Can a lower-watt PSU break a GPU?

[chen1969]

I have had a system built for me that only now I have seen has an insufficient power supply. So far, initially I was unsure as to whether the OS was unstable so I repeatedly kept trying to play Counter-Strike: Global Offensive and the system would crash after about 10-15 minutes, each time crashing in shorter time periods exponentially. I have come to the discovery that the 1060 I originally had is no longer functional so I have replaced it with a temporary replacement of a low-profile GT 720. The minimum PSU requirement of this secondary card is 300W, about 100 less than the 1060 so I thought it would be okay, however I am still experiencing these game crashes and currently afraid to run Counter-Strike in-case it too renders the card unusable, (my motherboard does not have intergrated graphics).

I am not entirely sure where you can find it now but the PSU is a discontinued 350W FSP350-60EPN(80).

The general spec is similar to the products here: https://www.thephoenixtech.co.uk/collections/gaming-pcs/products/phoenix-aurora

1060:
https://www.scan.co.uk/products/palit-geforce-gtx-1060-stormx-3gb-gddr5-vr-ready-graphics-card-1152-core-1506mhz-gpu-1708mhz-boost

low-profile 720 (similar):
http://www.pcupgrade.co.uk/productdetails.asp?productid=15241&categoryid=478

Processor:
https://ark.intel.com/products/47925/Intel-Xeon-Processor-E5620-12M-Cache-2_40-GHz-5_86-GTs-Intel-QPI

 

[alth0triplemadang]

Can a lower-watt PSU break a GPU?
Simple answer: Yes.
Detailed explanation:
Using lower wattage PSU can broke the GPU or even the entire system!
The PSU that you mentioned above is a OEM PSU that came with prebuilt PC. The quality of that PSU is decent for standard office computers but TERRIBLE for gaming system like your PC.
NVIDIA states that you need 400w minimum to power that GPU, and you use your 350w PSU and this problem happens...
Sounds logical to me.

Quick solution is:
REPLACE YOUR PSU
Get a good 500w or higher if you can afford one.