Power Supply Advice Needed

You are nowhere near needing 600W, so you could safely downsize.

EVGA G3, Corsair RMx series, Seasonic is also good, Leadex Superflower...

Judging PSU quality by brand name just doesn't work. Seasonic is the OEM for many vendors and you will oft see peeps arguing about which is better when Seasonic made both of them and they are on the same platform. You have 1050 Ti. To determine how big a PSU you need start here:

https://www.nvidia.com/en-us/geforce/products/10series/geforce-gtx-1050/

Maximum GPU Temperature = 97C
Graphics Card Power (W) = 75W
Recommended System Power (W) = 300W
Supplementary Power Connectors = None

Click to expand...

As a check, Guru#D bases their recommendations on 'at the wall" power measurements.

http://www.guru3d.com/articles_pages/msi_geforce_gtx_1050_and_1050_ti_gaming_x_review,7.html

Here is Guru3D's power supply recommendation:

GeForce GTX 1050 (Ti) - On your average system the card requires you to have a 300~350 Watts power supply unit.

If you are going to overclock your GPU or processor, then we do recommend you purchase something with some more stamina.

Click to expand...

Other comments:

1. The CX series from Corsair was best avoided, a very low budget PSU.

2. I agree with sticking at the same general wattage size.... the problem with lower wattage PSUs is that most of them are poor quality, the ones that are, are expensive due to low demand and lack of any economies of scale.

3. There is 100 % full modular and what is oft called hybrid or semi modular.

a) A non-modular PSU leaves you with excess wires for a somewhat unsightly installation if you don't have a PSU shroud in your case. In certain instances this can affect air flow,

b) With fill modular, all your cables are modular. There is no advantage to this option unless you plan to resleeve all the cables. It also has several disadvantages such as increased cost, additional failure points, increased resistance and slightly lowered efficiency.

c) Hybrid modular gives you a best of both worlds approach. In this design, all absolutely required cables are hard wired ... after all what's the advantage of having a modular cable if you can't leave it in the box. It also lowers cost, decreases failure points and slightly increases efficiency

4. Generally, the goal in building a PC is to build what id generally known as a balanced system. You don;t invest in the most expensive CPU and than go for a low end video card ... you don't add an SSD if you don't have a GFX card in the top 2 tiers.... the money is just "better spent" elsewhere.

Looking at your components, I would not invest in A Seasonic Prime series, EVGA P2, Superflower Leadex, Corsair HX etc ... Your system components are simply not in a class that could benefit from the improved PSU quality.

I would suggest a Seasonic S12 520 or 620 ... of if you want to go full modular the M12 520 / 620 is the same PSU w/ modular cables. See review below

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=185

Seasonic S12 520 ($40)
https://www.newegg.com/Product/Product.aspx?Item=N82E16817151094

Seasonic S12 620 ($50)
https://www.newegg.com/Product/Product.aspx?Item=N82E16817151096

Seasonic M12 520 ($45)
https://www.newegg.com/Product/Product.aspx?Item=N82E16817151093

Seasonic M12 620 (50)
https://www.newegg.com/Product/Product.aspx?Item=N82E16817151095

The M12 520 / 620 seems to best fit your stated goals.