Fortron Zen fanless 300W ATX PSU
Any information on how this would affect systems based on an Antec 3x00 series case with respect to hard drive cooling? Opening up the PSU as an intake would likely require putting a low speed fan infront of the hard drives.
Also, does anyone know if Fortron plans to create a fanned version of this PSU? I realize it's not the point of this particular unit, but perhaps they will come out with derivatives of this unit.
Also, does anyone know if Fortron plans to create a fanned version of this PSU? I realize it's not the point of this particular unit, but perhaps they will come out with derivatives of this unit.
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ive been running my system on this kind of psu for about 3 months.
asus p5gd1-vm mobo, 3.0ghz lga775 p4, 1024mb ddr, 200gb maxtor sata, 400gb seagate sata, a geforce 6600 256mb pci-e and all that other small stuff[fans, dvd etc]
ive never had any problems with power failures and shutdown issues.
runs smoothly always, i also have my computer going 24/7 so im very happy with my fsp zen psu.
you guys really must have gotten an odd sample :-/
although i agree that for example the 24 pin cable is a little short.
asus p5gd1-vm mobo, 3.0ghz lga775 p4, 1024mb ddr, 200gb maxtor sata, 400gb seagate sata, a geforce 6600 256mb pci-e and all that other small stuff[fans, dvd etc]
ive never had any problems with power failures and shutdown issues.
runs smoothly always, i also have my computer going 24/7 so im very happy with my fsp zen psu.
you guys really must have gotten an odd sample :-/
although i agree that for example the 24 pin cable is a little short.
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FSP have a claimed high efficiency fanned PSU, the Green Power, with a 120mm fan. The fan isn't great (makes a clicky noise at low speeds) so I swapped mine out for a Yate Loon D12SL - it's now effectively silent. No idea how efficient it is (claimed >85% at full load), though thanks to some figures from another owner MikeC did some back-of-a-fag-packet calculations which indicated >80%. Funnily enough they've gone the opposite route on the heat sinks in the Green Power - they're minute, though the insides of the PSU are very minimalist overall. Relatively cheap too
Heh, I was wondering myself how easily one could remove the rear mesh..... maybe it just unclips or something.ddrueding1 wrote:
The first (incredibly unsafe) idea to come to mind was: how much better would the airflow be if the mesh was cut away?
Sounds like a good product, although I'll be interested in what comes up with the PSU/video card analysis and what lead to the failure.
Why wouldn't airflow be greater? "Decoupling" interior and exterior airflow sounds like marketing doublespeak to me.vertigo wrote:
It wouldn't be at all. The point of the mesh is so that air enters/exits over the whole surface area of the vent. It decouples the interior airflow from the exterior.
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When little air flows, the mesh is not overly restrictive, and the air moves pretty much as it would otherwise. If the pressure is a bit greater, the mesh will restrict the air somewhat, the pressure will be just about equal over the whole surface area. Air will be introduced all over, it's like having a mini-fan in each little mesh hole. Surely you can see this is better than a small band of fast moving air which doesn't encompass the whole unit.Why wouldn't airflow be greater?
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Greetings,
My take on the Zen is that it would be better if it had a larger and more open rear grill -- that "encouraged" a natural heat siphon, to help exhaust heat out of the case. And it should be used with a neutral-to-positve air pressure system.
The interesting thing is that Fortron Source builds all or most of the power supplies that AOpen sells! So, they have a better chance to solve this issue.vertigo wrote:Good job notifying AOpen about their video card, it means they can respond if Fortron lays the blame on their doorstep.
My take on the Zen is that it would be better if it had a larger and more open rear grill -- that "encouraged" a natural heat siphon, to help exhaust heat out of the case. And it should be used with a neutral-to-positve air pressure system.
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The $110 figure is from the only North American vendor I could have that listed it as an orderable item: NCIX.
It's a special order item, and will probably remain at that price until (and if) it becomes readily available on this continent. Personally, I think $110 is pretty good when you consider that most fanless PSUs come it at $150+.
It's a special order item, and will probably remain at that price until (and if) it becomes readily available on this continent. Personally, I think $110 is pretty good when you consider that most fanless PSUs come it at $150+.
$110 for a fanless is certainly very good, but this one uses a new approach that is much cheaper to produce. So I expect this PSU to go down in price. If it goes down to mainstream PSU prices ($60-90), then that would be very beautiful!Devonavar wrote:The $110 figure is from the only North American vendor I could have that listed it as an orderable item: NCIX.
It's a special order item, and will probably remain at that price until (and if) it becomes readily available on this continent. Personally, I think $110 is pretty good when you consider that most fanless PSUs come it at $150+.
I'm sorry, but I still don't see how airflow might not be better. With airflow so weak to begin with I think you should do everything to improve it, especially since the volume of heated air trying to get out of the PSU is being fed by the case components as well as the PSU heatsinks. Just like a case fan setup where you try to make sure the intake and exhaust are both free flowing. Even the review said that the mesh looked like it blocked 50% of the area and that this was probably detrimental...vertigo wrote: When little air flows, the mesh is not overly restrictive, and the air moves pretty much as it would otherwise. If the pressure is a bit greater, the mesh will restrict the air somewhat, the pressure will be just about equal over the whole surface area. Air will be introduced all over, it's like having a mini-fan in each little mesh hole. Surely you can see this is better than a small band of fast moving air which doesn't encompass the whole unit.
Heh, funny you say this, because personally I'm worried that the price is going to go UP if demand is high. It's a great deal for a totally silent and super efficient power supply. (Crosses fingers on reliability.)cotdt wrote:$110 for a fanless is certainly very good, but this one uses a new approach that is much cheaper to produce. So I expect this PSU to go down in price. If it goes down to mainstream PSU prices ($60-90), then that would be very beautiful!
What was detrimental was not the mesh per sé but the limited area for air to exhaust. The review said that it would have been better to have the mesh over the whole back panel, to let more air out. They went on to say that a 50% mesh is too restrictive, but my Nexus 350W has the same mesh, so it seems typical. The problem is the small area of the mesh on that back face.Even the review said that the mesh looked like it blocked 50% of the area and that this was probably detrimental...
Correction: Now that I have taken a look at the Nexus mesh it seems about 30% at most, so I will concede that 50% is perhaps stretching it. However, with no fan the mesh walls aid to eliminate hotspots, as I tried to explain previously.
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very nice review. I think I will buy this actually for my 1.2 ghz tualatin server. It has 3 120 mm fans, one intake one exhaust and one on cpu.
My only gripe with ALL of MikeC's tests is the usage of Pentiums. Who buys one who also intends to run silent? i'd say 10% of the people here do at maximum.
I guess its the ultimate test of the crappiest system which means it would work great on an amd system?
Always been a question of mine. At least the 2.4ghz is finally ditched. thats like 3 years old.
My only gripe with ALL of MikeC's tests is the usage of Pentiums. Who buys one who also intends to run silent? i'd say 10% of the people here do at maximum.
I guess its the ultimate test of the crappiest system which means it would work great on an amd system?
Always been a question of mine. At least the 2.4ghz is finally ditched. thats like 3 years old.
Fortron PSU's have it where it counts
Tom's Hardware has conducted a demanding test of several PSU's for reliability, stability & acoustics. Multiple failures amongst various vendors. Antec units were toast.
They have reviewed the same Fortron 60GNF - and it passed with flying colors.
http://www.tomshardware.com/howto/20050 ... st-12.html
They have reviewed the same Fortron 60GNF - and it passed with flying colors.
http://www.tomshardware.com/howto/20050 ... st-12.html
I think its nice they use Intel, as it puts the most demand on the PSU power-wise and thermally. If it works with a prescott, it works with everythingvertigo wrote:I don't see that there's a difference. I mean, a psu works for all cpu's anyhow, the rating is all that counts. If they show the rating is accurate, that a 300W runs stably at 300W, what does it matter if it was an Intel or AMD?My only gripe with ALL of MikeC's tests is the usage of Pentiums.
AtW
A couple of minor errors I noticed in this review:
1. The link to Intel's website (right under "A Good Second Sample") doesn't work, as it uses a href of htto:// instead of http://
2. The motherboard used in the second test can't be the Intel D945PLM. Intel's 945P series motherboards don't have integrated video, but the 945G series does.
Otherwise, great review guys.
1. The link to Intel's website (right under "A Good Second Sample") doesn't work, as it uses a href of htto:// instead of http://
2. The motherboard used in the second test can't be the Intel D945PLM. Intel's 945P series motherboards don't have integrated video, but the 945G series does.
Otherwise, great review guys.
I could predict the end result as soon as i read that you were going to make it power a 3.6G, 110W P4
Tbh, i think its due to the weak 12v rails. if they were combined into one rail, the psu would have probably ran that system fine. Imho, in a powersupply with such weak power rails, its foolish to have dual 12v rails.
Tbh, i think its due to the weak 12v rails. if they were combined into one rail, the psu would have probably ran that system fine. Imho, in a powersupply with such weak power rails, its foolish to have dual 12v rails.
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Wrong. 110W = 12V x 9A. The Zen's 12V2 output is 14A, which is 50% higher than required by the CPU. The total power drawn was just 240W AC, which was 100W less than the maximum load with which the unit worked fine on the test loader. Besides, chances are, either of the two 12V lines can put out at least 18A; the current limit on the 12V lines is usually ~20A per line. See the sticky on this topic in the PSU forum: http://forums.silentpcreview.com/viewtopic.php?t=23916TMM wrote:I could predict the end result as soon as i read that you were going to make it power a 3.6G, 110W P4
Tbh, i think its due to the weak 12v rails. if they were combined into one rail, the psu would have probably ran that system fine. Imho, in a powersupply with such weak power rails, its foolish to have dual 12v rails.
It was something else that caused the failure.
Looks identical except colour, though the reviewer only mentions one 12 V rail.
http://www.guru3d.com/article/gengoods/247/1/
http://www.guru3d.com/article/gengoods/247/1/