Power Supply Recommenation

[zambrose]

I'm adding a GIGABYTE Radeon R9 380 DirectX 12 GV-R938WF2OC-2GD 2GB 256-Bit GDDR5 PCI Express 3.0 HDCP Ready ATX Video Card to my desktop. It requires a 500W power supply and I've currently got an Antec VP-450 Power Supply and ASRock B75M-DGS LGA 1155 Intel B75 SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard. Any recommendations on an affordable new power supply? I'm on a budget.

Thanks!

 

[timeconsumer]

http://www.guru3d.com/articles-pages/asus-radeon-r9-380-strix-review,5.html

Here they tested the power consumption of a R9 380 with an overclocked i7 5960X and found the entire system pulled under 350w (from the wall, which means even less on the PSU output side). They also estimate the GPU itself to be puling around 190w, or around 11amps. The Antev VP450 has 18 amps available on the rail that powers the GPU, it also shares that rail with the HDD motor, (molex) fans, optical drive etc. But there's no way all those are going to pull the other 7 amps.

And according to tests by Hardwaresecrets they actually managed to pull 22amps per rail in the overload test before the protection circuits shut it down.
http://www.hardwaresecrets.com/antec-vp450-power-supply-review/

I think you can actually use your current PSU and be fine. But you will be cutting it a little close.