R9 390 Power Supply?

[Coconutshell]

Hi all,

I'm currently running an R9 390 on a 1000W PSU, and obviously that's fine.

My brother has a gtx 760 and wants to get a 390, but he only has a 600W PSU, the EVGA 600B. It has 49 amps on the 12V, and I've heard the 390 uses 50 amps, but I'm not sure.

Will it run on that PSU? Does it matter if the amps are 1 off what it says it needs? I don't know a whole lot about power supplies.

Thanks!

 

[lyricyst2000]

I think you may be over-estimating how much VRAM is actually needed during a game at max settings. If you game at 1080p, you'll never use even 4GB... from my experience, anyway. I have been monitoring VRAM usage on the rig in my sig with several of my games recently. I have yet to break the 2GB barrier. But maybe I just don't play the right games.

GTA V can push to near 4gb. Rainbow six siege easily pushes beyond 4 gb with the HD texture pack. Havent checked fallout but Ive heard the same about it.

 

[lyricyst2000]

hi. i am getting the gpu sapphire r9 390 and i cant decide which psu i need.. you say minimum 550-600.. a psu of 750 80+ bronze is good enough? my system is i5 4460, msi z97s sli krait edition 1 ssd samsung 850 evo and 2 hdd.i was looking for 850 or 1000 watt gpu but i think it is too much... thanks for your response

I would aim for a 650 gold or 750 bronze at the least. I have mine on a 650 gold and theres not a ton of overhead left over.

 

[turkey3_scratch]

Gold and bronze doesn't matter. They are no indications of quality, and if you don't pay your electricity bill, they basically mean nothing. Even if you do, savings are minimal. Look at the tier list: http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

 

[Maheidem]

Well, just to let my 2 cents here, I´ve been using my R9 390 overclocked with my 4670k Also overcloked with a 600W OCZ PSU (also a Corsair Hydro H80i) with no problems at all.

I´ve ran torture tests like Prime95 at the same time as Furmark and the system never gave out.

Also never had a problem with games or rendering softwares.

But, that´s just me.

 

[masterhashi]

You guys need to tell me what you are monitoring your VRAM usage with. I use HWinfo64 and it never showed my VRAM usage go beyond 2GB. Maybe I just don't play the right games.

@ battlefield161
No need to start name calling. We are all friends here (at least try to be) and have varying opinions and disagreements.

Try Playing the "middle earth shadow of mordor" with the 4K texture pack in a 4K monitor. when it's maxed settings my r9 390 was using 6GB of VRAM and my brother's GTX970 couldn't maxed it without SLI. ps. the texture pack does nothing if you don't have a 4K monitor. and if you're a 1080p gamer both VGAs will have their ups and downs in games with only a max 10 fps difference.

 

[Starsunder]

Im looking into getting one of these and Im running this one. it's rated at 54a on the 12V rail, Im running an older Intel I5 not over clocked or anything. Think that will run it fine or should I step down to a 290. Im currently using a 6970 so either would be a pretty big upgrade at this point.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139035

hi. i am getting the gpu sapphire r9 390 and i cant decide which psu i need.. you say minimum 550-600.. a psu of 750 80+ bronze is good enough? my system is i5 4460, msi z97s sli krait edition 1 ssd samsung 850 evo and 2 hdd.i was looking for 850 or 1000 watt gpu but i think it is too much... thanks for your response

I would aim for a 650 gold or 750 bronze at the least. I have mine on a 650 gold and theres not a ton of overhead left over.

 

[Gorrak]

I would highly recommend a 290 Vapor-X instead (if you don't need 8 GB of VRAM).

http://www.amazon.com/Sapphire-VAPOR-X-PCI-Express-Graphics-11227-04-40G/dp/B00JJJW4Z2

It can easily be overclocked and is, in my opinion, the best aftermarket cooler around.

Did you miss the fact that this thread is about the superior 390 or did you do that intentionally?

 

[ErikVinoya]

I think everyone missed the fact that this question has been answered almost a year ago

 

[thor220]

I would highly recommend a 290 Vapor-X instead (if you don't need 8 GB of VRAM).

http://www.amazon.com/Sapphire-VAPOR-X-PCI-Express-Graphics-11227-04-40G/dp/B00JJJW4Z2

It can easily be overclocked and is, in my opinion, the best aftermarket cooler around.

Did you miss the fact that this thread is about the superior 390 or did you do that intentionally?

LOL, a guy comes and comments on a thread saying "did you miss something" when in fact that post was made over a year ago. No Sir but you DEFINITELY missed something.

FYI the 390 isn't superior. It has more RAM but a slower memory bus. In the end it only winds up trading blows with the R9 290x. Let's not forget, this post is over a year old. At the time of posting the 290x was cheaper.

 

[praxis22]

I think you may be over-estimating how much VRAM is actually needed during a game at max settings. If you game at 1080p, you'll never use even 4GB... from my experience, anyway. I have been monitoring VRAM usage on the rig in my sig with several of my games recently. I have yet to break the 2GB barrier. But maybe I just don't play the right games.

Depends on the game. Skyrim will use everything you throw at it, at least if you run it on Windows 7 Though to answer OP, I have an overclocked 390 and an 850W PSU, works fine.

 

[Mathias_8]

Hi Everyone,

Just figured id put in my two cents as i have a corsair GS600 (600W) PSU and have recently purchased a Sapphire Nitro R9 390 and have updated all the drivers and i have no problems... until i am about to enter a game world. I tried with GTA 5, The Crew, and Dark Souls 2: Scholar. the games launch fine but as soon as im about to load into the world my entire pc shuts down. after 3 fails i checked the cards box to see what it recommended and right there in bold letters is "750W PSU(or greater)". so its back to the store to upgrade to a 1000W just to be safe.

To anyone saying you can run a R9 390 on a 600W PSU can you please stop getting peoples hopes up

750W is for headroom in case people decide to use a bad psu... While I wouldn't say a GS600 is bad, I've seen builds run an R9-390 rig using Seasonic's 620W S12/M12 series and Corsair's CX600. Point being, you must be drawing a lot more power in other parts of your rig (lights, pcie cards, OC'ed AMD cpu), besides the GPU.

Which is still more speculative than his first-hand account.

I think everyone missed the fact that this question has been answered almost a year ago

Not really, there are different answers across the board - all boards - and it is still uncertain. So you can play it with a 650W PSU but you have to get a "good" one. What does that mean? People think BeQuiet are "good", and yet their affordable series are breaking down everywhere (in Amazon reviews). So there is very little specific information to rely on - all that is clear is that one would be taking chances going below 750W and even there.

 

[ErikVinoya]

Not really, there are different answers across the board - all boards - and it is still uncertain. So you can play it with a 650W PSU but you have to get a "good" one. What does that mean? People think BeQuiet are "good", and yet their affordable series are breaking down everywhere (in Amazon reviews). So there is very little specific information to rely on - all that is clear is that one would be taking chances going below 750W and even there.

This question has been answered, what is uncertain to you?
1. If you are that guy who looks at brand names, instead of models for judging the reliability/performance of parts (not just PSU), you're in for a lot of headaches. You can't just say "Hey, this brand's $200 PSU is good, so their $20 budget model should be good as well".

2. I base my answers and recommendations according to completed builds, reviews, and even tier lists. You can't get any more objective than that; how is that speculative? how is that information "little"?

3. Even if you get a 750W PSU, if its a cheap Chinese knockoff bought for $10, you'd likely still kill your PC. That meaning, you'd be taking chances every time you don't make an informed decision.

 

[Captainawzome]

Not really, there are different answers across the board - all boards - and it is still uncertain. So you can play it with a 650W PSU but you have to get a "good" one. What does that mean? People think BeQuiet are "good", and yet their affordable series are breaking down everywhere (in Amazon reviews). So there is very little specific information to rely on - all that is clear is that one would be taking chances going below 750W and even there.

This question has been answered, what is uncertain to you?
1. If you are that guy who looks at brand names, instead of models for judging the reliability/performance of parts (not just PSU), you're in for a lot of headaches. You can't just say "Hey, this brand's $200 PSU is good, so their $20 budget model should be good as well".
2. I base my answers and recommendations according to completed builds, reviews, and even tier lists. You can't get any more objective than that; how is that speculative? how is that information "little"?
3. Even if you get a 750W PSU, if its a cheap Chinese knockoff bought for $10, you'd likely still kill your PC. That meaning, you'd be taking chances every time you don't make an informed decision.

Really dude? This was almost a year ago lol

 

[ErikVinoya]

Well, he called my answer out... lol

 

[010TheMaster010]

/thread somebody please lol

 

[TA Tim Biddy]

So originally I had an 850 psu with this and it was fine until it died and I replaced it with 650 one. Now as soon as I play a game that really loads the gpu instant crash. I thought my card was knackered but I think that it's the psu not having the required wattage bear in
Mind I have a dreaded 8350 and the lights dim when the PC comes on ;-)

 

[lunyone]

Well a crappy or weak 650w PSU could give you issues. If it a quality PSU or close to one, 650w should be fine for any single GPU based computer these days. Hell even a 450-500w quality PSU could handle a decent system.

What are all of your parts in the system?
Are you OC'ing anything? if so, try putting the settings back to stock and see if you can game without the OC.
What PSU do you have now (make and model)?