R9 390 PSU compatibility

mrkudin · Feb 28, 2016

Hi, I need a confirmation from the pros here. I'm currently using Cooler Master GXII 550W 80+ Bronze PSU and I'm planning to upgrade my current GPU to a R9 390. So can someone confirm if my PSU compatible with R9 390 or not? I'm not good at these PSU spec data honestly, sorry. Also I've read some articles and forum/reddit discussions and some said it need a minimum 650W PSU while some other said a good quality 550W PSU would do just fine, so it leads me to confusion.

Currently my PC specs are: i5-4670, 8GB RAM, ASRock H87M and GTX 760 GPU.

Thanks in advance.

maxalge · Feb 28, 2016

mrkudin :

not good enough, your current psu is low quality

you need a GOOD 650w tier 1 or 2 model from this list:

http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

N3rdR4ge · Feb 28, 2016

Your PSU would not be considered a good quality one. Definitely needs to be replaced.

Best budget one with a rebate:
http://pcpartpicker.com/part/evga-power-supply-110b20750vr

650w is a minimum recommendation. A 750w would be better pick.

maxalge · Feb 28, 2016

N3rdR4ge :

nice deal on that b2

burgessanthony · Feb 28, 2016

^thats good deal. A strong 600 is fine too. Even overclocked the 390 pulls no more than 275 under load. Your cpu, mobo etc is about 100 under load. But id agree with the above post and linked psu.

N3rdR4ge · Feb 28, 2016

ya the 750 is more for efficiency sake and extra overclocking room.

mrkudin · Feb 28, 2016

Alright thanks everyone for the feedback. Guess I'll be changing my PSU too (which I'd actually trying to avoid due to limited budget but it's okay to raise a bit more I guess).

So thanks again people.

N3rdR4ge · Feb 28, 2016

np, itll be worth it.

maxalge · Feb 28, 2016

burgessanthony :

390 can easily pull over 300w under high gaming loads, some factory OC'ed versions can spike close to 400w

N3rdR4ge · Feb 28, 2016

maxalge :

burgessanthony :

390 can easily pull over 300w under high gaming loads, some factory OC'ed versions can spike close to 400w

agree

burgessanthony · Feb 28, 2016

Rubbish. Completely wrong in real world. I have an accurate wall power meter and my 390 is at +19mV, 1100 core and 1700 memory. The MOST I have seen the entire system hit is 430w from the psu assuming 86% efficiency. Thats with an overclocked cpu and overvolted ram. That was during just cause 3 at 1440p. Running prime and Valley at the same time gives a reading of 425 from the psu.

N3rdR4ge · Feb 28, 2016

burgessanthony :

http://www.tomshardware.com/reviews/amd-radeon-r9-390x-r9-380-r7-370,4178-10.html

MSI R9 390X Gaming 8G torture testing
VGA Card Total = Min 93.76 W / Max 468.04 W / Avg 368.32 W

not rubbish

burgessanthony · Feb 28, 2016

Thats the 390x. We are talking about the 390. The ONLY benches showing 300w is from furmark which does something odd to amd gpus. BOTTOM LINE. I'm heavy real world gaming the 390 pulls no more than 275w. Measured and tested by me in the real world.

N3rdR4ge · Feb 28, 2016

burgessanthony :

load testing with unigen valley benchmark at 4k

http://www.bit-tech.net/hardware/graphics/2015/09/04/asus-radeon-r9-390-strix-oc-review/10

427w load asus strix 390.

also, the 390x has almost identical power consumption.

too tired to provide more of a plethora of proof to you. its all over reputable testing sites.

burgessanthony · Feb 28, 2016

All I am saying is for real world usage (1080p as thats all the card can manage) heavy gaming a 600w psu for that card even on a heavily overclocked system is fine. Ive never seen more than 430w system draw on even heavy 1440p. Not disputing the bench marks, just saying that valley at 4k is irrelevant to actual use.

Results:
Firestrike 1440p 432w system peak
Valley 1440p 421w system peak
Furmark 1080 480w system peak

Not disputing the online benches you posted, but think its fair to give some useful results to the OP.

maxalge · Feb 28, 2016

burgessanthony :

a 390 can be used for 1440p in the real world, in fact that is the sweet spot for it

"Ive never seen more than 430w system draw on even heavy 1440p"

and so you prove your own not more than 275w incorrect

388 - 95 = 290w stock

431 - 95 = 336w overclocked

there are many more examples, tom's did a piece not so long ago that shows this

this is the reason many people with bad, or underpowered psu's suffer issues with these cards

burgessanthony · Feb 28, 2016

Not at high settings 60fps in AAA games. But yes, it'll handle 1440p in some things at reduced settings, and still manage reasonable power draw. It's a beast at 1080p ultra though.

burgessanthony · Feb 28, 2016

430-275 is 165w. Without gpu ive seen 140w with cpu under load. So ok, 290w. Still, its so so much below what a 620w psu can deliver which is really the point I was making from the start when all I said was that a 600w good psu was enough. Actually even on my OCd system the power draw is right in the 60-70 spot.

I'm just trying to help people out based on user findings. Not here to argue.

I once got slated on here for quoting a 970 can see 200+ power draw. Turns out in reality its 160 tops in games. Id gone off reputable benchmarks online. I accepted uses actually using the stuff and measuring draw was more accurate and relevant.

maxalge · Feb 28, 2016

burgessanthony :

the point is it can spike MUCH higher, touching ~400w

also not all "600w" power supplies are actually in fact 600w

OP's cooler master is not good enough to handle it

burgessanthony · Feb 28, 2016

Ok I'll accept it can momentarily spike. But when I got mine I spent a while measuring power draw as I was concerned. So what i am providing here comes off the back of a lot of testing and assuring myself!

R9 390 PSU compatibility

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