Need help with my PSU urgent!

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Enki12

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Jan 22, 2014
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Hi troops i ordered a MSI R9 280 GAMING 3G yesterday and it will arrive today.I thought i had a 550 watt PSU in my case but it is a 500 watt corsair one and i am not sure if it is sufficient enough the cooler master says my required wattage was 445 watts so i dunno can i have some input before i install the new GPU?Here are my specs

AMD APU A10-6800K (I KNOW IT IS WHACK I WILL UPGRADE SOON)

MSI R9 280 GAMING 3G AS MENTIONED

1 DISC DRIVE 1 HDD

Also i was running 7790 fine if that helps.
 
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BrandonYoung

BrandonYoung

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Oct 13, 2014
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I bet 500 watts will be sufficient. The "minimum wattage" listed for GPU's is a weird number, typically a over estimate to compensate for poor quality (lower than spec) PSUs, and an excessive amount of wattage spent on other components (your 37 case fans, 9 HDDs, and 6 optical drives).
 
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BrandonYoung

BrandonYoung

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"Tier Three - Meets standard ATX specifications, though closer to the edges than Tier two units. These are still solid units, which still supply stable power to your system, though not ideal for serious overclocking "

I bet you would be fine. Then again, its not my money I guess...
 
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Enki12

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Jan 22, 2014
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What is the worst that could happen? (Legit question not a figure of speech lol)
 
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BrandonYoung

BrandonYoung

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According to the site you posted, it is infact safe being a tier 3.

For reference, tier 4 is stated as: Tier Four - Not for overclocking systems or high end gaming rigs. May not even output labeled power and fail standard ATX specifications slightly. May even use cheap components to meet a price.

And Tier 5:
Tier Five - Replace immediately. These units are NOT recommended for any system, no matter the purpose. Reference to higher tiered models for a better and potentially money-saving unit

Tier 5 is not safe. period. Tier 3 is fine. Just don't go nuts and try to maintain the max output of your PSU and you should be just dandy.
 
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Enki12

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Jan 22, 2014
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http://www.realhardtechx.com/index_archivos/Page362.htm

This website says i need a 550 watt so idk now
 
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Enki12

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Jan 22, 2014
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OK last thing here is all my parts on part picker and it gives an estimated wattage
http://uk.pcpartpicker.com/parts/partlist/

Thats everything i have in this system except the case is different mine isn't on the site.Do you think it will be ok?
 
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BrandonYoung

BrandonYoung

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I'm not seeing anything in the parts list on that link.
 
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Enki12

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Jan 22, 2014
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Sorry my bd here is link http://pcpartpicker.com/user/caygo/saved/BMyQzy
 
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Enki12

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Jan 22, 2014
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So.. got the r9 280 delivered just there and on box it says minimum requirements 500 watt my other card that is in the pc just now also says that on the box so does that mean its all good?
 
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BrandonYoung

BrandonYoung

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A word about "minimum requirements":
These "requirements" also have to account for whatever else you are powering inside your computer, and are here to provide a "safety net".
If your PC is minimalist on power, the real world value should be well below this "minimum".
If your computer is overvolted/highly overclocked, saturated with fans, drives, optical drives, LEDs, etc etc, this number could be lower than the "true minimum".

Really, you need to know the true power draw of the 280 on full load (stock speed ideally). And the current full load draw of your computer. If when these numbers are added together you exceed your PSU's capabilities, you will suffer from instability, or the inability to boot or perform any calculation without the PC resetting when the power goes brown.

If I were you, I would stick that card in, and try it. But I'm not, and its not my investment.
I would like to say you will be just fine, but I cant know this for sure without knowing what the maximum exact wattage provided by your PSU, the maximum draw from your computer (without video) at full load, and the maximum draw of the video card at full load.

That aside, Corsair has built in "safety features" that (should) prevent the PSU from attempting to deliver more power than it is capable of (similar to how a circuit breaker functions). If it goes over this safety margin, it -should- switch off and not start a fire (worse case scenario).
I wouldn't think this could damage your hardware if Corsairs safety mechanics are functional.
 
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BrandonYoung

BrandonYoung

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Guru3D performed a review of the 7790, it was found, when paired with a i5 3570k (overclocked to 4.2Ghz) that the total system draw during load was "only" 172 watts. Your cpu is not as efficient as the 3570k and will require more wattage to power (not a huge amount).

A similar test was performed on the r9 280 (also paired with 3570k).
This system drew 305 watts at full load.

Assuming your CPU does not draw 200 more watts than the 3570k, I would bet you will be just fine.
(again, not my money/investment).
 
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