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Power requirement for amd r9 380.

S

sarangchafle

Junior Member
I have a amd fx 6300 non-Oc'ed
I have a 1 tb HDD . I also have a 500 watt PSU which has only 32A on 12v rail .
I know that I made a mistake buying this local psu. But can I run the amd r9 380 I am about to buy .
BTW the PSU is Circle 500watt raw power
Thank you for answers
 
Technically it might just be enough. I'd be less concerned if it were a high quality PSU. Personally I would upgrade the PSU.
 
sarangchafle said:
Yeah , are you saying so by seeing the watts or the output.
Sorry if I am a little misinformed.
Click to expand...

What do you mean by "output"? To me that sounds like "capacity" which is the same as "the watts", i.e. 500W.

He's saying your power supply is most likely not good quality. A good quality 500W unit would be easily enough for your setup, while a low quality unit (of any wattage) is somewhat risky when using a powerful graphics card. In a worst case scenario, the power supply can fail while the PC is running and cause a power surge that kills the motherboard or other components. Since I've never heard of this "Circle" brand, I would not be surprised if that happened.

I would also recommend upgrading your power supply before you do anything else. You don't need more capacity but you do need more quality. Where do you buy components from and how much do you have to spend? What games do you want the graphics card to handle smoothly, and at what monitor resolution?
 
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I plan on buying from Amazon.I own a 1080p display.
I can play on any settings. Believe me I currently own a nvidia geforce 210 ddr3. I played GTA 5 on it.
I plan on spending somewhere about 40-50$ range
 
lehtv said:
What do you mean by "output"? To me that sounds like "capacity" which is the same as "the watts", i.e. 500W.

He's saying your power supply is most likely not good quality. A good quality 500W unit would be easily enough for your setup, while a low quality unit (of any wattage) is somewhat risky when using a powerful graphics card. In a worst case scenario, the power supply can fail while the PC is running and cause a power surge that kills the motherboard or other components. Since I've never heard of this "Circle" brand, I would not be surprised if that happened.

I would also recommend upgrading your power supply before you do anything else. You don't need more capacity but you do need more quality. Where do you buy components from and how much do you have to spend? What games do you want the graphics card to handle smoothly, and at what monitor resolution?
Click to expand...

I was asking him if he was telling it by seeing the amp here or watts.
 
Is it the Circle APFC model? Looking at the distribution of power between the rails, the unit is certainly a group regulated design. You're going to have a couple really heavy 12V only loads (power hungry CPU and ~200W video card) while you'll probably have very little on the 5V rails, which can cause the rails to go out of spec on cheap group regulated designs.

Unfortunately there's not a lot in your price range that's a whole lot better. I assume you'd be shopping on Amazon.in, correct? The Corsair VS450 at INR2,599.00 would be better, but not a huge step up. There's just not a lot of information on the Circle 500W to give a really informed opinion.

Random youtube video so it's a single data point, but..
https://www.youtube.com/watch?v=QNGk2XycM_U
 
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MrTeal said:
Is it the Circle APFC model? Looking at the distribution of power between the rails, the unit is certainly a group regulated design. You're going to have a couple really heavy 12V only loads (power hungry CPU and ~200W video card) while you'll probably have very little on the 5V rails, which can cause the rails to go out of spec on cheap group regulated designs.

Unfortunately there's not a lot in your price range that's a whole lot better. I assume you'd be shopping on Amazon.in, correct? The Corsair VS450 at INR2,599.00 would be better, but not a huge step up. There's just not a lot of information on the Circle 500W to give a really informed opinion.

Random youtube video so it's a single data point, but..
https://www.youtube.com/watch?v=QNGk2XycM_U
Click to expand...

Yes it it ‘ Circle Raw power 500 watt APFC ' you can check it on Amazon.in
 
https://forum-en.msi.com/faq/article/printer/power-requirements-for-graphics-cards

I am feeling kind'a scared after seeing the video.

I found a page which tells me that r9 380 needs 28A and 500 watt. Would I be safe.
 
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FYI - you can calculate the output rating of your +12V rail in watts like so: 32A * 12V = 384W. This, according to the manufacturer, is the highest load you can safely draw from the +12V rail. In addition, if the power supply has Over Current Protection, it should safely shut down the system if the 384W +12V load is exceeded.

The issue with low quality units is that it's hard to trust their specifications. It's impossible to say whether a low quality unit actually puts out safe +12V power up to the rated 32A or whatever it is - it might be "out of spec" well below that, possibly at the load that your computer is drawing.

I can't say for a fact that there's anything wrong with your unit, and the specifications look fine, so I guess you'll be fine. As long as we assume the advertised overvolt, over power, overload etc. protections actually work and the +12V rating is as high as it says, it should work fine and no damage should come to your components.

Can you tell MD which components draw power from 12V.
Click to expand...

Most components use +12V these days. If I remember correctly, +5V is used mainly by hard disks, +3.3V by chipsets and some other motherboard components.

I saw a PSU from Evga of 450 watt and it had 36A on 12V. Why is it so ?
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Typically higher quality units have a +12V rail almost as powerful as the overall wattage of the unit, to indicate that the wattage means the maximum safe continuous load. Your unit's +12V rail is weak enough that if it was targeted to the enthusiast market, it would be rated 400W, not 500W.
 
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The PSU has many standard safety features written all over it.
BTW I saw a used corsair cx500 for 38$.
Is it worth it ? It is used for 6 months.
 
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In one of my home PCs I have an FX8320 overclocked to 4.2GHz with an R9 380 4GB. The system is powered by a Corsair CS450M and the power supply rarely spins the fans faster that lowest speed. Reading from the UPS where the PC is connected, the load the UPS delivers is 300W max during gaming, and that is AC power. What the PSU provides will be lower.

That circle PSU actually looks decent. I personally feel that the aPFC / 80+ certification is important not because of the efficiency, but rather because to make the claim, it required a redesign or new design, and usually the initial designs will be closer to nominal specs than older designs, meaning that a "500W" 80+ or even if not 80+ but with aPFC will be closer to be 500W than for example, a Kentek "960W" non PFC will be to 960W 😉

ps. Yes, that Kentek "960W" at some point was one of the best rated PSUs on amazon USA, hence why I got it as example. All those with builds that demanded 250w or less said it was great, those with builds that needed 400W or more complained that it blew up after a few days...
 
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