A new fan - Scythe S-FLEX ( fluid dynamic bearing by sony)

Bean · **Posted:** Fri Jan 13, 2006 9:31 am

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

Aris · **Posted:** Fri Jan 13, 2006 9:46 am

8.7, lol

its probably quiet, but i doubt its that quiet.

Bean · **Posted:** Fri Jan 13, 2006 9:54 am

Yah 8.7 @ 33cfm seems dubious. But sony entering into this field may be a good thing for us.

JazzJackRabbit · **Joined:** Fri Jun 18, 2004 6:53 pm **Posts:** 1360

Quote:

Outstanding Long Life of 15000 Hours

Patent Pending "S-FDB" structure allows the fan to last up to 150,000 hours.

lol, outstanding life of 15K hours??? At least they could have proofread it.

Anyway, it might help bearing noise, but the air whoosh will still be there.

Firetech · **Posted:** Fri Jan 13, 2006 11:53 am

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 :wink:

rpsgc · **Posted:** Fri Jan 13, 2006 12:06 pm

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

Huh?!

Code:

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

Imvd85 · **Posted:** Fri Jan 13, 2006 12:16 pm

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.

rpsgc · **Posted:** Fri Jan 13, 2006 12:19 pm

Either way, a 800rpm 120mm fan will definitely be quiet

Shadowknight · **Posted:** Fri Jan 13, 2006 12:21 pm

rpsgc wrote:

Either way, a 800rpm 120mm fan will definitely be quiet

Unless it's a Vantec Stealth. 120 and 92mms aren't quiet at any speed.

mathias · **Posted:** Fri Jan 13, 2006 12:47 pm

Hahah! That'll shut the silenx fanboys up. There's no way they can argue with "8.7 dBA". :mrgreen:

Firetech · **Posted:** Fri Jan 13, 2006 12:59 pm

Imvd85 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.

Sorry for the confusion guys, I was quoting specs on their Silent Fan as well as the S-FLEX/Ninja Plus :oops:

I was just trying to highlight the fact that their fan specs seem a little 'all over the place' generally.

theyangster · **Posted:** Fri Jan 13, 2006 2:28 pm

interesting...

andyb · **Posted:** Fri Jan 13, 2006 4:32 pm

If those numbers are right it would be a fan revolution, however I think that they may be quoting the noise the spindle produces, and not the fan itself.

8.7DB, Bullshit, Cowshit, Rabbitshit, Mooseshit, Whalesh.............. No way.

I would have to read a review on SPCR to believe it.

Andy

mathias · **Posted:** Fri Jan 13, 2006 5:54 pm

No need for such namecalling. These kinds of ludicrous specs are silenx's and thermaltakes charactaristic strategy, scythe's only imitating it, so it's just parrotshit(or monkeyshit).

andyb · **Posted:** Fri Jan 13, 2006 6:13 pm

mathias wrote:

scythe's only imitating it, so it's just parrotshit(or monkeyshit).

Good answer

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

Devonavar · **Posted:** Fri Jan 13, 2006 6:44 pm

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.

mathias · **Posted:** Fri Jan 13, 2006 6:51 pm

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).

I wouldn't mind if they did their testing from umpteen meters, as long as they said so on the package.

niels007 · **Joined:** Mon Nov 22, 2004 2:18 am **Posts:** 446

8.7db... well if you stop breathing and your heart stops, and after you've fallen dead on the ground, that might be a measurable value... In the real world.. nah

Weldingheart · **Joined:** Wed Dec 07, 2005 6:04 am **Posts:** 192

Bean wrote:

Yah 8.7 @ 33cfm seems dubious. But sony entering into this field may be a good thing for us.

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 marketing

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.

Imvd85 · **Posted:** Fri Jan 13, 2006 7:54 pm

Nice to hear the SPCR guys have samples.
When are we seeing a review?

Techno Pride · **Joined:** Tue Jun 03, 2003 12:57 am **Posts:** 325

Those look like ADDA fans to me :?:

winguy · **Joined:** Tue Nov 02, 2004 9:31 am **Posts:** 447

Nice. In the long run these might be better than Nexus.

Aleksi · **Posted:** Sat Jan 14, 2006 4:42 am

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! :evil:

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.

klankymen · **Posted:** Sat Jan 14, 2006 5:01 am

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 :wink:

I have the ninja plus, but I have not actually plugged it in at all yet.

once i get my fan controller I'll run some tests on it and let you know how it is.

GHz · **Joined:** Fri Jun 24, 2005 12:54 pm **Posts:** 190

I'm interested in getting ahold of some samples for evaluation. Any idea where I can get them?

Thanks.

Felger Carbon · **Posted:** Sat Jan 14, 2006 9:26 am

GHz wrote:

I'm interested in getting ahold of some samples for evaluation. Any idea where I can get them?

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?

ronrem · **Posted:** Tue Jan 17, 2006 12:55 am

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.

winguy · **Joined:** Tue Nov 02, 2004 9:31 am **Posts:** 447

There's a brief article here.

Bean · **Posted:** Tue Jan 24, 2006 5:45 am

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 ... tail.html#

Firetech · **Posted:** Tue Jan 24, 2006 9:42 am

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 ... tail.html#

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.

caveat; it's 04:40 :wink:

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??

A new fan - Scythe S-FLEX ( fluid dynamic bearing by sony)

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