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  Topic Review (Newest First)
05-26-2020 04:43 AM
adversary Ordered Gelid 4-into-1 PWM splitter, two pieces. Hope it is OK quality.

Ordered also some Noctua extensions and Y splitters, in case I need to combine with it. One splitter can be used on Gelid cable, to enable usage of 5 fans.

Noctua Industrial 140mm 3000rpm can now be all used on CPU header (including both CPU fans on cooler, plus same fan behind them on chassins which also blows air directly on cooler).

Ordered also Molex to SATA adapters, all in black color.

This way, mobo won't be stressed about delivering +12V to fans. PWM control remains.

And I think (can't remember exactly) that SATA port have plenty of amperage, so powering fans this way won't be problem I hope. If I'm wrong about anything, please let me know.
05-26-2020 03:11 AM
doyll Looks okay. I think Ryzen 3700 throttles at 85c, so your temp is very close to throttling if not throttling. Meshify S2 is good airflow case and Sigma Pro 140 PWM & Nf-A14 at 1320-1500rpm should be moving plenty of air thorugh case. Wish we knew what air temp entering cooler was.
05-25-2020 01:25 PM
Valka814
Quote: Originally Posted by doyll View Post
Looks good to me. How are temps?
Gona check with lower, fixed rpm case fans. Looks like the airflow in the case is good, the temperature graph is very flat. Room temp is probably around 24-25 celsius.
05-25-2020 08:43 AM
doyll
Quote: Originally Posted by Valka814 View Post
We the additional free time, I'm trying to perfect the paste amount. R7 3700X+ TSP 140
Does it look good?
Looks good to me. How are temps?
05-25-2020 07:56 AM
Valka814 We the additional free time, I'm trying to perfect the paste amount. R7 3700X+ TSP 140
Does it look good?
05-24-2020 11:54 AM
Shenhua
Quote: Originally Posted by doyll View Post
Only one in bottom image is even functional. One in upper image can have leads breaking off by the time cable management is complete.

Try doing a shopping search on Google for "Gelid 4-into-1 PWM splitter" and you should find a good one for 4-6 euro.
Thanks.
05-24-2020 09:49 AM
adversary
Quote: Originally Posted by doyll View Post
You said your fans are rated 0.1a. I'm pretty sure that is rated load, not start-up or impeller stopped load. Startup/stalled load is many times higher. If you've ever read about someone burning up their fan hub / controller / splitter it's almost always at startup, when fans are drawing 3-6 times more power than rated load. Attached chart below has rated and startup load specs for Gentle Typhoon fans made by Nidec Servo. You can see how 2150rpm GT with 0.123amp rating and draws .0530 at startup.

I'm aware of fact the fan consume more amperage on startup. Only way to know for this Noctua Industrial 120mm 2000rpm would be to ask Noctua.

At this moment, I'm still using Nanoxia 1300rpm DC fans (as three top exhaust fans), which are rated 0.16A, as 3X fans connected to one header. For almost four years, without problems. But it doesn't mean that I did not exceed 1A at startup, and maybe I'm risking problem all the time.

Also I now use Noctua 140mm Indistrual 3000rpm on CPU fan header, CPU OPTIONAL header, and Chassis 1 header. These fans are rated I think 0.56A. Again, probably I risk exceeding 1A at startup.

Maybe it would be best to use system where +12V and ground are from PSU, but PWM (and rpm) are connected to motherboard headers. That way there would be no risk, no stress at motherboard, but PWM control would remain same.
05-24-2020 07:17 AM
doyll
Quote: Originally Posted by Shenhua View Post
Where can i buy these for Europe, all im finding it's the cheap hubs.
Only one in bottom image is even functional. One in upper image can have leads breaking off by the time cable management is complete.

Try doing a shopping search on Google for "Gelid 4-into-1 PWM splitter" and you should find a good one for 4-6 euro.
05-24-2020 06:57 AM
JackCY There are dozens of fan splitters on ebay/aliexpress if you don't want to pay the crazy premiums for very little selection on local big PC parts shops.
You can get 4pin splitters, 4pin powered splitters with many different connections be it SATA or molex, be it cables or a small PCB hub.
I like the small PCB hub as it's only PWM and power cable, not a whole nest of mess. But you can get the cable ones if you need extra length, though in normal case that's unlikely an issue.

You just have to dig through the endless listings to find the model with connections you want. There are plenty unpowered ones though they are easy to mod to add a molex or sata power to them.
05-24-2020 05:59 AM
Shenhua
Quote: Originally Posted by doyll View Post
I think so. In below image of original 5-way PSU powered PWM splitter you can see how all leads terminate into connections in plugs/sockets:



Below is newer style with mutliple leads grouped together away from plugs/sockets with single set of leads terminating into plugs/sockets:



Again, this is 5-way PWM splitter, not the 2-way and 3-way you are getting.
Personally I would not use Akasa because of problems I had with them in the past. Too many better ones with better customer support than Akasa gave me when I had problems.

You said your fans are rated 0.1a. I'm pretty sure that is rated load, not start-up or impeller stopped load. Startup/stalled load is many times higher. If you've ever read about someone burning up their fan hub / controller / splitter it's almost always at startup, when fans are drawing 3-6 times more power than rated load. Attached chart below has rated and startup load specs for Gentle Typhoon fans made by Nidec Servo. You can see how 2150rpm GT with 0.123amp rating and draws .0530 at startup.
Where can i buy these for Europe, all im finding it's the cheap hubs.
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