.  The problem was the build was harder than it should have been.  The cable routing and management was difficult and annoying at times.
 
My board supports 6 SATA connections, but I can't for the life of me fit more than 3 HDD in the system with an SSD stuck to a random area.
 
Doing anything on the board, changing GPUs, changing RAM, reseting the bios, are all more difficult than it was in my old far larger case.
 
Those are my thoughts on cheap cases.  Though to be fair, you can spend a lot of money and face the same issues.

Case is just a box. How pretty do you want it?

it is around 5-15% difference. for 50 dollars it is worth it.

That motherboard is not guaranteed to be compatible with 3rd gen ryzen out of the box. If you're buying it from a store, you can check and see if it has the "ryzen 3000 ready" badge on it.
 
The B450M A Pro is very different from the B450 A Pro. The micro ATX board is quite bad, with an uncovered VRM, so I would not recommend a 6 core CPU.

yeah most others I saw were trash and it is also hard to tell what some models are because the title doesn't match a very specific name.

the corsair CV550 or CV650, Gigabyte PB500

IDK, a lot of the others may be fake. It is pretty easy to put up a graph and a video of gameplay.