XFX R7 360 with 400w PSU works well?

[Sunwoo_1]

There was ATX case with Rosewill 400W PSU unit deal it was pretty nice price . so I ordered that
and Today GPU is delivered and I read the manual and it said They recommend to have over 500w
Case will come next Thursday. Now I am wondering.. should I order over 500w PSU?

Here is the detail of my system
CPU : AMD FX-4350 4.2 GHz
GPU : XFX Radeon R7 360 DirectX 12 R7-360P-2SF5 2GB
Mother board : GIGABYTE GA-78LMT-USB3
Ram : Crucial Ballistix Sport 8GB (2 x 4GB)
SSD : Kingston SSDNow V300 Series 2.5" 120GB

 

[basroil]

A good 400W unit fill work, but I would NOT trust a no-name unit (Rosewill does have some decent units, but showing no part number for the PSU is not a good sign). You can get a Seasonic S12II 430W for <$50 usually and that will definitely serve you well. 550W G2 from EVGA is only $10 more though, and that might be even better http://pcpartpicker.com/part/evga-power-supply-220g20550y1

 

[imrazor]

Is this your card? http://xfxforce.com/en-us/products/amd-radeon-r7-300-series/amd-radeon-r7-360-double-dissipation-r7-360p-2df5
If you scroll to the bottom of the page, and click on the specs tab you'll see that XFX has a minimum 500 watt power supply specified and recommends a 650 watt model. If this system is only going to be used for light gaming, you could try one of the more inexpensive EVGA models like this one:
http://pcpartpicker.com/part/evga-power-supply-100b10500kr
I also suggest looking at the Tom's Hardware PSU Tiers here: http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html
The one I suggested is a Tier 3 model. If you're going to be overclocking or running stressful games like GTA 5 or the Witcher 3, you should probably consider a higher tier PSU.