How it's made: heat sinks

I have a 6 inch cube attached to mine.

Water cooling manufacturers have lost the plot, they move the water to a heatsink wtih.... fans! The one I had years ago had a huge water tower which cooled by convection. There's no point in water cooling if you still have fans!

You mean like aluminum foil? They don't look that thin. They seem to stand up to the blade well when it pushes them straight up. More like card stock, which in aluminum, is not all that flexible. The metal used in radiators was very thin. It stood up to a bit of abuse because it was metal. Now they use plastic, which amazed me they could get to work well!

I think you are being a bit disingenuous.

Lol! You are so funny sometimes. You remind me of DLUNU. Unable to even understand what you've read.

You're not right in the head, let me make it simple for you:

This is a typical water cooling arrangement:

So er... what was I read wrong?

Yeah... "How dem do dat?"

Last of the great thinkers. You saw the video. What do you think?

I have a skived copper heat sink, the one I posted a pic of. It got bashed some and some fins got bent. It took some muscle and pliers to straighten them out.

Get one. Blow some air on it and see if the fins bend.

The skived fins on a copper CPU cooler seem to be about 10 to 15 mils thick. Look to be some copper alloy, harder than pure copper. Pure copper and aluminum are both nasty to machine, and the alloys fix that but wreck the thermal and electrical conductivity.

There are data sheets for heat sinks. I suspect they include dimensions. You know, numbers.

Since you know so much about them, why does mine have some copper fins and some aluminium? Surely either one or the other is better? Or is it just to make it look pretty?

Like a car? No point?

I have no idea, which is why I asked, duh.

You wrote nothing to explain the point of the image I just showed you.

Post a picture and we can discuss it.

A car is nothing like a cooling system.

It's not complicated enough to need a picture. It's a CPU heatsink where the fins are aluminium at the bottom, then some copper, then some more aluminium.

"Wreck" is a pejorative term. The thermal conductivity is reduced compared to a heat sink that is very hard to make, and so very expensive. Did the heat sink work as advertised?

What do you think needs to be explained? What do you not understand?

It has all been said in this thread already. Did you miss it? Try starting at the beginning and reading more slowly this time so you don't miss it.

A picture is worth 1,000 words.

I'm surprised they don't skive using a wavy cutter. It seems you could easily add turbulence to the air to get better cooling with bigger fin spacing (fewer fins).

Clifford Heath

I read that the Cray supercomputers were flooded in liquid Freon, pumped through - 100kW of cooling to remove 100kW of heating.

Clifford Heath