Orochi Compatibility List

[scyth]

Thank u for your answer.

So, this is good news, I can use this heartsink with my devices. Do I need any mounting clips?

Can u tell me now if I can use it WITHOUT fan? No any case fans either.
My cpu needs max 95W.

[Oli]

I personally don't think this will work out with a 95W CPU. But the 500 rpm Kaze Maru fan delivered with Ororchi is really silent. As the fan is in the package anyway you can try all combinations. You should also check if Orochi fits your pc case.

Those triple core AMD CPUs aren't really designed for fanless usage - perhaps it could be possible with a very good and intelligent airflow from at least 1 case fan but w/o case fans i'd really suggest to use the Kaze Maru - and if possible - reduce its voltage/rpm if the CPU temps allow it. With 400 or less rpm it should be virtually inaudible. Also think about undervolting if passive or semi-passive is of interest.

Mounting clips for AM2/AM3 are already included with Orochi, no matter if Rev A or B.

[scyth]

My chieftec case has a width of 20cm...is it enough?

A cpu of 95W is a low energy cpu.

I wonder why u said that "Those triple core AMD CPUs aren't really designed for fanless usage"... then which cpu's r for fanless use? My previous double core needed more power and heat.

The undervolting is a job for mobo's programs like cool&quiet, q-fan etc.

Point is… if this “animal” needs a fan, then why choose it??

[Oli]

20cm should be sufficient but check this thread for proper measuring of the distances in your case and comparison with Orochi dimensions:
Orochi Dimensions

It also depends on the inner layout of your case.

Orochi doesn't exist for passive usage only! The construction of Orochi enables you to run passively with certain CPUs AND enables you to simply reduce the rpm necessary for the same cooling effect. One has to admit that since the release of Mugen 2 and Ninja 2 - which are just the newer generation of Scythe coolers - Orochi has got more competition as the two mentioned coolers also perform very good - also in semi-passive mode.

If you have a good airflow inside your case the Orochi itself could be used in passive mode with your X3. But I still have doubts that it'll work w/o any fans in case or on Orochi. But that's only my opinion. The best way would be to test if it can work in your setup.

Or you wait for further answers from Scythe staff - they cooled a Phenom II X4 passively with Orochi on CeBIT 2009 (http://www.scythe-eu.com/en/events/c...-hannover.html).

I found some reviews: in one it was advised to use the Orochi with pure passive mode only up to a maximum of 90W TDP and another review mentioned that 65W was the max for this mode (and that this was formally the max given by the manufacturer although i couldn't find anything about it in the specs; perhaps an additional info given to the reviewers). E.g. http://xtreview.com/addcomment-id-42...benchmark.html - don't know what to make out of these figures.

[scyth]

I checked that Dimension link, says its 20cm width... 20cm is my case too, so I guess it doesnt fit

So now I m thinking about scythe mugen 2... is it a good choise?

WHICH of these two(orochi and mugen 2) are more noiseless WITHOUT fan?

[Oli]

Mugen 2 is a high performance cooler. Although designed primarily for use WITH fan it performs surprisingly good w/o one - better than Mugen 1 if you trust the reviews. You will need a decent airflow for both coolers if you want to run the coolers themselves fanless.

Still the Orochi seems to be (much?!) more suitable due to the wider distance between the aluminium fins of the cooler and the whole design that was made for low airflow. It is some kind of old rule (but i don't know where to find the real proof) that coolers with wider distances between the fins achieve better results with less airflow while coolers like Mugen 2 with smaller gaps need more pressure of airflow.

No fans = no noise but i cannot help you any further in setting up a system without any (!) fan. I could imagine such systems but none would be based on a triple core AMD with 95W.

You can check this German review of Orochi and Mugen 2 - Google translation isn't the best but probably the figures will help. Orochi performs much better than Mugen 2 with case fan @ 840 rpm nd 510 rpm in their test setup:
Google Übersetzer

Concerning dimension: perhaps it is a misinterpretation of the dimensions thread - Orochi is 155mm high and your case's width is 20cm. So Orochi should fit easily in this direction even if you add the distance for mainboard and cpu socket (height of Orochi resembles with width of your case). Much more interesting would be if Orochi hits other components like the PSU.

[scyth]

Well my friend,
I do believe that I can work a fanless heatsink in the Winter.
In the previous Winter I had no case fans and the factory heatsink in an AMD X2 4400, with cpu fan adjusted in low rpm... and there was no problem.
My point is that IF this Orochi animal cannot satisfy me without fan, then why buy it and fill my whole case with it?
So I ll buy the Mugen 2 and theres one more question, is it better to REPLACE its fan with this one(Fan 12cm Scythe Blue Led)?
ImageShack

[Oli]

If your mainboard has a 4-pin PWM connector for the CPU fan i wouldn't replace it. The Slipstream fan used on Mugen 2 is excellent and particularly silent when running with low rpm - great combination with PWM speed regulation.

But if you use any kind of fan control, 3-pin voltage regulation or whatever you could use any other fan as a replacement - or if you just like the blue LED.

The Kama PWM Blue (this should be the one you referred to: Scythe EU GmbH : Kama PWM Blue LED - LED light plus PWM) is also a good fan but i prefer the Slipstream series beacuse of good experiences.

I personally believe that Slipstream PWM plus Mugen 2 is a very strong and competetive package.

Kama, S-Flex and Slipstream are very good fans - so it is some kind of question of your personal taste.

[Shinigami]

Hi guys!

I would join your conversation here on Orochi, Mugen 2 and the fans. Basically, i would udnerline the statement from Oli. I bellieve Blue LED case fan is not really a chocie that will satisfying your requierements. Slip Stream 120 is already one of the gead and cheap fans, but with the PWm function it is really nice and can be controlled from windows (OS) by speedfan to make it exactly how you want it.

As an exchange I would go for S-FLEX 800 or if you want to controle the speed, go for S-FLEX G, that one has a spinup voltage of 3V and spins with only 200rpm =D

You know, it is recommended to go (completel) fanless to max 70W TDP, if you have a decent airflow, then higher could work, but that is more of an individual thing. People sometimes think that completly shutting the pc and make things work fanless is how it works, but this is totally not how it should be.

Bottom line is that if you seek to make your pc very silent, then Orochi is a better choice, but you have to make your airflow isnide the pc case work properly.

[scyth]

I cant find the S-FLEX G in my country but I found the S-FLEX S-FDB.
Says that is 8.7dB and has a 4-pin adapter.





Do u suggest me to buy it and put it on the Mugen 2?