Well, Dual 470 GTX cards are hard on PSU'S ! Just burned out a 1010 watt PSU !

[Markfw]

First let me say, this was a quality PSU >85% efficiency, and well ventilated in a house with AC, so it wasn't crap, untested, or hot.

So I had my dual 470 GTX cards in a Q6600 @ 3.3, and one HD, and one case fan and one DVD for a week with the 2 470's and the cpu@100% load, no problem.

So I decide to move them into my primary box, same cards, PSU, but with a 920@3.6 with HT, 2 HD's, 2 optical and 4 case fans. After 2 minutes under 100% load, I smell something electrical burning, whip around, and it seems like its the computer. well, 60 seconds later poof ! It shuts down, and man is the PSU HOT !!!!

So I take out one 470, put the original PSU back in (750 watt Corsair) and now I am up. I put the 1010 watt Fortron back in the Q6600, still dead.

Next time I try 2 470's it will be with a 1200 watt Sesonic or Corsair !

 

[zebrax2]

Lol. Another reason to buy new hardware i guess you can't seem to have enough of them based on your sig

 

[CitanUzuki]

Making me worried about two 480's on my corsair hx1000.

 

[borisvodofsky]

So I had my dual 470 GTX cards in a Q6600 @ 3.3, and one HD, and one case fan and one DVD for a week with the 2 470's and the cpu@100% load, no problem.

So I decide to move them into my primary box, same cards, PSU, but with a 920@3.6 with HT, 2 HD's, 2 optical and 4 case fans. After 2 minutes under 100% load, I smell something electrical burning, whip around, and it seems like its the computer. well, 60 seconds later poof ! It shuts down, and man is the PSU HOT !!!!

So I take out one 470, put the original PSU back in (750 watt Corsair) and now I am up. I put the 1010 watt Fortron back in the Q6600, still dead.

Next time I try 2 470's it will be with a 1200 watt Sesonic or Corsair !

Q8200@2.8
E7200@2.8
E8400@3.97 on P5Q
Q6600 G0 on DQ6 @3320
Q6600 G0 on DQ6 @3550
Q6600 G0 on DS3R @3510
Q6600 G0 on P35-DS4 @ 3420
X3350 (Q9450) on DQ6 @ 3576
2 x PHII 940 BE's both @ 3600
I7 920 @ 3.7
1090T @ 4127
An assortment of 19 8800 GT's, 9800 GT's, 9800 GTX+'s and 2 GTX260's on various boxes doing F@H


WTF is wrong with you... in a good way.

 

[TurtleCrusher]

Maybe just a bad PSU?

Either way its good to know for multiGPU users. How well do those fold compared to a 285?

If 470s burned out a 1KW PSU, just imagine dual 480s.

 

[tviceman]

I think it was more than likely just a bad PSU. I had a 700 watt go bad on me about a month ago - doing exactly what you described. My PSU was 6 months old and was driving a single gtx260.

 

[Wreckage]

How well do those fold compared to a 285?
.

I'm curious as well. Fermi has it's own folding client.
http://techreport.com/discussions.x/18978

 

[cusideabelincoln]

Well power supplies don't like heat. They usually operate better with lower temps (having better efficiency and voltage regulation). Putting a load and increasing the temp it burned out the PSU much easier.

 

[Annisman*]

Well, all our PSU's will go eventually... how old was it ?

 

[Wreckage]

Well, all our PSU's will go eventually... how old was it ?

I lost 3 because the electric company wasn't sending me enough juice.

 

[Markfw]

Well, all our PSU's will go eventually... how old was it ?

About 3 weeks in use, but I have had it for over 6 months. Since it was running the 2 470s for weeks, I don't think it was a bad PSU, and it had more airflow in that 900 case than it did before. I think it was just too much juice for it ! It was probably 150 watts more load than on the other system (I7 wakes more than Q6600 and 2 more drives and 3 more fans,)

 

[MagickMan]

Well damn, Mark. Time for a Corsair AX1200.

I wouldn't think that dual GTX470s would be that brutal, I've been cranking away with an OCed Q9550 (4.2GHz) and CF 5850s (1000/1300) on an HX650. You're making me nervous now!

 

[Hauk]

Well damn, Mark. Time for a Corsair AX1200.

I wouldn't think that dual GTX470s would be that brutal, I've been cranking away with an OCed Q9550 (4.2GHz) and CF 5850s (1000/1300) on an HX650. You're making me nervous now!

Loving my AX1200. 480 SLI loads it to it's efficiency sweet spot. I can't wait for winter though.. 600+ watts to keep my den nice and toasty..

 

[Meghan54]

If it was an FSP Everest 1010W, I'd not really be surprised it blew itself up when heavily loaded. Its output rating was for 25C, and derated quite a bit when exposed to temps above typical room temps....something like inside a hot case, esp. considering you've got a pair of 470's in there, which are not exactly the coolest running of video cards.

Add to that the mediocre at best build quality of that power supply (CapXon main cap, CapXon and Teapo secondary caps, group regulated design, and only 900W available on the +12V rail), and you've got a power supply that was being asked to do more than it could.

Lucky for you it didn't take out any parts inside your computer.

 

[Markfw]

If it was an FSP Everest 1010W, I'd not really be surprised it blew itself up when heavily loaded. Its output rating was for 25C, and derated quite a bit when exposed to temps above typical room temps....something like inside a hot case, esp. considering you've got a pair of 470's in there, which are not exactly the coolest running of video cards.

Add to that the mediocre at best build quality of that power supply (CapXon main cap, CapXon and Teapo secondary caps, group regulated design, and only 900W available on the +12V rail), and you've got a power supply that was being asked to do more than it could.

Lucky for you it didn't take out any parts inside your computer.

It was in an Antec 900, at the bottom of the case, with all the case fans on. The temps on the video cards were a good 10c below what they were in the other case due to the better airflow.

But if the PSU is crap, then....

But I thought Fortron were good ? Do you thing the 750 Corsair I have could handle them ? If not, what do you recommend ?

 

[Rifter]

If it was an FSP Everest 1010W, I'd not really be surprised it blew itself up when heavily loaded. Its output rating was for 25C, and derated quite a bit when exposed to temps above typical room temps....something like inside a hot case, esp. considering you've got a pair of 470's in there, which are not exactly the coolest running of video cards.

Add to that the mediocre at best build quality of that power supply (CapXon main cap, CapXon and Teapo secondary caps, group regulated design, and only 900W available on the +12V rail), and you've got a power supply that was being asked to do more than it could.

Lucky for you it didn't take out any parts inside your computer.

This x2, ill bet a 850w corsair/seasonic/Antec could put out more power than that FSP.

 

[Markfw]

Now I see a Corsair 950 for $140, and a 1000 Corsair for $230, WTF ? Why is it that much more ? is it better ? how is that 950 ?

http://www.newegg.com/Product/Produc...82E16817139013

That one

 

[Rifter]

Im sure the 950TX would be enough for that system, the 1000W is more because its the HX series is it not? its higher end than the TX series and is also modular.

 

[Campy]

Rifterut you are correct.

op: a 1000w PSU should have been able to run that without any problems was probably just a bad psu (faulty or just bad quality). get a corsair

 

[theAnimal]

But I thought Fortron were good ?

I think it was more a matter of most others not being good, but a lot of PSU makers have improved, while Fortron has not.

 

[theAnimal]

How well do those fold compared to a 285?

470 gets ~12k ppd with GPU3.

 

[jonnyGURU]

First let me say, this was a quality PSU >85% efficiency, and well ventilated in a house with AC, so it wasn't crap, untested, or hot.

No... It was an FSP 1010W.

Let's put it this way.... FSP stopped sending us samples after the Everest 900W got a 5 for performance. I'm sure the 1010W would do just as bad, if not worst (as FSP PSU's tend to be worse the higher the wattage).

For Paul, it was only his second FSP review, so I guess they felt comfortable sending him one.. and it failed: http://hardocp.com/article/2008/08/04/fsp_everest_1010w_power_supply/1

FSP bought 3Y a while back. They need to better utilize those engineers and stop making these group regulated units because it's just not working out.

 

[extra]

Ahhhh man. I'm considering adding a 2nd 470 for SLI at some point. I have a generic crappy 700-watt. It goes okay with the video card not overclocked too much. If I clock it too high and up the voltage too much, in demanding games it sometimes shuts down lol. Fortunately I have a cool coworker who is having a vendor send us a 1200 watt antec for $60 "as a sample for a project" lol. But yeah, Fermi--that TDP is B.S. even at stock imho, seriously....And if you overlock and overvolt them, dear god.

 

[tomoyo]

It was in an Antec 900, at the bottom of the case, with all the case fans on. The temps on the video cards were a good 10c below what they were in the other case due to the better airflow.

But if the PSU is crap, then....

But I thought Fortron were good ? Do you thing the 750 Corsair I have could handle them ? If not, what do you recommend ?

Erm Fortron has plenty of examples of not good. Mostly Fortron is mediocre, they won't let you down in low power situations, but their voltage regulation is generally cheap and their psus are not really high quality. Your 750 Corsair is probably MORE likely to work with your setup rather than the 1000 Forton. That's all there is to be said.

 

[dualsmp]

The PSU must of had something not quite up to spec. Even with the 470 in SLI it would draw approx 740 watts AC (~630 watts DC at 85% efficiency). 1000watt PSU should have been more than enough.