do i need a separate PSU given that i will not be using a graphics card

[zalkernine]

i am planning to build a new PC this week. I've got all the parts covered. but i am stuck with weather to buy a separate PSU or not. The PC will be powered up by I5 8400 and a basic ssd, a HDD, 8 gb of ram and simple stuffs like this. But i wont add a graphics card. so can i skip the PSU for now considering it's a budget build 

 

[Slottr]

Hm? You can't power on the computer without a power supply

[Electronics Wizardy]

well if your building a pc you need a psu, no matter what your doing on it.

 

Id probably get a 2400g personally though

[kameshss]

uhmm.. but you need a PSU to power the system anyway.

[Daniel Z.]

You need a PSU, unless I misunderstood and you’re planning to pull an Austin.

[Caennanu]

In the most simple way i can answer your question: You will need a psu of atleast 350 watt's.

 

To elaborate:

you're talking about buying a seperate psu. Now that gives us some questions.

Do you have a psu, that came with the case perhaps? in that case i would recommend getting a proper psu, as generally the quality of 'free' power supplies is not very good.

If you have a psu, from another sacreficial build, let's take a look at that and post us the stats. Seeing your build i'm geussing you won't need more than 350watt's, but its never a bad thing to give yourself some headroom and opt for a 450 or 550 if you have a chance (i would recommend starting with a 550, so that if you buy a graphics card in the near future, chances are you might not need to buy a seperate psu by then).

 

 

[Herman Mcpootis]

27 minutes ago, Caennanu said:

In the most simple way i can answer your question: You will need a psu of atleast 350 watt's.

for a lone i5 8400, even a sub-100w PSU is enough.

[homeap5]

Hi. In case nobody answer your question - yes, you need PSU. I hope you'll get more answers.

[zalkernine]

3 hours ago, Slottr said:

Hm? You can't power on the computer without a power supply

hey i forgot to mention 
i was actually talking about using a PSU that comes with the case built in 
and my question is as i am not gonna use graphics card do i need to buy a separate branded psu ?

[zalkernine]

3 hours ago, Slottr said:

Hm? You can't power on the computer without a power supply

hey i forgot to mention 
i was actually talking about using a PSU that comes with the case built in 
and my question is as i am not gonna use graphics card do i need to buy a separate branded psu ?

 

[zalkernine]

1 hour ago, homeap5 said:

Hi. In case nobody answer your question - yes, you need PSU. I hope you'll get more answers.

hey i forgot to mention 
i was actually talking about using a PSU that comes with the case built in 
and my question is as i am not gonna use graphics card do i need to buy a separate branded psu ?

 

[zalkernine]

3 hours ago, Caennanu said:

In the most simple way i can answer your question: You will need a psu of atleast 350 watt's.

 

To elaborate:

you're talking about buying a seperate psu. Now that gives us some questions.

Do you have a psu, that came with the case perhaps? in that case i would recommend getting a proper psu, as generally the quality of 'free' power supplies is not very good.

If you have a psu, from another sacreficial build, let's take a look at that and post us the stats. Seeing your build i'm geussing you won't need more than 350watt's, but its never a bad thing to give yourself some headroom and opt for a 450 or 550 if you have a chance (i would recommend starting with a 550, so that if you buy a graphics card in the near future, chances are you might not need to buy a seperate psu by then).

 

 

 thanks for your reply and i am thankful that you got my point that forgot to mention

 

hey i forgot to mention 
i was actually talking about using a PSU that comes with the case built in 
and my question is as i am not gonna use graphics card do i need to buy a separate branded psu ?

[LukeSavenije]

4 minutes ago, zalkernine said:

i was actually talking about using a PSU that comes with the case built in 

ehm... which one?

[ZXR]

3 hours ago, Herman Mcpootis said:

for a lone i5 8400, even a sub-100w PSU is enough.

Lol those even exist?

[ZXR]

44 minutes ago, zalkernine said:

 thanks for your reply and i am thankful that you got my point that forgot to mention

 

hey i forgot to mention 
i was actually talking about using a PSU that comes with the case built in 
and my question is as i am not gonna use graphics card do i need to buy a separate branded psu ?

Most likely no, what is the PSU (wattage, efficiency, brand, etc)?

[Caennanu]

3 hours ago, Herman Mcpootis said:

for a lone i5 8400, even a sub-100w PSU is enough.

i beg to differ. mainboard, ssd, hdd, memory, they all take power.

Quick search on the interwebz for a psu calculator, i came across https://outervision.com/power-supply-calculator.

When submitting the above mentioned specs, i come to 243 watt as a recommendation.

 

So yes, maybe 350 watt is a little high if you take this advice into consideration, but i'm sticking with my opinion you will want atleast a 350 watt.

adding an additional HDD or SDD, maybe an optical drive (do these still exist?) add usb hubs, and it will rack up fairly quick.

 

https://outervision.com/b/C4uHYf

 

When using another psu calculator, this time from bequiet. i come to 113 watt. This however offers less options.

https://www.bequiet.com/en/psucalculator

Edited June 27, 2019 by Caennanu

[Herman Mcpootis]

1 minute ago, Caennanu said:

i beg to differ. mainboard, ssd, hdd, memory, they all take power.

Quick search on the interwebz for a psu calculator, i came across https://outervision.com/power-supply-calculator.

When submitting the above mentioned specs, i come to 243 watt as a recommendation.

outervision is closer to a random number generator than an actual wattage calculator.

https://www.techspot.com/review/1502-intel-core-i5-8400/page4.html 143w under load from the wall, not anywhere close to the estimate.

[Caennanu]

1 minute ago, Herman Mcpootis said:

outervision is closer to a random number generator than an actual wattage calculator.

https://www.techspot.com/review/1502-intel-core-i5-8400/page4.html 143w under load from the wall, not anywhere close to the estimate.

noticed that too, editted the post with another calculator which indeed comes lower.

[homeap5]

1 hour ago, zalkernine said:

hey i forgot to mention 
i was actually talking about using a PSU that comes with the case built in 
and my question is as i am not gonna use graphics card do i need to buy a separate branded psu ?

 

All cases I know that comes with PSU was crappy cheap cases with crappy PSU. So don't worry about wattage, be worried about quality of that PSU. Except it's some premium case made by Antec or BeQuiet etc.

[Caennanu]

So a long answer short.

If the power supply is rated at 150watt or higher, you can use it, however i do not recommend it.

Instead i recommend you to get a branded version. 

 

cheapest i could find locally, is gigabyte PW400. (have no personal experience with gigabyte tho)

Next up is cooler master elite V3, its a 500 watt psu tho. Fairly sure others will have additional idea's and suggestions.

[Herman Mcpootis]

35 minutes ago, Caennanu said:

So a long answer short.

If the power supply is rated at 150watt or higher, you can use it, however i do not recommend it.

Instead i recommend you to get a branded version. 

 

cheapest i could find locally, is gigabyte PW400. (have no personal experience with gigabyte tho)

Next up is cooler master elite V3, its a 500 watt psu tho. Fairly sure others will have additional idea's and suggestions.

Brand names mean nothing with power supplies.

[OrionFOTL]

5 minutes ago, Herman Mcpootis said:

Brand names mean nothing with power supplies.

Or with any consumer item ever. How fast is an MSI graphics card? How fast is a Samsung drive? ¯\_(ツ)_/¯

[Herman Mcpootis]

1 hour ago, OrionFOTL said:

Or with any consumer item ever. How fast is an MSI graphics card? How fast is a Samsung drive? ¯\_(ツ)_/¯

I dunno, but it it says samsung so it must be fast!

[Dedayog]

3 hours ago, zalkernine said:

 thanks for your reply and i am thankful that you got my point that forgot to mention

 

hey i forgot to mention 
i was actually talking about using a PSU that comes with the case built in 
and my question is as i am not gonna use graphics card do i need to buy a separate branded psu ?

You'll be fine with the PSU that comes with the case.  It won't be the best, and may not last for more than 5 years, but it'll power your system.

 

 

[seon123]

4 minutes ago, jstudrawa said:

You'll be fine with the PSU that comes with the case.  It won't be the best, and may not last for more than 5 years, but it'll power your system.

 

 

Interesting conclusion, considering you don't know which case and PSU they're getting.