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Super Flower 850W

post #1 of 10
Thread Starter 
Im going SLi shortly & so need to upgarde my 450W PSU.

Ive been looking at this one http://www.super-flower.com.tw/produ...roducts_id=195 and was wondering if anyone has any good/bad experiences with this brand? (cant find much on the net about them).

cheers
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post #2 of 10
No idea about the brand. Specs look decent. Main drawback is that it's a multi-rail design.

Can you get your hands on a Silverstone OP750 or DA750? They deliver 60A on a single 12V rail. Also, the PC Power & Cooling 750W does that, but I am not sure you can get it in Australia.
    
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post #3 of 10
I have a super-flower 530watt running my system right now and it's been going strong for about 2 years now. Can overclock both my 7950gx2 and my 4200 quite nicely and it's nice and stable. Very quiet too.
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post #4 of 10
well with it having nvidia's sli stamp of approvement i cant say it is going to be garbage. but i have also never heard of the brand. when there is that stamp saying its "sli-ready" that just means nvidia has tested it. what kind of warranty does it have? so depending on its warrant and its price id give it a try. but i wouldnt trust me. trust chozart if anyone.
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post #5 of 10
Multirails are great to have, as they help keep stability and move voltage to what is needed. So Chozart, having 1 main rail is not always that good, especially if it fails.
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post #6 of 10
I've got the 600 Watt version of that PSU, and I find it really great, no problems with it. And the fan is pretty quiet as well, I can't hear it over my case fans(My case fans aren't really that loud either)
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post #7 of 10
Quote:
Originally Posted by sepheronx View Post
Multirails are great to have, as they help keep stability and move voltage to what is needed. So Chozart, having 1 main rail is not always that good, especially if it fails.
This is incorrect and the whole multi-rail thing is just a market ploy. PSUs with true separate rails are hard to find, and most are just split late in the process.

Multi rail PSUs came into existance because of an EU regulation that a single rail could not deliver more than 240VA. Intel and others incorportated this in the then-current ATX12V standard, and actually limited any rail to 18A, to allow for some headroom.

Later, this standard was dropped again, and PSUs with heavier rails occured again, and also rails with powerful single rails appeared at the high end.

In the end what matters is quality. Current single rail PSUs like the Silverstone OP/DA series and the PC Power & Cooling units are excellent in quality and performance.

Note also that most multi rail PSUs are build with lesser quality materials since after splitting the rails, the parts needed only need to handle up to 20A or so instead of the complete 60A.

Since the source of the power is mostly a single source (give me a list of PSUs with true separate rails... there are few). The main advantages of good quality single rail PSUs is that they are more stable (don't believe marketing ploys that say otherwise), and that the load distribution is a LOT easier. Failure is the same in either case... rare are the cases that in a multi rail PSU one rail fails that the others will be unaffected.
    
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post #8 of 10
Quote:
Originally Posted by sepheronx View Post
Multirails are great to have, as they help keep stability and move voltage to what is needed. So Chozart, having 1 main rail is not always that good, especially if it fails.
If one rail fails, all of them do, since they are based off of one transformer. One rail is almost always better. The only case would be if the mulirail had more power...

And Chozart beat me to it.
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post #9 of 10
Thread Starter 
thanks for the replies
Firefly
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Firefly
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post #10 of 10
Quote:
Originally Posted by Chozart View Post
This is incorrect and the whole multi-rail thing is just a market ploy. PSUs with true separate rails are hard to find, and most are just split late in the process.

Multi rail PSUs came into existance because of an EU regulation that a single rail could not deliver more than 240VA. Intel and others incorportated this in the then-current ATX12V standard, and actually limited any rail to 18A, to allow for some headroom.

Later, this standard was dropped again, and PSUs with heavier rails occured again, and also rails with powerful single rails appeared at the high end.

In the end what matters is quality. Current single rail PSUs like the Silverstone OP/DA series and the PC Power & Cooling units are excellent in quality and performance.

Note also that most multi rail PSUs are build with lesser quality materials since after splitting the rails, the parts needed only need to handle up to 20A or so instead of the complete 60A.

Since the source of the power is mostly a single source (give me a list of PSUs with true separate rails... there are few). The main advantages of good quality single rail PSUs is that they are more stable (don't believe marketing ploys that say otherwise), and that the load distribution is a LOT easier. Failure is the same in either case... rare are the cases that in a multi rail PSU one rail fails that the others will be unaffected.
Not refuting anything but throwing in more info...

"Separate" rails help reduce line noise/EMI since each rail should have a their own filter. However, this has only marginal impact.

Separate rails each have a current overlimit. If the PSU blew and had a voltage spike, it is more likely at least some of your components are ok with multiple rail. However, quality PSUs should never blow.
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