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Is 550w psu enough for a AMD 280x?

killercroc
By killercroc
in Graphics Cards
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Posted

The title says it all.

yup...bronze will do it..but i would suggest that u go for gold... :)

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Posted

450 would do it too

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yeah any gold 550 will do

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80+ certification just how efficient the PSU is. The rating is the output power. If it is less efficient, it will draw more power from the wall in order to deliver that power. 80+ has nothing to do with output power or quality.

And yes, 550W is enough.

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Posted

A single +12v rail rated above 40A is more than enough.

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450 would do it too

No, no it wouldn't, unless it's some dodge "PSU" calculator.  My 7970 non ghz doesn't run on one.

 

Actually depends what card. 500 is base, I think the Asus and Sapphire ones take more power.

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No, no it wouldn't, unless it's some dodge "PSU" calculator. My 7970 non ghz doesn't run on one.

Actually depends what card. 500 is base, I think the Asus and Sapphire ones take more power.

My setup uses only 410w from the wall at 100% load. Most things should be fine, but it can go over. Too close for me though.

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My setup uses only 410w from the wall at 100% load. Most things should be fine, but it can go over. Too close for me though.

I had a 450 PSU and my GPU just wouldn't work. Ordered a new 750 watt one and viola, it worked.  Maybe it depends on the GPU. Maybe 280x's are more efficient.

Beneath this mask there is more than flesh. Beneath this mask there is an idea, Mr. Creedy, and ideas are bulletproof.

As I get older I get angrier more cynical, meaner. I feel some warning posts coming. I feel a ban coming. I was warned.

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I had a 450 PSU and my GPU just wouldn't work. Ordered a new one and viola, it worked. Maybe it depends on the GPU. Maybe 280x's are more efficient.

Woah. Yeah, maybe something happens and the PSU shuts down from being potentially maxed out or something like that.

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No, no it wouldn't, unless it's some dodge "PSU" calculator.  My 7970 non ghz doesn't run on one.

 

Actually depends what card. 500 is base, I think the Asus and Sapphire ones take more power.

If he's running a highly overclocked FX-8350 among other things than a 550w PSU wouldn't be enough. Tho a R9 280x itself peaks at around 260w. That leaves more than enough power left to power the rest of the machine. With a stock FX-8350 a entire system (with a GTX 690 idling in it) consumes around 200w at full load (Prime95). A +12v rail at 40A alone provides 480w of power. So a 550w PSU with a strong +12v rail is plenty for a single R9 280x.

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If he's running a highly overclocked FX-8350 among other things than a 550w PSU wouldn't be enough. Tho a R9 280x itself peaks at around 260w. That leaves more than enough power left to power the rest of the machine. With a stock FX-8350 a entire system (with a GTX 690 idling in it) consumes around 200w at full load (Prime95). A +12v rail at 40A alone provides 480w of power. So a 550w PSU with a strong +12v rail is plenty for a single R9 280x.

I said over 500...so we agree.

A strong overclock would be pushing that though, and sapphire (and I think asus) have cards with stock overclocks.

Beneath this mask there is more than flesh. Beneath this mask there is an idea, Mr. Creedy, and ideas are bulletproof.

As I get older I get angrier more cynical, meaner. I feel some warning posts coming. I feel a ban coming. I was warned.

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I had a 450 PSU and my GPU just wouldn't work. Ordered a new 750 watt one and viola, it worked.  Maybe it depends on the GPU. Maybe 280x's are more efficient.

thats good...psu should be left with some room to reduce the load on the 12v rail...may be thats y u were having problem..too much load on the rail.. :)

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i run my GTX 780 heavy OC on 450w gold PSU so yea 550w for 280x should be ok

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I ran an OC'ed 770 on an SFX 450w PSU for a while, and it was rock solid.

 

You should be fine with any at least "80 PLUS" 450-550W PSU

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550W is going to be perfectly fine - EVEN if you overclock your CPU, RAM, GPU, swarm of LED case fans.

 

GQCC7oG.jpg?1

 

Considering my PSU is 80 PLUS Bronze, being ~85% efficient, that equates to about 460W through the PSU.

This is with a FX-8350 @ 4.8GHz (1.4V), and a Sapphire Dual-X HD 7970 @ 1150 / 1500 (1.3V) [rest of system specs in under my profile].

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