Do I really need a 1000W psu for my fx9370?

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skule

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My computer cuts the power when I "use" my cpu.

I can play World of Warships/ Tanks with no problems but when I launch Battlefield 1, the power just cuts without warning. According to others, AMD recommends a 1000W psu but it seems like overkill when I check power consumption calculators online.

(And yes, I know a lot can be said about my cpu but this is a build I took over from my brother-in-law who just wanted to be nice and boost my specs a bit as a christmas present- now I just have to get the parts to fit together :) )

My setup is
CPU- FX9370
GPU- Asus gtx 1050Ti 4gig
RAM- 16 gig 1600 mhz HyperX
PSU- CoolerMaster B.2 600W
MOBO- Asus Sabertooth 990fx R2
Two old SATA 7200 drives
 
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skule

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Temps seem fine, around 30 Celcius on idle.I don't know how high they go before shutdown as I never get any warning.

 
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skule

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Cooler Master MasterAir Pro 3 is in right now, although I'm considering buying a second- hand Corsair H50/55/60 or something like it.


 
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g-unit1111

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Actually I'd go with what the AMD recommendations are as opposed to what the PSU wattage calculators recommend. The 9XXX series are known to be power hogs since they are essentially already factory overclocked versions of the FX-8XXX series. But most of the time they take into account poorly made PSUs as the bare minimum power requirements which is why they are so high. But you want more wattage than less with your particular CPU.
 
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skule

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I was afraid so, it's just that a 1000w psu is seriously expensive..

 
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g-unit1111

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You could probably get away with a solid 750W like an EVGA G2 / G3 or a Seasonic Prime but I am kind of skeptical about that. I will have to check. I would also definitely recommend upgrading the cooler but with the 9XXX series, an 80mm loop is the minimum. A 240mm radiator or a dual tower air cooler is what I would go with.
 
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why_wolf

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Yeah every review comments on the need for a liquid cooler (or really a nice big air cooler). Really wouldn't be surprised if it is a heat issue. But the others are right that you are cutting it real close with that PSU. So the problem could be either one or both.
 
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turkey3_scratch

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You need to do more testing than just launching Battlefiled. Run Prime95 and stress test your CPU, because it might be a GPU problem. And your PSU is crappy to be honest.

With a 1050Ti I think you'd be good with a high quality 450W PSU (though some people may be more comfortable with a 550W). Upgrade the GPU and then that combined with the CPU might need a 550W PSU.

We don't need to listen to what AMD says, we have literal information on power consumption from reviews.
 
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Rogue Leader

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HIGHLY disagree. The FX-9370 and 9590 have been show to be able to draw over 300w. We have had a ton of users have major problems with PSUs (even good ones) under 750w with that CPU. He has 2 mechanical drives, yeah the GPU isn't a big draw, but everything about that CPU screams overkill when it comes to the PSU. We have seen it, 100 times here.
 
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Darkbreeze

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I'll just leave this here, with the admonishment that given the low power nature of the graphics card, you can likely get away with a VERY good 650w unit or a fairly good 750w unit, but in no way would I recommend the use of anything less than that ESPECIALLY if there's any chance you might upgrade to a graphics card later on with a higher power draw. That would likely push you up into the 850-1000w realm and believe me when I say it needs to be a very good units because these 9xxx series processors are known to demolish motherboards and power supplies.


AMD.COM

Warning: This power draw of this CPU is almost twice that of the average CPU. Due to this, AMD recommends using at minimum a 850W to 1000W power supply. For cooling, AMD recommends using either either closed loop liquid cooling , h100i minimum or full system liquid cooling.


SR71-Blackbird

No board supports it very well even my ASRock 990FX Extreme 9 couldn't handle one with a custom cooler.
Click to expand...

And a big concern, since I don't see any cooler listed above, is what you plan to cool it with. Cooling is a ginormous factor with these chips and this snip is only one of many that, believe me, are NOT overstating the matter.

The FX-9xxx series are hot running processors and we don’t mean hot in any conventional meaning of the word either. This thing is like having a miniature nuclear reactor strapped to your motherboard; it will thoroughly overwhelm mid-tier heatsinks and AIO water coolers alike. Since it doesn’t come with an included heatsink we’re told that retailers will endeavor to bundle them with high end Corsair, Cooler Master or NZXT water cooling units in an effort to ensure customers won’t damage their new processors with sub-par cooling solutions.

With the potential for astronomical heat output, one would hope for an adequate way to measure temperatures. That just didn’t happen. RealTemp and CoreTemp routinely showed overly low readings and even AMD’s vaunted Overdrive utility was completely out to lunch. It claimed the chip idled at 19°C (ambient temperature was 23°) while load temperatures supposedly hit 46.7°C under load even though our Noctua NH-U14S was hot to the touch.

Only ASUS’ AI Suite II (which takes its temperature readings directly from the BIOS) was somewhat accurate with its reading of 65°C under load but we had reasons to doubt this too since, as you see in the screenshot above, our FX-9590 began throttling some cores down to the 4.515GHz mark after 20 minutes or so of continual full-load testing. Another possibility is that AMD has set Turbo Core 3.0 to begin throttling downwards when core temperature hits that 65°C mark in an effort to cap thermals and power consumption.

The lack of accurate temperature logging software poses a large problem for anyone with one of these 220W TDP chips: they have no way of knowing how hot (or cool) their processor is running. Not only will this play havoc when trying to dial in overclocks but it makes trouble-shooting stock issues all that much harder.
Click to expand...

The 9370 isn't quite as bad as the 9590, but it's close.
 
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turkey3_scratch

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Quality over wattage, as I like to say. Kitguru review of the FX 9590 has it drawing 317W from the wall under torture, for the whole system. Throw in a 1050Ti, and power won't go past 450W with his system. I will like to specify minimum always, if people want to do overkill that is up to them, but I believe it's my duty rather to inform them of their actual power usage. They can choose the PSU but I'll tell then the wattage.

Again, the FX 9590 is nothing special. It's just a high power CPU, and that power can and has been measured. There is no sorcery that makes you NEED an overkill PSU with it no more than you don't need an overkill PSU with an R9 290.
 
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turkey3_scratch

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If in fact these problems are caused by the PSU, it has nothing to do with the wattage. It would be because the power supply is a cheap group regulated design with bad voltage regulation according to a review I found. It's also got Jun Fu capacitors, but if the PSU is fairly new then those should be fine still.

So IF the issue can be narrowed down the power supply, what then is the solution? The solution is to get high quality power supply with DC-DC, because group regulated power supplies have problems with modern hardware.

Based on the behavior of the shutdown, it is not a shutdown from a PSU protection because that would require the PC to be unplugged and plugged back in. So this indicates that the motherboard is probably triggering the PS_ON signal. So something fishy is up, and it may be because the motherboard is getting "dirty power" from the PSU.

I would honestly recommend a new PSU nonetheless. Your power consumption under load should stay below 400W based on reviews of the FX 9379 and FX 9590 I have found online that measure whole system power from the wall in cinebench.

Am I recommending a 450W PSU? No. I don't recommend wattages, you can choose wattage yourself. I recommend quality. You want a DC-DC unit with good vreg, a 1000W group regulated unit will probably be a horrible choice compared to a 650W DC-DC unit (if you are indeed so inclined to get a 650W unit. Up to you, not me. Not my PSU. You may be inclined to get a 1000W DC-DC unit. Don't care, not my PSU. Get a 350W unit and I'd advise against that because power will exceed 350W. Get 450W and that's my minimum. But I don't care what you get. It's not my PSU, it's not my machine. I just care that you are informed.)
 
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DSzymborski

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As others have said, the issue is more quality than quantity here. AMD says 1000W mainly because if they say 600W, then people will try putting cheap, junky 600W PSUs into their rigs, which, to be perfectly frank, is pretty much your situation here. At 1000W, the pure junk is less common and some of those terrible 1000W PSUs are likely decent-performing 600W PSUs that the company lied about.

What it comes down to is that if you use a 9370/9590 for whatever reason, you need to maximize the quality of the supporting components (power, motherboard, cooler) in order to give it the best chance of working. Two of these three components are not present here, it's a low-end PSU and a budget air cooler. I wouldn't bother with this CPU unless I was using something like an EVGA G2/G3 of sufficient wattage and an H110 cooler. An H50/H60 cooler isn't really any better than what you currently have.

If you don't wish to provide the infrastructure the CPU needs, then your best option is to underclock it to 8350 or 8320 levels. These are just binned, heavily overclocked 8350s, after all. I still wouldn't be excited about the low quality of the PSU and the cooler isn't that robust, but you have an excellent chance of being able to at least run the CPU effectively as an 8350.
 
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g-unit1111

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Really? So the hundreds of threads I've seen on here about 9590s causing all kinds of problems are just a moot point? I wouldn't touch a 9XXX series with a 10 foot pole but if anyone has them now fixing the problems is always better than not.
 
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turkey3_scratch

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"Causing problems" is very broad, context is super important. A lot of problems persist because the motherboards can't handle them, sometimes even though they're supposed to. Case airflow is important for the VRMs to stay cool on the motherboard.

Other problems may be caused by the processor itself getting too hot.

Other problems may be from the PSU.

Some just straight-up need downclocked.

I don't think we are disagreeing here at all, in fact I think we are in agreement.
 
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Zerk2012

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Fix your cooling problem nothing listed above will cool that processor.
240/280mm liquid cooler.
Then replace the power supply.
A high quality 750 watt PSU will do if your not going to upgrade the video card in the future. Make sure you have air also blowing on the CPU area of the board.
 
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Darkbreeze

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That's the other issue I meant to broach. If you have or use one of these processors, much as it makes most of us shudder, you really better plan to provide the absolute maximum best case fan solution you can provide, utilizing every possible case fan location. And if there are not at least two 140mm intakes, a 120mm or larger rear exhaust and at least one 140mm top exhaust, I'd highly recommend finding a case that does, and utilizing all of them and probably at max speeds anytime you're gaming or doing anything demanding.

This is probably the only thing short of installing some kind of DIY VRM cooler that might help keep the motherboard stable.
That is in addition to the use of an excellent, high end cpu cooler of course.
 
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S

skule

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Thanks for a lot of good answers, people! :)
To answer a few questions- I'm stuck with this cpu because it was given to me as a gift and is the most valuable part of my setup atm. The cpu itself is completely stock and I have no plans to start oc'ing.
As for future upgrades, my screen has a max resolution of 1920x1600 so I'll be sticking to the current setup for as long as it'll pull games decently. I'm also on a limited budget so getting the high- end parts some mention is unfortunately not an option. Whatever makes it work will have to do for me, hence the second- hand parts and air cooling. :)

My current psu is brand new and bought because I thought it would be good enough, btw. :p
 
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DSzymborski

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Here's the problem, you're not running a CPU at stock, you're running a heavily overclocked CPU. Just because you didn't overclock it yourself doesn't mean it's not an overclock.

Again, underclock it to the level of an 8350. Without a proper PSU and cooling solution, you're going to be hard-pressed to run it as a 9370. Throwing inadequate second-hand parts at it is just going to waste your money, not fix the problem.
 
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