Monday, October 27th 2014

Streacom Announces ZeroFlex 240W Fanless Power Supply

Streacom is pleased to announce the ZF240 (ZeroFlex), a 240W, no fan, no noise, internal PSU that is based on the Flex form factor.The challenge has always been to supply high power, not only in a small package but also without any active cooling. To do this we have used extremely high quality components and developed an innovative power circuit that is more that 93% efficient. 240W may not seem a lot, but to put things into perspective, if this PSU had active cooling, it could easily run at 450W, and its still less than half the size of a standard ATX PSU.

Even with the high levels of efficiency, heat is inevitable, which is why we have the unique 'L' bracket which connects the PSU directly to the case heatsink, and is designed to dissipate the heat outside the chassis. The AC socket is also mounted on a cable instead of being fixed to the body of the PSU, allowing for flexible positioning and more innovative future case designs.
The ZF240 is compatible with the Streacom FC5 Evo, FC9 and FC10 and will remove the need for an external power supply whilst increasing the maximum power available to components.
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13 Comments on Streacom Announces ZeroFlex 240W Fanless Power Supply

#1
btarunr
Editor & Senior Moderator
240W should be enough for a Core i5 quad + GTX 970 + SSD system.
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#2
haswrong
btarunr
240W should be enough for a Core i5 quad + GTX 970 + SSD system.
its only so-so if all is under heavy load. i would prefer 300W.
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#3
jabbadap
Any change to get it reviewed? Seems like a perfect brick for htpcs.
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#4
micropage7
looks pretty good, i hope they release any bigger version of this
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#5
wickerman
jabbadap
Any change to get it reviewed? Seems like a perfect brick for htpcs.
That is exactly what I was thinking to replace the 150w brick + PicoPSU powering my HTPC. Its an undervolted/underclocked A10-5700 at its base but still works great. A unit like this would give me much more flexibility and be able to reduce the physical foot print of the system a bit more.

Really quite interested in seeing what this unit could do, would love to read a TPU review of it!
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#6
McSteel
@crmaris man, you gotta test and crack this thing open!

It shows some promise, and we need to know if it delivers.
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#7
theJesus
This would be great for reducing the noise level of my Rackables se3016 HDD enclosure, but I wonder how well the passive design would work in such a situation . . .
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#8
jabbadap
www.streacom.com/products/zf240-fanless-240w-zeroflex-psu/
Power Output: 240W Combined, 3.3V @ 10A, 5V @ 10A, 5VSB @ 2A, 12V @14A, -12V @ 0.3A
Noooooooo, only 12*14A=168W for 12V line. Well enough for fm2+ apus, but don't put discrete graphics card on it. Hmh maybe i3 and i5 -t models with combined 100W> discrete graphics card, but thats all.
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#9
crmaris
Reviewer
McSteel
@crmaris man, you gotta test and crack this thing open!

It shows some promise, and we need to know if it delivers.
I am a little skeptic about the fact that it delivers only 168 W at +12V so I won't be able to run all the tests I want. On top of that its cables are too short so it won't fit inside my thermal chamber and for me cold tests are meaningless, especially in a PSU like this one that is intended for mini-cases with restricted airflow.

Will think about it, though. Just don't wanna give any promises especially this period that I have so many samples on the pile and everyone (PRs) is pushing.
Posted on Reply
#10
crmaris
Reviewer
jabbadap
www.streacom.com/products/zf240-fanless-240w-zeroflex-psu/


Noooooooo, only 12*14A=168W for 12V line. Well enough for fm2+ apus, but don't put discrete graphics card on it. Hmh maybe i3 and i5 -t models with combined 100W> discrete graphics card, but thats all.
It doesn't have any PCIe connectors, something expected since 14A wouldn't suffice.
Posted on Reply
#11
jabbadap
crmaris
It doesn't have any PCIe connectors, something expected since 14A wouldn't suffice.
Well it has one molex, which should able to push 11A/pin, so molex to 6-pin pcie adapter should work just fine. But yeah it's not enough for serious graphic card.
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#12
ChristianS
I have just received my Streacom ZF240, together with the FC5 Evo case. If anyone is interested, I did take the cover off because I wanted to know where the heat-sources are before I decide where to mount it, and found the internal boards to be IOASPOW branded. The main board was marked as AAD260A ver 2.0; the closest I can find on ioaspow.com is AAD260C which is a fan-cooled 300W server PSU with a 18A 12V rail. The secondary boards I could see were N12V-C rev 1.0, ATX D-D ver 1.1, 6901-C rev 2.0 (all IOASPOW) and PFC-C 1.1 (did not see a brand name).

As to the heat sources, the aluminium angle iron on the outside is actually mounted on approximately 3 mm high studs and is except for the 3 small screws only in contact with the power supply through a thermal pad at the top side corner where the logo is. Underneath that thermal pad is a smaller piece of aluminium sticking through a hole in the top cover, which cools a power mosfet (presumably the primary one). Under the cover are two other similar heat sinks which is only connected to the cover itself, through thermal pads.

I had hoped the design was optimized a bit better/more for passive cooling, although there should be less than 20 W heat to get rid of based on the claimed maximum power and efficiency. My impression of the quality is that it is above average compared to other power supplies I have looked at, although when considering the price I think it is barely adequate even when allowing for it being a small volume unit, especially since the modifications to an existing design seems minor. In comparison I paid about the same for a Corsair HX750 a few years ago, which with fully sleeved modular cabling, 7 years warranty and similar efficiency with significantly higher power seems to represent much better value. An external "brick" is however not acceptable to me, and since I have not seen any comparable options for something like the FC5 series cases, I think the ZF240 is to be recommended.

I will unfortunately not get to test it for a while yet as I intend to wait for Broadwell for this build, I bought the PSU and case early because of a sale offer.

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#13
Aquinus
Resident Wat-man
btarunr
240W should be enough for a Core i5 quad + GTX 970 + SSD system.
What gives you that crazy idea? I don't think the 970 is feasible for one really good reason that crmaris hit.
crmaris
It doesn't have any PCIe connectors, something expected since 14A wouldn't suffice.
The specs also only call for 14A on +12v.
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