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What happened to my power supply?

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I have a question I hope someone can answer.. How in the hell did my power supply just blow up.. I mean it literally blew up. Okay well i might be exaggerating a little, but the power cord for the supply was literally blown out of the supply followed by a little smoke.

I just recently started running CROSSFIRE with two hd6870's. Both from XFX.
One is a 1GBDDR5 and the other is a 2GBDDR5. Here is my system

ASUS P8P67LE motherboard
850 watt Ultra X4 POWER SUPPLY
A 1GB and a 2GB XFX 6870 in CROSSFIRE ( ONE IS A BLACK EDITION 940MHZ/1150 MHZ... SECOND IS 900MHZ/1100 MHZ
3 120mm case fans and one 200mm fan on top
8GB DDR3 RAM
ASUS DVD ROM

I thought and was told that 850 watts would be more than enough to support my system.. Was i wrong? Do I need to
get a 1000 watt supply or did it just take a *** for no reason?

Someone please help me with this before I go out and buy another POWER SUPPLY...

All responses are welcome and much appreciated.

More about : happened power supply

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davcon said:
Some brands of units are to be avoided,Ultra is one of them.
A quality 750W is fine for your specs.
What's your budget?

Well considering I paid about 170 dollars for that one. I would say around the same price.
What brand do you recommend as the best? Or at least better than X4?
Power supply Master

Here's a review of some Ultra PSU's .... some apparently score quite well .... others don't. The 1st is the X4

5.0 rating http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

9.0 Rating http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

9.0 Rating http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

For an 850 watter, the best buy is the 10.0 performance rated (per jonnyguru) Antec CP-850 but its CPX form factor limits it to just 4 Antec cases. The Antec HCG and HCP series generally garner a 9.5 as does the corsair TX V2 Series. However the XFX Core Editions get the same 9.5 rating as these and the 850 watter can be had for just $90 on newegg

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The corsair TC V2 is $30 more, HX is $80 more.....Seasonic X series is over $200



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Power supply Expert

It's not about how many watts a psu has my friend, it's about the quality of those watts, the protections, the efficiency rating, the warranty and the amps on the +12v rails.

Ever see really cheap set of speakers that says 500w MAX POWER and they are really like 10w. That's because they cheat with their power ratings by using a cheating formula. Same with PSU's.

I wouldn't use an Ultra power supply to power my usb coffee warmer. $170?? WOW, you got robbed at gunpoint.

You could get a high quality 750w psu for $70-$100 shipped.

By high quality I mean Antec, XFX, SEasonic, Corsair, PC power and cooling and even OCZ has some really good Bronze units out now.

This is probably the best deal going right now on a Bronze unit in 750w http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Power supply Master

zeus3081 said:
Well considering I paid about 170 dollars for that one. I would say around the same price.
What brand do you recommend as the best? Or at least better than X4?

CORSAIR Professional Series HX850
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Seasonic X760 Gold
http://us.ncix.com/products/?sku=57600&vpn=X%2D760%20Go...
XFX 750W PRO750W XXX Edition
http://us.ncix.com/products/?sku=62224&vpn=P1750BNLG9&m...
XFX 850W PRO850W XXX Edition
http://us.ncix.com/products/?sku=62223&vpn=P1850BNLG9&m...

geekapproved said:
It's not about how many watts a psu has my friend, it's about the quality of those watts, the protections, the efficiency rating, the warranty and the amps on the +12v rails.

Ever see really cheap set of speakers that says 500w MAX POWER and they are really like 10w. That's because they cheat with their power ratings by using a cheating formula. Same with PSU's.

I wouldn't use an Ultra power supply to power my usb coffee warmer. $170?? WOW, you got robbed at gunpoint.

You could get a high quality 750w psu for $70-$100 shipped.

By high quality I mean Antec, XFX, SEasonic, Corsair, PC power and cooling and even OCZ has some really good Bronze units out now.

This is probably the best deal going right now on a Bronze unit in 750w http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Thank you for the advice.. I'll be heading to Frys Electronics first thing Saturday morning. I'll let u know what i get... Again, thanks.
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