do i need a psu for a dell/hp brand tower pc

[yusuf_xd]

Looking forward to build a pc. I got an option of buying hp pro desk 400 g5 which is a hp tower pc hosting i5-8500 cpu, intel b360 mainboard, 4gb ram & 1 tera hdd. The link is http://www.bdstall.com/details/hp-prodesk-400-g5-core-i3-8th-gen-4gb-ram-1tb-hdd-brand-pc-43226/
I want to know what else will i need?? Will a monitor complete the whole thing or will i need a psu(power supply) as well.

I got another one like this too which is called dell vostro 3670 mt with an i3 8100 cpu inside. Link is http://www.bdstall.com/details/dell-vostro-3670-mt-core-i3-8th-gen-1tb-hdd-desktop-tower-pc-43053/
I want to know the same thing? Do i need a psu and anything else??

 

[kanewolf]

Both say they include USB keyboard and mouse. All you need is a monitor. 4GB of RAM in that computer will be VERY limiting.

 

[kanewolf]

MERGED QUESTION
Question from yusuf_xd : "What else do i need with a dell/hp brand tower pc"

I'm looking for building a desktop pc. I got an option to buy a dell vostro 3670 MT core i3 8th gen desktop tower pc. It says it has 4gb ram, 1tb hdd, intel b360 mainboard & casing. The link for the product is http://www.bdstall.com/details/dell-vostro-3670-mt-core-i3-8th-gen-1tb-hdd-desktop-tower-pc-43053/

And another one named hp prodesk 400 g5 with only difference in psu: i5-8500. The link is http://www.bdstall.com/details/hp-prodesk-400-g5-core-i3-8th-gen-4gb-ram-1tb-hdd-brand-pc-43226/

I want to know what else do i need with this tower pc. Will only a monitor complete the whole thing or do i have to buy a psu(power supply) as well??

 

[yusuf_xd]

I thought so too. Can i extend ram or it will void my warrenty?? And don't i need a power supply to run the desktop??

 

[kanewolf]

I thought so too. Can i extend ram or it will void my warrenty?? And don't i need a power supply to run the desktop??

No, you should be able to add RAM. I would always recommend that you buy a matched set of two DIMMs. Either 2x4GB or 2x8GB. That way you are guaranteed that the DIMMs will work together. Adding RAM to existing is always a gamble. You don't know if the new and old will play nicely.

 

[yusuf_xd]

Thank for the advice on ram but what i mostly need to know is whether i need to buy a power supply unit or not??

 

[kanewolf]

Thank for the advice on ram but what i mostly need to know is whether i need to buy a power supply unit or not??

You shouldn't. The power supplies that are included, will be small so any additional video card you want to add will have to be a lower end unit, like a 1030.

 

[william p]

The PSUs Dell and HP use are sized to power the CPUs they come with and any slots and bays that are provided. They will usually power a GTX1050Ti in the PCIe slot even if the listed PSU power is 40-50W lower than suggested. Typically they don't have a 6 pin PCIe cable for more powerful cards unless it's a workstation or gaming/multimedia computer. In the business computer market a low PSU wattage is more attractive than a higher one. If you paid the electric bill for thousands of computers you would feel that way too.