PSU Carnage - Need Advice for a better quality one.

[bitbyebit]

Hey guys.  My first rig attempt was running fine until the PSU blew out.  I am running 4 Sapphires 7950's 4L with a sata HD.  I had a 850 watt PSU.  It ran for three days until it blew out.  Please advise so I can pony up the money for a decent one.  

I saw this one:

COUGAR COUGAR-GX1050 1050W ($151.99)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817553008

and this one:
Rosewill LIGHTNING-1300 1300W  ($219.99)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182063

Or is there one for a decent price that you suggest?  Thanks ahead for any advice.

[ssateneth]

850 watt for 4 7950, which you are probably overclocking and overvolting, I'm not surprised it blew up. That's easily 1200 watts DC.

I have 4 rosewill lightning 1300, 2 of which I run close to or at 100% capacity with 6 x 7970 undervolted and overclocked (bitcoin, not litecoin). They hum along without breaking a sweat.

There seems to be a lot of hype about the lepa 1600W, but I am not a fan of multi rail. I absolutely hate load balancing.

[r3wt]

about the lepa 1600W, but I am not a fan of multi rail. I absolutely hate load balancing.

all modern psu's are dual rail.

[wheatrich]

As noted 4 sapphires + components needs more power than what you were giving it.

My advise is to figure out how much power you need and get a power supply that has more W's than that (add some to be on the safe side).

[-ck]

about the lepa 1600W, but I am not a fan of multi rail. I absolutely hate load balancing.

all modern psu's are dual rail.

Not true, my OCZ gold 1250W PSU is single rail and I ran 4 7970s on it for 18 months.
http://www.kitguru.net/components/power-supplies/zardon/ocz-zx-1250w-power-supply-review/

[HellDiverUK]

about the lepa 1600W, but I am not a fan of multi rail. I absolutely hate load balancing.

all modern psu's are dual rail.

No they aren't.

[bitbyebit]

My Killawatt was saying around 900-910 was being used.  I was hoping my 850w psu could handle it but it couldn't.  I'm leaning to the Rosewill being that so many people have given it such good reviews compared to the other.

As noted 4 sapphires + components needs more power than what you were giving it.

My advise is to figure out how much power you need and get a power supply that has more W's than that (add some to be on the safe side).

[HellDiverUK]

I'm pretty happy with my XFX 1250W unit.  Got excellent review at Jonnyguru, and it's basically a cheaper Seasonic (same guts, different case).

I've also got an older Zalman 1000W which is fine, too.  I got it used off eBay, though it's a bit short of PCI-E connectors, so resorted to Molex adapters which I don't like using.

[zackclark70]

buy your self a ax1200 and you will have no problems ( i have ax1200s on my 4 card rigs i get 2500kh out of 4 cards pulling 925w from the wall )

i have also got a 3 card rig with hx750 710w from the wall

[natbyte]

Argee the corsair ax range are awesome, thumbs up from me I run three 1200w all powering four 7950s per rig.

[Xian01]

My Killawatt was saying around 900-910 was being used.  I was hoping my 850w psu could handle it but it couldn't.  

 *facepalm*

[Cpt_Ginu]

My Killawatt was saying around 900-910 was being used.  I was hoping my 850w psu could handle it but it couldn't.  

 *facepalm*

No reason to facepalm...His Kill-A-Watt would measure the wall usage. The rating is for what the PSU will put out. Since the efficiency isn't 100% his hope wasn't that misplaced. I would go bigger to get some headroom but that psu should have been able to handle.

[bitbyebit]

Yes, it handled it for about three days.

[zackclark70]

Yes, it handled it for about three days.

what part of the psu failed ?

[bitbyebit]

Yes, it handled it for about three days.

what part of the psu failed ?

Well the fan is not turning on the PSU anymore.  I do see the LED lights on the MOBO but the PSU will not turn on.  I unplugged everything from the mobo and the PSU still doensnt turn on.  I checked the MOBO and I dont see any burnt plugs.

[zackclark70]

Yes, it handled it for about three days.

what part of the psu failed ?

Well the fan is not turning on the PSU anymore.  I do see the LED lights on the MOBO but the PSU will not turn on.  I unplugged everything from the mobo and the PSU still doensnt turn on.  I checked the MOBO and I dont see any burnt plugs.

have you tryed terning it on with the bare minimum conected to the motherboard ?

[bitbyebit]

I haven't tried that but I will.  Thanks for suggesting it.  I am just starting on this hobby.

[zackclark70]

I haven't tried that but I will.  Thanks for suggesting it.  I am just starting on this hobby.

no probs if you need advice pm me

thanks
zack

[Xian01]

No reason to facepalm...His Kill-A-Watt would measure the wall usage. The rating is for what the PSU will put out. Since the efficiency isn't 100% his hope wasn't that misplaced. I would go bigger to get some headroom but that psu should have been able to handle.

 Ok ok. I admit that was a little bit snarky. Apologies. Did not consider other things on the Kill-A-Watt.

 I'm a bit OCD and like to have 20% headroom on my PSU's for the TDP I'm doing per chassis.

[bitbyebit]

I haven't tried that but I will.  Thanks for suggesting it.  I am just starting on this hobby.

no probs if you need advice pm me

thanks
zack

Hello:  Well I tried everything again.  I'm pretty sure this PSU is dead.  I ended up ordering the Rosewill Lightning 1300w.  Hopefully I will be safer with enough power.