Is my 280w psu enough?

[ilmarikka]

So I have a system that has an i3 7100 and a gtx 1050ti and an ssd, hdd and a couple fans.
So the main question is that i am wanting to upgrade my i3 7100 for a i5 6400 or i5 6500 because the i3 only has 2 cores and its bottlenecking my gpu for an example in gta v. So can my 280w psu from a prebuilt lenovo legion y520 tower handle that cpu and those parts that i have or will i need to upgrade my psu as well?

 

[ss202sl]

Nvidia recommends at least a 300w. It depends on the quality of the PSU
https://www.geforce.com/hardware/desktop-gpus/geforce-gtx-1050-ti/specifications

 

[ilmarikka]

But the tdp for the i5 6400 is 65w i remember and the gpu 75w that combined it would be 140w so isnt 140w enough headroom to use for the storage and fans so i think i should have approx 100w left? But i am not sure correct me if i am wrong

 

[DSzymborski]

But the tdp for the i5 6400 is 65w i remember and the gpu 75w that combined it would be 140w so isnt 140w enough headroom to use for the storage and fans so i think i should have approx 100w left? But i am not sure correct me if i am wrong

Cheapo power supplies frequently can't do near their rated output in +12V power, which is what you need for modern parts. Written on the power supply, there should be a number followed by A next to +12V. I've seen 300W power supplies that couldn't realistically power a PC of 150W, the 300W only really being available for a Pentium III era PC that had different needs.

 

[ss202sl]

It depends on the quality of the PSU. Not all 280w PSU's actually deliver 280W

 

[ilmarikka]

Okay i will check the brand and the current 12v rail tomorrow after school because now its night in my country

 

[Karadjgne]

Pc is already running just fine as is. The differences between power draw on the i3 and i5 are minimal at best, so really won't impact the current psu much at all. Don't bother looking at a i5-6400, it's a dog. Generally tied or beaten in most all games by an i3-6100. One of Intels somewhat larger bone headed ideas to release. Best bet all around would be i5-7500 as it's a direct drop in that won't mess with any settings, ram, drivers, instruction sets etc because there are differences between skylake and kabylake cpus beyond the similar socket.

Entire pc is pulling @200w at best, adding 14w more difference between a i3-7100 and i5-7500 is negligible.

 

[DSzymborski]

Pc is already running just fine as is. The differences between power draw on the i3 and i5 are minimal at best, so really won't impact the current psu much at all. Don't bother looking at a i5-6400, it's a dog. Generally tied or beaten in most all games by an i3-6100. One of Intels somewhat larger bone headed ideas to release. Best bet all around would be i5-7500 as it's a direct drop in that won't mess with any settings, ram, drivers, instruction sets etc because there are differences between skylake and kabylake cpus beyond the similar socket.

Entire pc is pulling @200w at best, adding 14w more difference between a i3-7100 and i5-7500 is negligible.

It's partially my fault; I misread and thought they were *adding* a 1050ti, not that they didn't already have one.

 

[Karadjgne]

(saved for posterity)

(and later blackmail)

No worries, I got your back