Less power, can cause damage to all parts. It can especially damage a graphics card if it is under powered. Infact, in a few months I bet you your entire system will blow up because of that power supply.
Power is same not less I am using simple 946 motherboard with entry level nvidia pci express graphic card
hmm whats the difference, I am using local from 6 years now, and I believe in what you say
Last year my wire burnt but smps is running without problem
But thinking why and how branded won't give problem? and keep me safe.