Sega Dreamcast Watercooling :O!!!!

mista ting · Nov 26, 2004

Sega Dreamcast Watercooling :O!!!! w/pics

The sega dreamcast has build in water cooling. In the two heat pipes are filled with water then both goes into 1 heatsink at the front with a fan on it there's a thermistor attached to one of the cooling rods to measure the temperature. :drool:

ZachM · Nov 26, 2004

Those are called heatpipes. They use convection to circulate a phase-changing fluid in the pipes. Water cooling uses a pump to circulate a fluid through tubing. The two systems are different. Heat pipes aren't technically water cooling because they usually only assist in the heat transfer.

andyl33t · Nov 26, 2004

that looks wicked. But why would it need a wc system?
wouldnt air be alright for it?

mista ting · Nov 26, 2004

well there's still water in them :burn:

Bios24 · Nov 26, 2004

That is not watercooling, it's simply heatpipes. Just like on the Thermalright heatsinks. It's a good way to move heat energy.

JDXNC · Nov 26, 2004

Neat but my old Pentium 90Mhz laptop had heat pipes too

mista ting · Nov 26, 2004

JDXNC said:
Neat but my old Pentium 90Mhz laptop had heat pipes too

can u post a pic of that plz im curious :clap:

JDXNC · Nov 26, 2004

Sorry but I sold that a LONG time ago!

ZachM · Nov 27, 2004

mista ting said:
well there's still water in them

Not necessarily. There are several fluids used. A good read: http://www.thermacore.com/hpt_faqs.htmp.

Not to bust your bubble, but heatpipes are used a lot in the computer/electronics industry. Most laptops use some sort of heatpipe system to locate the CPU heatsink remotely on the side of the case where it can get fresh air.

Some CPU Coolers that use heatpipes:
Click, click, click, click, click, click, click.

Sentential · Nov 27, 2004

JDXNC said:
Sorry but I sold that a LONG time ago!

Yea thats really not a big issue. Laptops have been using heatpipes for years, hell my PC uses heatpipes.

...and I sure as hell dont have water cooling

slater3333uk · Nov 27, 2004

There aint no water in a computer heat pipe. I guess technicaly you could build one with water in it but it would have operate at much higher tempretures.

knewman · Nov 27, 2004

slater3333uk said:
There aint no water in a computer heat pipe. I guess technicaly you could build one with water in it but it would have operate at much higher tempretures.

That depends on the heat pipe. I have 4 Shuttles (ranging from an AthlonXP to a socket939 3800+ A64) and ALL of them have heat pipes filled with distilled water.

JDXNC · Nov 27, 2004

Sentential said:
Yea thats really not a big issue. Laptops have been using heatpipes for years, hell my PC uses heatpipes.

But the odd thing with the laptop, the heat pipe was soldered to a blcok of copper which sat on the cpu, then the heat pipe just ran around in the laptop a little, it was about a foot long or so, bent to go around things and just ended, it didn't attach to a heatsink or anything. It wasn't a solit bar either cause the ends where soldered closed, so I'm sure it was a heatpipe.

zip22 · Nov 27, 2004

knewman said:
That depends on the heat pipe. I have 4 Shuttles (ranging from an AthlonXP to a socket939 3800+ A64) and ALL of them have heat pipes filled with distilled water.

Really? prove it

Duke3d87 · Nov 27, 2004

http://www.heatpipe.com/heatpipes.htm
its liquid...they dont say whats in it though

man_utd · Nov 27, 2004

If you had all distilled water (not saying that it isn't mixed with water), you would have a fried chip before it started to work.

someoneElse · Nov 28, 2004

Actually, only the first few production runs were heatpipe cooled.

More common by far is the Dreamcast that uses a large metal plate as a heatspreader attached to the SH4 CPU and PowerVR GPU chips with large thermal pads, and replaced the metal 'radiator' assembly with a simple plastic fan that pulled fresh air in over the large heatspreader from holes in the back of the shell.

Although usually quieter, the first heatpipe cooled units actually seem to have more problems with overheating than their less exotic cousins, mostly because of the tiny inefficient radiator on the end of the heatpipe.

I have one of each design myself.

mista ting · Nov 28, 2004

ooooo

IrQ · Nov 28, 2004

someoneElse said:
Actually, only the first few production runs were heatpipe cooled.

More common by far is the Dreamcast that uses a large metal plate as a heatspreader attached to the SH4 CPU and PowerVR GPU chips with large thermal pads, and replaced the metal 'radiator' assembly with a simple plastic fan that pulled fresh air in over the large heatspreader from holes in the back of the shell.

Although usually quieter, the first heatpipe cooled units actually seem to have more problems with overheating than their less exotic cousins, mostly because of the tiny inefficient radiator on the end of the heatpipe.

I have one of each design myself.

Both tend to fry quickly if you remove either. I took the heat pads out of my dreamcast and forgot to put something else in lue of the heat pad. Forgot about it one day and turned on my dreamcast. I got to the starting screen of worms and then saw nothing else ever again.

IrQ · Nov 28, 2004

someoneElse said:
Actually, only the first few production runs were heatpipe cooled.

More common by far is the Dreamcast that uses a large metal plate as a heatspreader attached to the SH4 CPU and PowerVR GPU chips with large thermal pads, and replaced the metal 'radiator' assembly with a simple plastic fan that pulled fresh air in over the large heatspreader from holes in the back of the shell.

Although usually quieter, the first heatpipe cooled units actually seem to have more problems with overheating than their less exotic cousins, mostly because of the tiny inefficient radiator on the end of the heatpipe.

I have one of each design myself.

Sega Dreamcast Watercooling :O!!!!

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