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Windows 7: Laptop Cooler With 250W PSU - Enough Power?

06 Apr 2012   #1
suspect008

Windows 7 Ultimate x64
 
 
Laptop Cooler With 250W PSU - Enough Power?

Hi evryone,
First of all I'm sorry if I have posted here in wrong section about this. I think this is about hardware, so here what I expect to know.

I'm thinking of making my own laptop cooler for my notebook because of these HP G6 gets way too hot while gaming and doing some intensive works( Once recorded CPU temp of 100C while playing Crysis)

Before I make this decision, I have tested couple of my friends' coolers but I only got a drop of 10C-15C only with high end coolers for about 45$ which is not enough. about those cheap ones, I dont have to tell you guys . I know there's some awsome coolers for about 80$ but why spend that much if I can make a more powerful one way less than that.(in my case, I already have a PSU and 4 fans which I have saved from old PCs)

Here is my design,
Laptop Cooler With 250W PSU - Enough Power?-06042012194.jpg

I intend to use four 120mm fans in the middle and two 80mm fans in the back for proper ventilation as shown in the pic.
My problems arise with my PSU which is a 250W ATX one I have took from a old PIII machine and it only has 3 molex connectors. but also those are devided into that small 4 pin connectors which we used to power up floppy drive. here are pictures of those connectors and the label on it.

Laptop Cooler With 250W PSU - Enough Power?-06042012195.jpg
Laptop Cooler With 250W PSU - Enough Power?-06042012196.jpg

And here are my doubts regarding this and I hope you guys will help me.

1) I'm going to use 3 molex Y splitters to devide these 3 into 6 connectors. If I do so, Would this PSU provide enough power for those 6 fans without overloading? (2 fans per 1 main molex which splitted with a Y splitter)

2) Can't I remove those small connectors which are splitted from the main molex and If I connect those bare wires to a fan, would it provide sufficient power for that fan without overloading?

3) Here's another thing that one of my friend came up, he doubt that the Electro Magnetic Field generated by the PSU will effect on my Notebook as I have placed it near( just 6cm distance from the right edge of the notebook and below the level of it as you can see in the pic). Would this be something I should highly consider?

Thank you all. any suggestions would be much appreciated as I'm not having much knowledge on this field. thank you again for reading this kinda essay and I appreciate you very much




My System SpecsSystem Spec
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06 Apr 2012   #2
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

In my opinion your PSU will have zero issues running 12 fans much less 6. I would consider speed controlling so you can turn them down when low loads and up to max if need when gaming. Regarding the electromagnetic field it's a question you can answer but just pluging in a couple of fans and setting the laptop on it or near it and see if you get an adverse reaction which I doubt. Good luck with this and take pictures to post of your beast cooler.
I would suggest a gasket around the bottom to help seal and force the air into the laptop. You could purchase some sticky back rubber gasket and then place it around to lift the laptop off the surface and seal it to the air flow. Next would be the custom dry ice chamber for mad scientist sessions !
My System SpecsSystem Spec
06 Apr 2012   #3
suspect008

Windows 7 Ultimate x64
 
 

thank you linnemeyerhere, that saved me loadz of tension. I'm a kind of architect student and love to build things I need.

I have thought of that sealing the air before. but guess Im gonna need more opinions.
Here is why I decided to leave some openings around that base stand. I have opened and looked inside my notebook and saw that theres these vents at the bottom will only(I mean freely) leave space to reach air to the hard drive, wifi card and ram chips. theres not much space to go inside to reach for the GPU or CPU. So I thought that If I sealed up the base stand and around the sitting area of the notebook, the hot air will circle around the bottom with no place to exhaust. and with the every cooler, I saw that even though there were 2 or 3 fans, they were suffering from not having much air to blow to the bottom because of not having enough space from sides and elevation from rear.

and here I got lazy with my drawing. the base is made to be inclined as rear has a elevation of 18degrees. I found that 18 to be more comfortable to me with stand will raise it up to 12cm while I spend most of time on bed

and so I focused more on cooling the notebook casing rather than going inside(for hard drive, wifi card and for ram chips, I have aimed two 120mm fans and those are thicker fans with less blades than normal which will blow air with more pressure and for the case I used regular 120mm which has more blades in order to blow more volume of air)

and I used those back 80mms because of the fact that I mentioned that hot air will circle around the bottom and those 80s will blow more cool air into the base and also in order to remove hot air rapidly. thats why I decided on leave openings. so what do you guys think of it? should I seal it or not?

And linnemeyerhere, of course this is just the basic design. it will have controller for each fan for speed and power. and these middle fans are placed on a tray which I can easily pull out, on top of the psu will be used as a mouse pad and otherwise for a doccument holder. I left 22cm(A4 size) width on that purpose and top will be made with a aluminium plate for better heat conducting and more than that, I love the finishing that I have on my mind with nice blue fabric like those teddybears are made
My System SpecsSystem Spec
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06 Apr 2012   #4
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

Understand that most lappys draw cool air from the bottom and exhaust out the side. It's worth checking if your does the same. If so then sealing the bottom around the fans would be the bomb. Forcing cool air into the laptop and all it's openings will not imped cooling but enhance it. Laptops aren't sealed inside so the cool air will migrate under pressure. You can experiment both was but I'll but money on the sealed system dropping temps. I would also open the laptop up and clean it but when you look at it's fan's location and the air channels then you'll have a better idea as to whats going on inside.
My System SpecsSystem Spec
06 Apr 2012   #5
suspect008

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by linnemeyerhere View Post
Understand that most lappys draw cool air from the bottom and exhaust out the side. It's worth checking if your does the same. If so then sealing the bottom around the fans would be the bomb. Forcing cool air into the laptop and all it's openings will not imped cooling but enhance it. Laptops aren't sealed inside so the cool air will migrate under pressure. You can experiment both was but I'll but money on the sealed system dropping temps. I would also open the laptop up and clean it but when you look at it's fan's location and the air channels then you'll have a better idea as to whats going on inside.

yep, its a pavillion g6, takes air from the bottom and exhaust from the left top side with a exhaust fan. what do you meant by sealing? before I got it as sealing the sitting deck of the laptop and also sealing around the base stand where fans are placed. now I think you only meant about the sitting deck. is that so? if so, that means I should leave some openings like I have in my pics to get cool air? thanks again for quick replying linnemeyerhere. really appreciate it.
My System SpecsSystem Spec
06 Apr 2012   #6
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

My thought is to seal the air from your fans under the laptop and pressurize them with a soft rubber seal going around the entire outside edge of the laptop. This will provide a level and stable base to the base and also give it a somewhat air tight seal. With that then you are in effect creating a push/pull system of air delivery. The internal fan now being supplemented by the multiple fans underneath, as well any other opening or vent underneath will benefit by the cool pressurized air flow and with the gaps inside the laptop the air will migrate to the exhaust as well.
My System SpecsSystem Spec
06 Apr 2012   #7
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

Hopefully you don't create a hoover craft effect and levitate the laptop with all that air flow ! lol
My System SpecsSystem Spec
06 Apr 2012   #8
suspect008

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by linnemeyerhere View Post
Hopefully you don't create a hoover craft effect and levitate the laptop with all that air flow ! lol

hahaha LoL fortunately it is heavy as 2.3kg Thank you linnemeyerhere. I got what you said now. I will work on that. thank you again.

and wow! you've got an awsome rig man. especially those g. skill 2133s and 10 case fans wouldn't those make annoying noise?
My System SpecsSystem Spec
06 Apr 2012   #9
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

What timing, I just unboxed 4 more fans as we blog. I use only Noctua fans as they are the only fans that are dead silent at 12volts. I had used 2 of the Corsairs as pull fans on my H100 radiator but I hate them as even speed controlled I can still hear them. So out they go and in go 2 new focused flow units and then later when I can get my 800D case then I will run the extra's. Oh my if I count every fan including the PSU's I've got 16 spinning !
My System SpecsSystem Spec
06 Apr 2012   #10
suspect008

Windows 7 Ultimate x64
 
 

I have heard that noctuas' are silent. but never thought of that it would be this much silent. Actually I never knew cuz I have never used them. I have 4 antec case fans(incl. top 140mm) and coolmaster for the proc on my desktop. now as you've confirmed it, I will definitly go for noctua on my next biult. But it will take some time with all my work here and for a while I will be stick on my notebook. but I can wait
oh and bout the cooling, you're the man linnemeyerhere
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