Lfc

The 400w PSU has enough wattage.
 
The question lies on how good the 400w powersupply is. 
 
It being a VS (probably grey label) suggests its fine to run, but should probably change it very soon. 

thx @LukeSavenije
 
so you can't, PSU upgrade in the way before the GPU.
 
tier B at least

oh.
 
no.
 
dont. that is extremely overpriced.

presuming you continue healthy activities, no, regardless of how absurd the original image is

looks like me lol

the mortar is ostensibly the micro ATX version of the tomahawk, so choose as you see fit. Both will effectively achieve the same thing.

A reputable power supply should be able to continuously provide the amount of power which it is rated for, if the PSU is of extremely questionable quality then it be represented by it's peak power output which is a red flag to look for especially on budget PSUs. Quality does not have anything to do with wattage necessarily, just because one PSU is good quality does not mean that it should be able to deliver more that the rated wattage (not peak wattage). There are many really cheap and bad quality power supplies available which are marketed to be able to deliver high wattage. If you are comparing a somewhat decent power supplies that are rated and tested for a certain wattage at continuous load, the better quality one is not necessarily going to be able to deliver reliable power at higher wattages than rated for continuously.

What powersupply is it?
 
You could run your system on a good 400w powersupply. 
 
It all depends on the quality of the specific unit. 

a quad core i5 will consume 70 watts or so. An RX 560 will consume close to 100 watts. basically, you can get by just fine with a decent 400 or 450 watt PSU, which will give you a ton of room to upgrade.
Tier B and up is recommended, usually the CX450 is quite cheap.

Yes, it's better. 
The RM. Also, fyi it doesn't matter where the fan and capacitors are from, that doesn't affect their quality at all. The Corsair fan was probably made in China, as was the PSU itself.

RM is better, but the RMx would be even better.
Do you actually need 850W though?

Alright thanks 

The X570 motherboards supports PCIe 4.0 where the B450 only supports up to PCIe 3.0.
 
If you want the best possible upgrade path then I would go with a x570 board. 

what do you think I should go with

No need add fans for now.

Both are okay but I'd go Gskill. 

Definitely 2x16 as it's easier on memory controllers and allows for future upgrades as said above. 

@Lfc I assume they are relatively the same cost.  In my opinion I would go with the 2x16 because that will allow you to add more later if you need to (ever).

I wanna say you have.. No YouTube 🤣

AX and the prime are the same PSU. 
 
 
 
One is a Seasonic Prime, while the other a Delta GM. 
 
One great singlerail PSU for lower wattage PSUs (the AX).
 
And the Antec a solid multirail PSU. 
 
 
The Antec being Tier S on the PSU tierlist the other Tier A. 
 
Which doesnt perfectly reflect their capabilities, but for high wattage the Antec is the better choice. Even if its fan and noise levels arent great

Corsair's AX Line is their top end model. If you need it depends on your particular use case.
The Corsair RM and the Antec both come with a 7 year warranty while the Corsair AX has a 10 year warranty.
That does not necessarily mean the AX Line is better but for 24/7 use I would argue it is more reliable long term. You could also consider the Seasonic Prime Ultra 1000W that has a 12 year warranty.
In the end it comes down to features. For example, the Seasonic unit is rated at around 12 db(a) while the Corsair AX is rated at closer to 23 db(a) under full load. Both PSUs are silent while idling. If you have the time you can check up on detailed reviews that take those units apart and check for the layout and component selection but I would assume that both companies are not cutting corners with their top of the line products.
 

similar, I'd say
 
both have advantages and disadvantes
 
TXM is a bit better build quality, is semi-modular and is a touch on the loud side with it's fan
 
RM is more silent, slightly worse build quality, does meet a newer ATX efficiency standard, but starts to make a whine-like sound when switching between powerstates (~90w) because of how the controller is set

RM is better electrically (specifically, it has better ripple), and follows the latest ATX spec version while TXm does not. Both are considered about the same in noise level.

that Hong Hua fan is the same... it's only the frame and the controller that differ
 
and RM is meant to be just below RMx

Dude, it's called QVL...
The fan would be a cost-cutting measure, yes, but there's still zero problems with the fan being used.