Sharkoon 2000 or Scythe S-FLEX 1600?

specofdust · Post by **specofdust** » Fri Apr 27, 2007 12:52 am

Hi all,

My CPU is getting very toasty in my case under load, so I'm thinking of installing an extra 120mm fan onto the heatsink and having it on a 0/5/12V switch.

My question is, would I be better with a sharkoon Golf Ball 2000 or a Scythe S-FLEX 1600? Noise is obviously a concern, but the thing could do with being able to move some air, given that it's just going on for when my CPU's hitting the mid-70's.

Thanks for any advice people can give

jaganath · Post by **jaganath** » Fri Apr 27, 2007 2:22 am

spec-wise,Sharkoon is rated for more CFM (76 vs 63) as one would expect with 400 more RPM. problem is they don't tell you the pressure capacity so hard to tell which will give higher performance in your case. also Sharkoon is slightly cheaper.

Bluefront · Post by **Bluefront** » Fri Apr 27, 2007 2:56 am

This is a subject I've considered many times. IMHO.....you would like that particular fan to be of some use at 5V. If both fans are quiet enough at 5V, and both can start reliably at that voltage, your best choice would be the fan that blows the most air at 5V. This probably would be the fan that turns the most RPM/CFM at that voltage. You would think the fan that turns the fastest at 12V, would turn the fastest at 5V. This is not always the case.

My Yate Loon turns about 1350rpm at 12V. My S-Flex turns about 1600rpm at 12V. At 5V the Yate Loon is running about 150rpms faster than the S-Flex. This has to do with the motor windings/magnets. So I guess it pays to check the fans you intend to use at 5V for rpm/noise. 12V is probably too noisy for each of those fans you mentioned, so you will be using 5V more often. Perhaps you could find the spec of each fan at 5V......good luck with that.

AgustF · Post by **AgustF** » Fri Apr 27, 2007 3:15 am

I would use a Noctua fan , it has the most cfm to rpm off any fan on the market today. And it is very quiet.
It is build on some new technology something with better rotor blades thingy.

Check it out...

jaganath · Post by **jaganath** » Fri Apr 27, 2007 4:06 am

Noctua fan , it has the most cfm to rpm of any fan on the market today

Debatable. Scythe S-FLEX SFF21E has similar specs. Several posters have mentioned poor pressure capability (cfm falls off sharply with backpressure). SPCR's CFM testing method produced anomalously high result.

specofdust · Post by **specofdust** » Fri Apr 27, 2007 7:50 am

Thanks for the replies guys.

As pointed out the Noctua's aren't quite fully proven yet, so I'm going to be avoiding them for now(especially since, if there are the pressure issues that some people are reporting, it being on a CPU HSF is going to be near useless).

I've decided I'll give a sharkoon 2000 a go, and see how it runs. It gives me a higher ceiling for hot days when my CPU is running worryingly hot, but should go quiet enough at 5V(or of course, 0V) for me to put up with it. Thanks everyone

EndoSteel · Post by **EndoSteel** » Fri Apr 27, 2007 12:33 pm

Could you name the heatsink? If it's a Ninja, than the golf fan is a better option (good flow and noise performance at the cost of pressure), if it's a Big Typhoon - I'd go for the S-Flex (good pressure, low flow).

specofdust · Post by **specofdust** » Fri Apr 27, 2007 12:47 pm

Ah yes, should have mentioned the heatsink in the OP. It's a Scythe Infinity. I've got it pressure mounted and lapped also, but it's not sitting so great(some caps are preventing it from making a good contact) so that's probably why my temps are so insane. I'll probably have to just replace it with an Ultra-120 Extreme or something if these fans don't take my temps to reasonable(and stable) levels.

specofdust · Post by **specofdust** » Thu May 03, 2007 2:55 am

Well, I got them both, and they're both pretty horrible at 12V. The sharkoon is loud at 12, while the S-flex isn't loud, but has a nasty whine about it that makes the sound quality just overall bad. The Scythe is ok 7 volted and the Sharky at 5V - but I'm tempted just to replace them with Nexus' fans or something at 12 during the day.

Matija · Post by **Matija** » Fri May 04, 2007 7:37 am

I wanted to buy a couple of golfballs and put them at 5V. What do you mean by "okay"? Can you see at what speed they are spinning?

specofdust · Post by **specofdust** » Fri May 04, 2007 11:21 am

Well the 2000 is ok in my opinion at 5V. It's quieter then a 12V nexus by a fair bit. But at night I'm turning the 2K off, it's noisy enough that I can tell when I turn it off, and a few degrees less at night isn't worth having.

I havn't a clue what speed the things are actually spinning at, and speedfans RPM meter is broken.

jaganath · Post by **jaganath** » Fri May 04, 2007 11:37 am

I havn't a clue what speed the things are actually spinning at

probably ~1000rpm, 2000@5V has same cooling and noise as 1000@12V: link

Matija · Post by **Matija** » Fri May 04, 2007 12:12 pm

Thanks for the information. I guess I'll have to use a resistor along with the Fan Mate when I finally find the time to go buy the fans... If they're at ~1000 rpm at 5V, they require further downvolting...

specofdust · Post by **specofdust** » Fri May 04, 2007 12:35 pm

To be honest I wouldn't bother with the 2000's. The fact that you're on SPCR means that at 12V they're likely to be too noisy for you. I've also got some of the sharkoon 1000's and they're fairly decent fans - if a little on the weak side of things.

Matija · Post by **Matija** » Fri May 04, 2007 2:01 pm

I'm from Croatia.

I can choose between crap, more crap, plenty of other crap (but totalling no more than 7-8 different pieces of crap), and the occasional average (like this Golfball 2000).

I did find a Papst 2/FGLL, but it's 50% more expensive than the golfball, and I need two of them...

jaganath · Post by **jaganath** » Fri May 04, 2007 2:15 pm

I'm from Croatia. I can choose between crap, more crap, plenty of other crap

you could try silencio_777 on Ebay,he has Yate Loons,i'm sure he will ship to Croatia,only problem is how to pay him.