I've just put together a spec for a new PC and it has the standard 350W PSU. The site tells me, when I click on Proceed, that the system only needs 281W, so that seem fine.
The PC has the following:
Processor (CPU)
AMD A8-5500 Quad Core APU (3.2GHz) & Radeon™ HD 7560D Graphics
Motherboard...
