NO, your use of "sync" is throwing me off. And I'm not mocking you, only speaking from experience. I've NEVER seen a heatsink made of anything but a SOLID chunk of material. But certainly I've seen heatsinks that have copper parts as well (which is what I'm think when you talk about "solder"). And I've never seen a heatsink that used any type of "gases" in its construction. Does that mean they don't exist? How would any non-solid transfer heat? Besides liquid cooling, which is what I thought about when you spoke of "2 pipes", thinking liquid pipes? Guess not.
Anyways, so I did read the post again, you said "These PC's are brand new and the Heat Synch is bad, it causes a roaring sound like a vacuum cleaner".
Fair enough, but I've never seen a heatsink make noise. Fans, yes, CD-ROMs, yes, Hard drives yes, but a heatsink?
You said the fan blows faster when the temps go up, yes, makes sense. This can cause a louder sound.
But frankly I'm more curious of just what the heck kind of heatsink/fan came in these PCs you're talking about. No serious, no mocking, no funny business, I'd really like to know. What socket? What type of processor? What is liquid cooling (as per your "radiator" description)?
Oh, and I'm not impressed with cert *****s either. You need at least 500 posts before I'll consider you knowledgeable in the force
(I hope you know I'm kidding, good grief)