PSU requirements for r9 380

[Blackhand]

Hey guys, so I just bought an Asus sphinx r9 380 4gb, my pc is about mid grade.

Amd fx 8120
Gigabyte ga-78lmt USB3 motherboard
8gb Kingston ram 1333mhz
Radeon hd 6670
500w PSU
Also 3 box fans if that makes any difference


Could anyone tell me if my PSU is good enough to run all that with the new r9? I can't find a straight answer. Some people on other forums I've read only say it will be close but fine, others say it needs an upgrade. I plan on upgrading CPUs in a few months. But need to know if a PSU upgrade is needed now. Thanks everyone!

[Omega]

the r9 380 is not new it is almost a few years old and a 500w psu should be more than enough

[just.kamk /idle]

Depends on PSU brand & model.
Quality is key here, not just "hurr durr 9000w".

[Omega]

Power consumption Radeon R9 380

System in IDLE = 92W
System Wattage with GPU in FULL Stress = 332 Watts
Difference (GPU load) = 240W
Add average IDLE wattage ~10W
Subjective obtained GPU power consumption = ~ 196 Watts

and your cpu uses 242 Watts on maximum load you should be fine but you could upgrade to a 600 or 700 Watts but its not necessary

[Blackhand]

Thanks omega! Brand of my PSU I'm not even sure atm, but I remember paying a good amount for it so I'm not worried about that. I plan on upgrading the PSU in a month or so, just needed to know if I can get by for the time being.

[just.kamk /idle]

Open your chassis, read the label.
If it's a quality one, you'll be fine, otherwise not so much.

[Dr.Shadowds 🐉]

If you replace the 6670 with the 380, you should be estimated about 430~460 watts overall.

6670 TDP is 66w vs 380 TDP 190, that a 124watts gap. Also what model is your PSU? If it isn't very good, you might want to look into getting better PSU.

[upcoast]

With an amd FX8120 125w cpu if it runs that's fine but it should've been thought out better before buying an r9 380.

I've been down this road before running x4 940BE and GTX280 I had a good quality 500w Fortron however it would not run when it technically should've and I had to add another 350w scrap psu to the mix, yes you can run 2 psus.

If it runs bonus for you.

[Blackhand]

Solid replys, thanks guys. Didn't know it was possible to run 2 PSU's, might give it a try since I have another with the two pcie ports the card needs, if it doesn't work. I'm planning on upgrading anyways so even if it doesn't run for a week it's all good..