p870tm 2nd CPU fan port!

Impressive work as always brother! Looking forward to refinement of this mod.
As for the direct mounting, cutting a small channel might be the best way to go, might want to put some kapton tape on the capacitors so that nothing accidentally bridges when pressure is applied.

 

btw, for the 5v cpu fan port, do you know the current limit of it? something similar to this table which i had no idea where you'd begin to find it.

 

For the P8 board?

 

no not the schematic, but the chip that regulates current going through it. honestly im not sure if the 5v fan port has a control like the 12v cpu fan, shown in this picture he found online:

http://forum.notebookreview.com/attachments/12v-png.155613/

it shows on that table 0.7A is the max before protection triggers and throttle the current to 12V CPU fan port, which I managed to do with 2 fans with power splitter and FN+1. while at 100% fan control (~80% with fn+1, it doesnt trigger it).

 

I would not look to bypass that protection.

 

not the protection. I have other use for 5v if I can draw current from it to power other internal devices like tiny fans to fit else where or mini usb dongle. knowing the current limit will help me know what sort of device i can purchase.

 

From what I can see on schematic attached by @jc_denton second fan is supplied directly from one of 5V rails, which is used also for keyboard backlight. I'm not sure how much power draws keyboard, but according to schematic of TM mainbord this rail is able to supply up to 6 amps, which is way more than any fan this size could ever need.

 

Tiny fans?

 

aside from the keyboard, are there other 5v devices on the same rail?

yea tiny fans like 2506 or 3007 etc. great for cooling optane SSD if I needed.

 

I love reading on your mods brother @ole!!! , makes me feel a little mad scientist about my own.

 

naw man i onlyh know how to mod and add things if everything is there and ready such as power/data line. with the situation out there right now tho i will be doing mod beause of more time

 

Only other fans, but only when 5V fans are used. As far as I know, all P870 models except DM and DM2 have 12V fans.

 

I'd you have enough of them given the bandwidth limitations of the chipset you wont need to.

 

some additional devices are sata those low 400-500MB/s ones and its not like i can fit many.

thats pretty crazy. assuming thats not changed, theres a lot of current available through just a tiny port, im worried if my mini jst cable can withstand so much current going through it. gonna use it to power a 3.3v m.2 device with converter and a few 5v USBs.

 

You could run some calculations based on the connectors to make sure it does not burn down

 

Did anyone ever figure out what fan Clevo initially had planned on using for the TM1?

 

Same, except add in breaking components and good amount of yelling out profanities.

 

I gave my car the clean and polish it has needed for a while lol.

 

Next project, cleaning the fans and finstacks in your Clevo

 

I was wondering if we can connect a 140mm slim fan there and install it all over the heatsinks, would there be an improvement?, I have a pair of Prolimatech Ultra Sleek Vortex which are nearly silent at 100% and they're only 15mm thick.

I have this adapter which came with a Prolimatech MK-26, to connect regular (3/4 pin) fans to GPU board pinout fans.

 

I really doubt that there is enough space for that internally and having the back cover on as well. Unless, you add spacers and can live with gaps around the system.
Not to mention depending on where you position the fan, EMI might do a number on some components.

 

Lol, not very difficult on these guys to be fair.

 

Which is a good thing, only the CPU heatsink can be a dread, if you want to get gunk out from the rad. Since that requires removing the tape that holds fan and the heatsink together.

 

I just found out that it doesn't fit lol

 

You can fit a ~60mm fan on the TM1 heatsink, as long as it's 5-8mm in height. Anything above that requires modding the back cover depending in where you place the fan.

 

Yeah, bot the connector and the fan doesn't fit. I'll try to scavenge a fan from an old laptop.

 

It's a 4pin 5v, but it needs to be rewired, since the board uses a non standart pinout.

 

You might even fit a larger fan, but it requires cutting off some of the metal mounting brackets on the heatsink, which might not be for all.

 

Possible to use the port for cooling the GPU? And can some send me an example which fan will fit on the GPU heatsink? thx

 

What's your current heatsink? The best upgrade is the vapor chamber and that usually does not need help if setup properly.

 

Sry for the late response, got the single gpu heatsink like on this pic. Is there an example of the upgrade for the vapor chamber?

 

I think you copied the wrong link.

 

this one sry, any ideas for an 3th gpu fan on the 4th port?

 

What are you trying to put where exactly? There is no more heatsink space for another GPU fan.

 

Not for the GPU. More for the VRMs/Cpu.

http://forum.notebookreview.com/thr...lounge-phoenix-5.826848/page-93#post-11062595

http://forum.notebookreview.com/thr...lounge-phoenix-5.826848/page-93#post-11062953

 

Just be mindful that you should only use +5v and grnd and leave the other two wires unpopulated.

 

Maybe a dropper resistor to slow it s bit?

 

from memory that rail is 5v and 1amp, so it'll put some life in that little fan.

 

Has anyone again found a current fan on Ebay or elsewhere? Most links in the thread are no longer active!
Thanks!

 

http://forum.notebookreview.com/thr...lounge-phoenix-5.826848/page-93#post-11062953

 

I now also have the fan.
I have looked at the cables. Apparently, assignment is already correct. You can theoretically connect the fan without regard to the rest of the connections.
Probably PWM and SENS signal is also the same as in the wiring diagram of the P870TM!

 

Do not populate pin 2 and pin 3, as there have been reports of motherboards short-circuiting by doing so. Which is why I only recommend using pin 1 and pin 4.
http://forum.notebookreview.com/thr...ounge-phoenix-4.809589/page-291#post-10859199

Pinout:
PIN 1 is 5V PWR
PIN 2 EC (TACH)
PIN 3 BUS SWITCH
PIN 4 GROUND

 

Thank you, I already knew that! I meant only the cables from the fan itself. But it does not really matter, I also operate the fan only with 5V plus and ground! Works fine .....

 

Ah great I just made it a habit of mentioning it every time it comes up, since a 400$ replacement mobo is not so nice.

 

so curious on the power needed for a i9 9900k stock , with a gtx 1080 on the p870tm1-g?? will a 330w work fine or should i do a dual or a 780w , and any pointers for the intel raid set up each time i try i get a kernal error , no matter how i load windows or any os , if i got non raid ahci all good .... but my gtx 1080 is running avg temps of 87-90c

 

Yes, a single 330W brick should be fine. I still use a single 330w at 5.1Ghz and powermodded 1080 without issues.

 

I'd avoid any power viruses though.

 

So 9900k +rtx 2080 should also be fine?

BTW, how do you guys attach the second fan? Just capton tape/scotch?

Sent from my S60 using Tapatalk

 

It should be alright, the 2080 has a lower TDP than the 1080 afaik. I did some testing with a wattmeter and the 330w brick scales well above and has held up fine so long. As for the 2nd fan, you can either make mounting for it, there are 3 screw holes or just duct tape it in place. I'd also put a small thermalpad between where it sits to reduce vibration noise.

 

Perhaps, I've only tested my personal usage, which is benching and gaming, so that's something to keep in mind.