EXTREME Overclocking
Home | Reviews | EOC Forums | File Downloads | RealTime Pricing Engine | Free Magazines | Folding Stats Contact Us

Get More Out Of Your Thermaltake Fan

Date Written: February 5, 2002
Written By: Jason Rabel
Company: Thermaltake


Get More Cooling For Free (Again)!:

After posting the Volcano 7 Fan Tip, people started writing about if it was possible to wire up a switch to the fan sensor to go between the sensor control and full speed. In theory it sounded possible, so I decided to try it out on my Volcano 7 fan to see if I could wire in a switch.

The temp probe is a fairly simple device that controls the fan speed. As the temperature increases around the probe (gets hotter) the resistance through the probe decreases, which tells the fan to spin faster. When it gets colder, the resistance increases through the probe which tells the fan to slow down. I clipped off the probe from the fan and connected it to my Ohm meter to see what kind of resistance I would get. Sticking it in the freezer for a few seconds maxed out the resistance around 8-10k Ohms. Actually clipping off the probe also let me know how the fan operated in relation to resistance, some sensors react the opposite way as I described above.

For those of you who don't know the Thermaltake fan spec's, here they are:

  • 2900RPM @ 25C (77F) / 46CFM

  • 5000RPM @ 35C (95F) / 53CFM

The first step was to take the fan off the heatsink, and when you flip it over you can separate out the power wires from the probe wires. For this mod all you really need is some spare insulated wire (the smaller the better), a soldering iron, and at minimum a SPDT switch. The mini switch below that I had laying around is actually a DPDT, but it doesn't really matter because we are only going to be using one side.


Since I clipped off the probe to check the Ohms, I decided it would be easiest to mount it near the switch just for simplicity's sake. Though later I realized this wasn't the best way to do it, but I will explain after I go through the necessary steps.

First you want to solder a long wire to the middle of your switch, this is the common line that will lead back to one end of the temp wires on the fan (that the probe used to be attached to). I like to use heat-shrink tubing to prevent any shorts, though it is not necessary if you are careful, perhaps electrical tape could serve the same function.

Anyhow, now that we have the center wire connected, depending on which way we flip the switch will depend on whether it runs through the top or bottom connector. So on one end I soldered in the temp probe, and on the opposite end just another regular wire. The opposite ends of both of these wires you want to solder together and connect to the other temp wire on the fan. This will complete the circuit and now depending on which way you flip the switch will depend on if the current runs through the sensor or just straight through for max RPMs...

However, if you notice far right picture above, we have a slight problem. The solder points are right at the edge of the fan and are too thick to get everything flush! ACK!


Go On To Page 2 For Plan B -->



Most Downloaded Files
Recently Added Files
Compare Prices On Top Brands!

Intel Processors
Core i7 - Haswell
i7-4770K  i7-4771  i7-4790  i7-4770  i7-4790S  i7-4770S

Core i5 - Haswell
i5-4670K  i5-4690  i5-4690S  i5-4590S  i5-4570  i5-4460  i5-4590  i5-4440S  i5-4430  i5-4440

Core i3 - Haswell
i3-4340  i3-4370  i3-4350  i3-4360  i3-4330  i3-4130T  i3-4160  i3-4130  i3-4150

AMD Processors
Vishera 8-Core AM3+
FX-9590  FX-9370  FX-8370  FX-8370E  FX-8350  FX-8320  FX-8320E

Vishera 6-Core AM3+
FX-6350  FX-6300

Kaveri 4-Core FM2+
A10-7850K  A10-7800  A10-7700K  A8-7600

Video Cards
nVidia GeForce GTX 900 Series
GTX 980  GTX 970  GTX 960

nVidia GeForce GTX 700 Series
GTX 780  GTX 760  GTX 750

AMD Radeon R9 Series
290X  290  285  280X  280  270X  270

AMD Radeon R7 Series
265  260X  250X  250  240

Search By Brand
ASUS  Diamond  eVGA  Gigabyte  MSI  PowerColor  PNY  Sapphire  Visiontek  XFX  Zotac

PC Memory

ASUS  ASRock  Biostar  ECS  eVGA  Foxconn  Gigabyte  Intel  MSI  Shuttle  Supermicro  Tyan 

Hard Drives & SSDs
Corsair  Crucial  Fujitsu  HGST  Intel  OCZ  Samsung  Sandisk  Seagate  Western Digital

  Technology Magazines FREE to Qualified Professionals.
eWeek MagazineeWeek is the essential technology information source for builders of e-business. Focuses on e-commerce, communications and Internet-based architecture. Oracle MagazineOracle Magazine contains technology-strategy articles, sample code, tips, Oracle and partner news, how-to articles for developers and DBAs, and more. Dr. Dobb's JournalDr. Dobb's Journal enables programmers to write the most efficient and sophisticated programs and help in daily programming quandaries. InformationWeekInformationWeek is the only newsweekly you'll need to stay on top of the latest developments in information technology.
  Other Popular Titles: PC Magazine, BusinessWeek, Baseline, Business Solutions, Software Magazine, InfoStor, Security Source , TelevisionWeek, more...
Copyright 2000-2015 EXTREME Overclocking. All rights reserved.
Disclaimer of Liability - Privacy Policy