550 W PSU enough for R9 290 PCS +

Ticonderoga · 3 Feb 2015 at 11:32

Hi

I got a great deal on a B grade Powercolor R9 290 pcs +, so
my systemsetup will look like this :

I7 970 @ 4 Ghz
Powercolor R9 290 Pcs +
Antec truepower Classic 550 W
Corsair H80i
2 x SSD + 1 x HDD
6 fans

The problem is I bought my PSU when I thought I would be getting a GTX 970, but Nvidia changed my plans

Will 550 W be enough for the R9 290 instead? I know it is more powerhungry than the GTX 970

Cheers from Denmark

pastymuncher · 3 Feb 2015 at 13:22

Your psu is a quality Seasonic built unit with a single 12v rail of 540w so more than enough. I would reckon total system power draw to max out around 400-450w.

modd1uk · 4 Feb 2015 at 04:37

On paper it should be fine power wise, however if you sold it on and picked up a 650w for instance it shouldn't cost you too much more and will give you headroom should you wish to overclock it.

I would rather have the little extra head room tbh.

Ticonderoga · 4 Feb 2015 at 14:52

So I reset my cpu to stock speed and plugged in the R9 290 pcs+.
I have tried a run of unigene valley without any problems. i didn't notice
my psu fan ramming up but it is hard to tell apart from the case fans.
I am going to borrow a kill a watt and take some readings, if everything is ok I will OC my cpu again.
I really dont want to switch PSUs unless i have to.

sastusbulbas · 6 Feb 2015 at 21:49

Looking forward to your readings, my future spec when calculated with two 290X is showing as over 850w.

Custom PC did a 4k gaming article where a system with two 290's drew 720w. Which has put me off buying the EVGA 750w PSU I was recommended.

Ticonderoga · 7 Feb 2015 at 16:31

So I ran a new valleybenchmark with the kill a watt plugged in and my system
topped out around 425 watt. But bear in mind that this is with both gpu and cpu at stockspeed. How much more power will I draw if I oc my cpu to 4 Ghz?

MrMD · 7 Feb 2015 at 19:46

Ticonderoga said:
So I ran a new valleybenchmark with the kill a watt plugged in and my system
topped out around 425 watt. But bear in mind that this is with both gpu and cpu at stockspeed. How much more power will I draw if I oc my cpu to 4 Ghz?

Not a lot more,still would be within your PSU's spec.Its a quality PSU so you can have faith it can safely put out wattage that it says

jimhaumman · 10 Feb 2015 at 12:35

Ticonderoga said:
So I ran a new valleybenchmark with the kill a watt plugged in and my system
topped out around 425 watt. But bear in mind that this is with both gpu and cpu at stockspeed. How much more power will I draw if I oc my cpu to 4 Ghz?

Try Sleeping Dogs benchmark on extreme setting.
Depends how high you need to rise your voltage.
My i3570k do 3.9 Ghz without change in voltage.

Ticonderoga · 12 Feb 2015 at 00:11

jimhaumman said:
Try Sleeping Dogs benchmark on extreme setting.
Depends how high you need to rise your voltage.
My i3570k do 3.9 Ghz without change in voltage.

I will give that a try.

is there any Antec rep on the forum?
I would like to know what the antec truepower Classic 550 w is rated at
in terms of peak value?

it seems my 550 W is acting like the 650 W model

I can make it exceed the 550 W and draw around 600-620 W

lee32uk · 12 Feb 2015 at 02:55

Ticonderoga said:
I will give that a try.

is there any Antec rep on the forum?
I would like to know what the antec truepower Classic 550 w is rated at
in terms of peak value?

it seems my 550 W is acting like the 650 W model
I can make it exceed the 550 W and draw around 600-620 W

The Antec rep on here is Ace Modder.

http://forums.overclockers.co.uk/member.php?u=14757

pastymuncher · 12 Feb 2015 at 09:32

Ticonderoga said:
I will give that a try.

is there any Antec rep on the forum?
I would like to know what the antec truepower Classic 550 w is rated at
in terms of peak value?

it seems my 550 W is acting like the 650 W model
I can make it exceed the 550 W and draw around 600-620 W

The 550w is what it can deliver to the pc components. It will always draw more power at the wall than it's delivering to the pc.

Ticonderoga · 12 Feb 2015 at 12:32

pastymuncher said:
The 550w is what it can deliver to the pc components. It will always draw more power at the wall than it's delivering to the pc.

I am award of this. But is seems that even when I take the PSUs efficiency into consideration it can output more than 550 w to the PC.

How come I am not allowed to send Acemodder a private message ?

lee32uk · 13 Feb 2015 at 22:10

Ticonderoga said:
I am award of this. But is seems that even when I take the PSUs efficiency into consideration it can output more than 550 w to the PC.

How come I am not allowed to send Acemodder a private message ?

If you go on his profile and click on 'send message' His email address is there.

RJC · 13 Feb 2015 at 22:20

Ticonderoga said:
I am award of this. But is seems that even when I take the PSUs efficiency into consideration it can output more than 550 w to the PC.

How come I am not allowed to send Acemodder a private message ?

PM's are disabled, if you click on the trust button on one of his posts you can send a message direct to his email, the one on his profile is a Overclockers email which I suspect may not work.

Surfer · 13 Feb 2015 at 22:33

mine is a superflower 550w golden green and it seems to be doing ok with the PCS+ 290. What would be the telltale signs that it wasnt? Random shutdowns?

Ticonderoga · 14 Feb 2015 at 23:08

RJC said:
PM's are disabled, if you click on the trust button on one of his posts you can send a message direct to his email, the one on his profile is a Overclockers email which I suspect may not work.

Thanks. I just sent him a message

Doogles · 15 Feb 2015 at 00:18

I had an XFX 550w Core Edition on this rig when I had crossfire HD 7850's, it failed...