OK..... Here's how I built my cooling system. (long)

[NavyDood_ F/A18_Mech]

Bear with me. I wrote this up, so when i put my webpage together it sounds good. [img]/forum/smile.gif[/img]Here’s the scoop. I may have gone a little overboard, but hey it works great.

List of items:
4” 65cfm fan from Radio Shack (120 volt)
3” 32cfm fan from Radio Shack (120 volt)
On off switch
Wire
Connector and power cord from an old powersupply. (Or the equivalent)
Inline fuse holders.
2 pin Inline connectors

Mind you. I had the whole case torn apart during these mods. It was in 6 different pieces. Had to Re-Rivet it back together where needed. [img]/forum/smile.gif[/img]

I’m running a Celeron 366 Slot1. Costa Rica built. I have a 3-fan heavy-duty heatsink (4500CT) from Net-N-Dude. http://www.net-n-dude.com/

I started by mounting the 4” fan to the front of the case inside pulling the air in. I laid out and drilled 540 holes in the front plastic cover ¼” apart. Hole diameter was 3/16. This way I made sure that the fan could pull the air it was intended to. You know that whole A = Pie x D stuff. :-)

Next I measured out on the Top Case Cover where the center of the Processor and heatsink are. Took a 3" hole saw and cut a hole. Then mounted the 3” 32cfm fan above the processor/heatsink pulling that air out through the 3" hole I cut in the top of the case. With a fan shield too.

When wiring these 2 fans up, I used inline connectors to remove them if needed. Not a necessity, but a nice feature. I also used inline fuse holders with .5 amp fuses for added protection. All this connected to an on/off switch mounted to the front of the case. I used a power cord connector and power cord from an old powersupply to supply the 120 volts. (Anything like this setup would work though.) I hard mounted the power connector to the back of the case.

Then I figured out how much area I needed for the expelled air. You always want more exhaust area than intake in this case. So I drilled more holes in the back. I already had holes in the side cover from the company that made the ATX case. I then figured out the area for all the holes and got what I wanted.
13.73” Available area in
12.56” 4” fan area in
19.43” Available area out, maybe a tad less. This is considering the 3” fan on the powersupply.

And last but not least. I have a 12vdc fan blowing directly on the bottom of my H.D. And the 3” fan in the power supply pulling air out also. I'm running 458 MHz with out a glitch. (Can’t get 550 with my Slot1 Celeron.) With the case cover on, inside ambient temp of my house at 78-80^F, the cooling system off, my processor runs around 41^C. Turn the cooling system on and it runs around 34^C.

Jim

[[dannzig]]

hi jim.... isn´t this like shooting
rabbits wih a bazooka?

do you really need this?

and by the way... doesn´t this
system make alot of noice...

from the way you describe it i
kinda think so....

[img]/forum/smile.gif[/img]

/dann

[RobRich]

Make a lot of noise? Probably sounds like a plane taking off, if it's anything like my setup. My system will almost vibrate the desk if its not securely in place. Here's my cooling system:

-Standard AT style case
-Closed case system with two large openings covered with square 6x9 speaker grills
-Two 4'' case fans intaking air
-Two Gamma 2800's circulating and directing the air
-Two oversized super7 fans on large cpu heatsink
-Two 486 fans directly on video card heatsink
-Power supply fan set to outake
-Several exhaust ports

Even though I don't seriuously o/c my system, this keeps it running extremely cool, usually a few degrees over room temp for the case. I also have to run a second 12v power supply to power the extra cooling, only the cpu fans are on my system supply. The sound is a definite problem, but I guess there's a trade off for everything.

[wee96]

Seems like alot of wasted time to only get the 366 to 458. Cheers though, takes alot of skill to do what youve done [img]/forum/smile.gif[/img]

[flagreen]

I'm using the same 4" radio shack 110V fan to blow into my full tower. I wired it by splicing into the power supply lead-ins inside the power supply itself. Then I ran these wires outside of the power supply. The black leads directly to the fan. The white I ran to a 30amp 12V auto relay (radio shack #275-226) and then onto the fan. Last I connected 12V + and - leads from an unused disk drive connecter coming out of the power supply to the on / off terminals on the relay. Now when I power up my system the relay makes contact and the fan turns on. I watched it carefully for the first few days to make sure the relay didn't overheat which it didn't. Works good.

[NavyDood_ F/A18_Mech]

Yeah maybe i went over kill a little.....
But hey. I like tinkering with stuff like this. And if I ever decide to switch to a PPGA chip to get a faster speed, well I have the cooling already to go. [img]/forum/smile.gif[/img] Heck, I'm already planning my next revision to the cooling. [img]/forum/smile.gif[/img] And this isn't the only thing I do. I'm just as bad with my 96 Camaro Z28 and My 84 Toyota 4x4.

Jim

[NavyDood_ F/A18_Mech]

LOL Yeah it makes a little more noise. But it's really not that bad. The 4" 120 volt fan is no louder than my 3-fan setup on the processor. The 3" 120 volt fan is the loudest of them all. If I'm playing a game i don't notice it though. The game sounds drown it out. And, it is sitting on my desktop right next to me within reaching distance. [img]/forum/smile.gif[/img]

Jim

[gER0NIMo]

you guys are muffu-in psycho. i got a globalwin fab28, a video card cooler and a case fan with a piggyback 50mm fan. and my system runs at 28C idle and 36C with intense graphics and processor demand :P
psycho...

[Exacerbateman]

While we are on the topic of fans, Big fans are the answer, Sick of stuffing aroung with litle fans moving 5cfm etc etc..

Got my new 120mm 80 cfm at 3000rpf fan today and kicks ***! Shifts a huge amount of air and sounds like an electric whipper snipper. Anyway to reduce the noice a little?Exacerbteman

[scfarley]

I too, did the hole saw trick except I did it to the side of my case. The 4" fan I installed blows directly at the cpu, Matrox g20016mb video and the end of the hard drive. Try using a length of 4"flex dryer ductwork over the hole for the fan. It seemed to make a difference in mine.....
I use a 4" fan in the side, alpha cpu cooler, I mounted two heatsinks that I had lying around to the top of my Maxtor 7200 rpm ata66 hard drive with some of the leftover heatsink paste that came with the alpha, took out the lower 3.5" cover which is directly above the hard drive to let some of the air pushed in by the fan in the side to blow across the heatsinks that are on the hard drive. I don't have a thermister mounted on the hard drive, but there is a very noticable difference in the temp. of the top of the hard drive. (it used to run pretty warm) I also removed one of the blank covers that is below the agp video to let air come across the heatsink on the card; ain't it fun to experiment???

[JRWashburn]

Hey guys cant you get some real long cables ,run them under the carpet up the wall and mount the computer in the freezer? (-:
By the way how do you get the little smiley face on the post?
thanks. (a little humor does`nt hurt anyone sorry).

[RobRich]

Don't tempt me about the freezer. If I could find a dehumidifier small enough to fit into mine, I would try it. At any rate I do actually achieve something with my cooling, I've got my regular CL TNT-2 at 160/190. Not to bad for a no-Ultra, but without the cooling, it will scorch you. As for the smiley face just type : ) without the space. Other combinations work too, [img]/forum/wink.gif[/img]

[This message has been edited by RobRich (edited 09-20-99).]

[This message has been edited by RobRich (edited 09-22-99).]

[socalgal]

JRWashburn - to learn UBB Code www.sysopt.com/forum/ubbcode.html

The UBB Code link is under the Submit Reply button on the page you get when you hit 'Post New Topic' or 'Post Reply'.

[img]/forum/smile.gif[/img]

[This message has been edited by socalgal (edited 09-20-99).]

[pickel]

Hey Navy Dude,
I just started fooling around
with my computer. Half the time I have no idea what ya'll are talking about, but I'm learning .Took my k6-2 300 to 350 and it really is a noticable difference. I posted a message about CPU cooling software. Are you familiar with it? I was an F9-J plane captain about 30 or so years ago at NAS Oceana after
2yrs on the Independance. Loved the Med cruise . If you any good sites where I could
download "RAIN" sure would apprecite it!

The Pickel