A new fan - Scythe S-FLEX ( fluid dynamic bearing by sony)
Moderators: NeilBlanchard, Ralf Hutter, sthayashi, Lawrence Lee
A new fan - Scythe S-FLEX ( fluid dynamic bearing by sony)
Due Jan 15 according to Scythe's site.
Specifications:
800rpm Version:
33.5CFM / 8.7dBA / DC12V / 0.10A
MSRP: 15 (USD)
see here- http://www.scythe-usa.com/cooler/fan/sflexhtm.htm
Specifications:
800rpm Version:
33.5CFM / 8.7dBA / DC12V / 0.10A
MSRP: 15 (USD)
see here- http://www.scythe-usa.com/cooler/fan/sflexhtm.htm
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Strange specifications
They have other weird fan specs on the site, with a 120mm 1600rpm producing 20.94dbA while the 'slower' 1200rpm version is 'louder' at 27.92dbA
The specs for the fan included with the Ninja Plus also seem different compared to these and the new S-FLEX, which is a pity.
S-FLEX
- 1200rpm Version: 49.0CFM / 20.1dBA / DC12V / 0.15A
Ninja Plus
1200rpm±10%: 46.5CFM / 23.5dBA / Sleeve Bearing
At least the specs for the 1200rpm S-FLEX seem more realistic compared with the 800rpm S-FLEX.
Hmmm, just have to wait for the testing team to get on the case
The specs for the fan included with the Ninja Plus also seem different compared to these and the new S-FLEX, which is a pity.
S-FLEX
- 1200rpm Version: 49.0CFM / 20.1dBA / DC12V / 0.15A
Ninja Plus
1200rpm±10%: 46.5CFM / 23.5dBA / Sleeve Bearing
At least the specs for the 1200rpm S-FLEX seem more realistic compared with the 800rpm S-FLEX.
Hmmm, just have to wait for the testing team to get on the case
Re: Strange specifications
Huh?!Firetech wrote:They have other weird fan specs on the site, with a 120mm 1600rpm producing 20.94dbA while the 'slower' 1200rpm version is 'louder' at 27.92dbA
Code: Select all
Model Number:
S-FLEX SFF21D (800rpm)
S-FLEX SFF21E (1,200rpm)
S-FLEX SFF21F (1,600rpm)
Dimensions:
120 x 120 x 25mm
Specifications:
- 800rpm Version:
33.5CFM / 8.7dBA / DC12V / 0.10A
- 1200rpm Version:
49.0CFM / 20.1dBA / DC12V / 0.15A
- 1600rpm Version:
63.7CFM / 28.0dBA / DC12V / 0.20A
Connector:
3-pin (4-pin adaptor included)
Cable Length:
30cm
Bearing Type:
S-FDB (Fluid Dynamic Bearing by SONY Corporation)
MTBF:
150,000 hours
The weird fan specs that Firetech reported seem to be corrected now because I did not find them in the EU scythe site nor in the USA one.
These fans are really promising since it is a new technology and we all know that sleeve-bearing and ball-bearing are far from perfect.We definitely have to check them out.
I hope SPCR will manage to have some samples to review from Scythe.
These fans are really promising since it is a new technology and we all know that sleeve-bearing and ball-bearing are far from perfect.We definitely have to check them out.
I hope SPCR will manage to have some samples to review from Scythe.
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Oooops
Sorry for the confusion guys, I was quoting specs on their Silent Fan as well as the S-FLEX/Ninja PlusImvd85 wrote:The weird fan specs that Firetech reported seem to be corrected now because I did not find them in the EU scythe site nor in the USA one.
I was just trying to highlight the fact that their fan specs seem a little 'all over the place' generally.
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Good answermathias wrote:scythe's only imitating it, so it's just parrotshit(or monkeyshit).
I honestlty hope not, Scythe has become a wellknown and respected brand on SPCR I really hope they are not trying to Lobstershit us SilenX.
I would much prefer that they just made a typo, and didnt measure them from the house accross the road like SilenX do, with the testing equipment in a vacuum (padded just for the hell of it).
Andy
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I can't speak for the specs, but I can say that the fans themselves are fairly good (we have samples). Smooth sounding and slow enough that they're quiet even at 12V. IIRC, it was a pretty close call between them and the Nexus samples we had on hand, but it's been a while since I've looked at them.
Just to be clear ... the specs reported in this thread are wrong, wrong, wrong ... but the fans are quite good.
Just to be clear ... the specs reported in this thread are wrong, wrong, wrong ... but the fans are quite good.
I wouldn't mind if they did their testing from umpteen meters, as long as they said so on the package.andyb wrote:I would much prefer that they just made a typo, and didnt measure them from the house accross the road like SilenX do, with the testing equipment in a vacuum (padded just for the hell of it).
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I guess it's a typo, it might be 18.7dBA ,don't think it's worth for them to give that kind of elephantshit SPL number just for marketingBean wrote:Yah 8.7 @ 33cfm seems dubious. But sony entering into this field may be a good thing for us.
Btw I remember that there was a waterproof fan from Adda,instead of the Acoustifan Dustproof,they actually show it spin under water inside an aquarium at the showfloor, it might be another method of give lower SPL then.
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I remember one person sending me info about the Sony FDB... I have a funny feeling it is the "fluid dynamic bearing" that ADDA uses (yes technically it is that, but it isn't even near the real fluid dynamic bearing by Panaflo). I'll have search that mail and take a look at the specs when I get home in a few days.
Saying MTBF 150k hours is probably correct. But it would be great if it actually told you anything about the fan lifetime! If you count a MTBF spec for a Panaflo you get 600k-700k hours! It's completely useless. There are various ways of misleading users who don't know these things. If you see MTBF used with fans it basicly is just marketing BS to make it look like the fans have a long lifetime.
L10 is a spec you should be looking for, it actually tells you something about the fan's lifetime (10% of fans not in spec). Although companies like ADDA spec their L10 data according to when the fan is dead. NMB-MAT and Papst for example count their data when the fan is still operating but they are slipping in specification (15% increase in current, 15% decrease in RPM IIRC). If you count it from when the fan is dead you obviously get a longer lifetime.
I'll check the fan specs when I get home. It's not too hard to check the different models (presuming they are the same fan model) and to see if the specs are in line with each other.
Saying MTBF 150k hours is probably correct. But it would be great if it actually told you anything about the fan lifetime! If you count a MTBF spec for a Panaflo you get 600k-700k hours! It's completely useless. There are various ways of misleading users who don't know these things. If you see MTBF used with fans it basicly is just marketing BS to make it look like the fans have a long lifetime.
L10 is a spec you should be looking for, it actually tells you something about the fan's lifetime (10% of fans not in spec). Although companies like ADDA spec their L10 data according to when the fan is dead. NMB-MAT and Papst for example count their data when the fan is still operating but they are slipping in specification (15% increase in current, 15% decrease in RPM IIRC). If you count it from when the fan is dead you obviously get a longer lifetime.
I'll check the fan specs when I get home. It's not too hard to check the different models (presuming they are the same fan model) and to see if the specs are in line with each other.
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Re: Strange specifications
I have the ninja plus, but I have not actually plugged it in at all yet.Firetech wrote:They have other weird fan specs on the site, with a 120mm 1600rpm producing 20.94dbA while the 'slower' 1200rpm version is 'louder' at 27.92dbA
The specs for the fan included with the Ninja Plus also seem different compared to these and the new S-FLEX, which is a pity.
S-FLEX
- 1200rpm Version: 49.0CFM / 20.1dBA / DC12V / 0.15A
Ninja Plus
1200rpm±10%: 46.5CFM / 23.5dBA / Sleeve Bearing
At least the specs for the 1200rpm S-FLEX seem more realistic compared with the 800rpm S-FLEX.
Hmmm, just have to wait for the testing team to get on the case
once i get my fan controller I'll run some tests on it and let you know how it is.
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I googled "Scythe SFF 21E fan" and judging by the results, these fans are readily available in Japan. So if you're located in Japan, you should be in luck. If you're located in the USA, a container ship takes how long to cross the Pacific? Load, unload, customs - maybe a week or two wait?GHz wrote:I'm interested in getting ahold of some samples for evaluation. Any idea where I can get them?
If the blade and bearing designs are pretty good,being a 12v,800 rpm unit ought to be enough to make this a winner. If I take a fan that costs $20,and to get it to 800 rpm,I need a $5 Fan Mate,its a $25 setup. Start at 800,and that's quiet,with C + Q,Smartfan/Q-Fan,or?,it can back down to maybe 500 rpm or less. Some respected fans won't run at 500 rpm,they can't undervolt low enough.
Its now showing in stock at a couple places. Scythe’s website has links for places to buy.
http://www.scythe-usa.com/product/acc/0 ... etail.html#
http://www.scythe-usa.com/product/acc/0 ... etail.html#
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US site re-vamp?
Maybe it's just me but I can't get connected to the jp/eu site and also can't find the various other fans on the US site that I had seen before.Bean wrote:Its now showing in stock at a couple places. Scythe’s website has links for places to buy.
http://www.scythe-usa.com/product/acc/0 ... etail.html#
caveat; it's 04:40
Not sure what to make of the video on the 'review' site. WARNING 3.6Mb file
Ambient noise seems higher than the fan itself, I don't see how it's meant to show low vibration and is that clicking I hear right at the end??