ATX/ BTX/ ATX12/ EPS12V/ SFX12V

[The_Atomic]

Looking for a PSU to go with my build but getting rather stuck.

 

On PC part picker there are all of these options (ATX/ BTX/ ATX12/ EPS12V/ SFX12V) and ive no clue which ones are newer and or better to use for a high end system.

 

Here is my build so far: https://uk.pcpartpicker.com/list/rN7Lhq

 

Im planning on going for a 850w psu to be safe and should allow for upgrade in the future if needed? I think?

[Totalschaden1997]

Those refer to the form-factor of the PSU

Pcpartpicker automatically filters out the ones which are of another formfactor / too big for your case so you're fine

[mariushm]

You want an ATX power supply, that's the standard for regular computers.

BTX was a standard made by Intel where the components inside the computer were arranged in a different way.

SFX is a standard for "small form factor computers", half-height, smaller power supplies

 

ATX12 means the power supply uses the "improved" ATX standard which means the power supply has a 12v cable to power the processor. Before Pentium 4, processors were powered using energy from 5v from the power supply, a revision of the atx standard added the special cpu 4 pin and 8 pin power connectors to power the processors using 12v from the power supply.

Pretty much any ATX power supply these days can be considered ATX12v because it will have a 4 pin cpu power cable.

EPS12 - EPS is the 8 pin cpu power connector used to power hungry processors. It was more common on server motherboards but eventually regular motherboards started to use it.

Some lower end (<500w power supplies) may not have this 8 pin cpu power connector and only have 4 pin cpu power connector.

 

Any quality 550w or higher power supply will have this EPS (8 pin cpu power) connector.

 

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As for your build... your computer won't consume more than 350w on the stock frequencies, maybe up to 450w if you overclock heavily.  A good quality 650w power supply will be enough for that system.

And really, save your money, there's really no point in buying so many fans unless you want to RGB-ify your system

The case comes with  THREE  140mm silentwings fans which should give enough airflow for the case.