Question My first PC build!

[GoldenMiles]

I would appreciate if you pointed out any mistakes!I'll put all the components in their own row.

Motherboard: MSI B450 TOMAHAWK

CPU: AMD Ryzen 5 2600x

GPU: RTX 2060 6GB GDDR6

RAM: Corsair Vengeance LPX 16GB (2x8GB) DIMM, DDR4, 3000MHz
[for this I know that my motherboard supports up to 2667 Mhz only, but the 2400 Mhz kit and the 3000Mhz kit have the same price in my country(Romania)..so yeah]
(I know it supports high frequencies, but only overclocked ones, based on my current knowledge)

PSU: Corsair CX Series CX550, 550W, 80 Plus Bronze(afraid this power might be too small for my components)

Storage: HDD WD Blue 1TB, 7200rpm, 64MB cache, SATA III

Case: I guess this is fine -> NZXT H500 Matte Black
I would be thankful if you pointed out any mistakes I made in this build, I am a begginner in PC building, so you can criticize me in anything, thank you!

 

[Finstar]

Looks good though you'll definitely want a SSD as the boot drive.
My personal recommendation would be ASRock B450 Steel Legend over the Tomahawk since i've had really bad experiences with Msi boards.

 

[GoldenMiles]

I've thought about getting an asus prime b-450 before the b450 MSI tomahawk, it's 450 lei, b450 MSI tomahawk is like 500 lei in my country which is 105 euros and the x470 ASUS PRO is almost 1000 lei, which is basically doubled, but it's much better, so is b450 ASUS better than b450 MSI Tomahawk variant, or should I save more money for x470 ASUS PRO variant?
Talking about ssd for the boot drive, which ssd do you recommend?I though about kingston ssd but I heard they were pretty bad for longevity.

 

[GoldenMiles]

Also, forgot to say that I play competitively mostly (Overwatch,cs go,fortnite,etc) and I will buy a 144hz monitor just for that, and I hope this is a fine build for that, maybe streaming a bit (streaming is not my first priority, but I'm just curious if this can do it just fine while on low settings and stable framerate while/while not streaming)

 

[Finstar]

It's totally fine for 144hz, streaming should be doable too.
For motherboard, i think the B450 Prime is ok.
For SSD, if you can afford it, any Samsung one. If you're on a tighter budget then either P1 or MX500 from Crucial.

 

[icedog]

Your PSU is fine an can keep op with power to your system and i will also recomment the asrock b450 steel legend. The storage situation is that you properly should buy a 1tb ssd instead of the hdd but only if it fits in the budget and if it doesn't fir the budget just go with the 1tb hdd and a 240gb ssd

 

[GoldenMiles]

Your PSU is fine an can keep op with power to your system and i will also recomment the asrock b450 steel legend. The storage situation is that you properly should buy a 1tb ssd instead of the hdd but only if it fits in the budget and if it doesn't fir the budget just go with the 1tb hdd and a 240gb ssd

The 1tb SSD would be a bit more expensive than the 250gb mx500 ssd+1tb hard drive,but I'll see other options,thanks a lot for responding to you two!I may wait for other answers on this matter.