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 Post subject: slk-800 users etc lookie
PostPosted: Sat Jun 07, 2003 12:57 pm 
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http://forums.theoverclockingstore.co.u ... adid=46471
scared ya ;)
:twisted:

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 Post subject:
PostPosted: Sat Jun 07, 2003 1:07 pm 
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:shock: I thought it was supposed o be welded to teh base.....


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 Post subject:
PostPosted: Sat Jun 07, 2003 1:11 pm 
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Yet another reason to purchase an Alpha or Swiftech. :lol:

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 Post subject: It's soldered!
PostPosted: Sat Jun 07, 2003 1:41 pm 
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Hello:

DryFire wrote:
I thought it was supposed o be welded to teh base.....


This is a common misunderstanding -- the fins are soldered on, which uses melted solder (mainly tin & lead). Welding is much hotter and would be melting a portion of the metal of the base and the fins. I don't think that it is possible to weld copper; only metals like steel, iron and aluminum can be welded (and maybe others like titanium) but not copper, AFAIK.

I'm a bit happier that I've got some Alpha's coming Monday... This guy must have been really pushing the temps up pretty darn high -- with a 900mHz overclock and gawd knows how high he had to push the voltage! :roll:

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 Post subject:
PostPosted: Sat Jun 07, 2003 1:45 pm 
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Location: swindon- england :/
even so...
thermal epoxy would possibly be a stronger joint

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 Post subject:
PostPosted: Sat Jun 07, 2003 2:39 pm 
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pingu666 wrote:
even so...
thermal epoxy would possibly be a stronger joint


Yes, but not as thermally efficient as a copper/copper or copper/aluminum joint or other metal-to-metal joint.

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 Post subject:
PostPosted: Sat Jun 07, 2003 2:56 pm 
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Not a pretty sight.

My view is it is duff manufacture - he had only had it on for less than a day so basically the thing failed on first use. So according to this theory those of us who have survived a couple of days should have a much lower chance of the same failue.

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 Post subject:
PostPosted: Sat Jun 07, 2003 5:39 pm 
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I never knew the 800 was made that way. Its totally different than previous versions.

One more thing - It looks like the solid base has a different color than the copper fins. Is it copper?


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 Post subject: hmm
PostPosted: Sun Jun 08, 2003 3:44 am 
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Posts: 110
be interesting how thermalright handles this. They've been pretty proactive on the CS front regarding motherboard mounting.

Looks like a freak accident.

Regardless, something like this doesn't change my plans on an slk 900 u much like the myraid of RMA brandx motherboard posts on ars or [H] wouldn't sway me from that particular mb.

Cheers!
-Liq


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 Post subject:
PostPosted: Sun Jun 08, 2003 5:50 am 
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I agree with you, Dukla.... no way that the heat generated by the CPU melted the solder. Pure lead melts @ 325c, the solders that I use in my work are closer to 400c. All the plastic in the area would have been long gone before the solder liquified. There was somebody asleep at the thermometer the day this was made! Most of this kind of soldering/brazing is done in batches in a furnace so I'd suspect that there's going to be more than one of these take a dive off the CPU.


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 Post subject:
PostPosted: Sun Jun 08, 2003 4:18 pm 
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Quote:
Yet another reason to purchase an Alpha or Swiftech


there is another reason?


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 Post subject:
PostPosted: Sun Jun 08, 2003 5:00 pm 
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johnoh wrote:
Quote:
Yet another reason to purchase an Alpha or Swiftech


there is another reason?


Performance. Alpha and Swiftech are constantly battling for first place.

Mike's article should be out soon. You'll see.

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 Post subject:
PostPosted: Sun Jun 08, 2003 5:49 pm 
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i thought swiftech was made for high airflow fans.


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 Post subject:
PostPosted: Sun Jun 08, 2003 5:55 pm 
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Quote:
Performance. Alpha and Swiftech are constantly battling for first place.


They're also competing for last place on price. Thermalright is much more reasonably priced.


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 Post subject:
PostPosted: Sun Jun 08, 2003 6:01 pm 
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are there any links to tests where an alpha or swiftech sink beat an slk900 with the same fan on each?


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 Post subject:
PostPosted: Sun Jun 08, 2003 6:11 pm 
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ct991 wrote:
Quote:
Performance. Alpha and Swiftech are constantly battling for first place.


They're also competing for last place on price. Thermalright is much more reasonably priced.


I think not!
Check out the prices at Newegg.
Alpha PAL8942 $29.99
Thermalright SLK-800U $42.99

I think you'll find the prices are roughly the same anywhere you look.
Granted, Swiftech is the most expensive of them all.

I got my Alpha for $25 from casecooler.com but they don't carry it anymore.

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 Post subject:
PostPosted: Sun Jun 08, 2003 7:05 pm 
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sk-7 $20

http://svc.com/thersk7socco.html


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 Post subject:
PostPosted: Mon Jun 09, 2003 1:45 am 
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johnoh wrote:
are there any links to tests where an alpha or swiftech sink beat an slk900 with the same fan on each?
Not AFAIK, but vice versa (Thermalright beating Swiftech with the same 5600rpm Vantec) is at Overclockers.com.

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 Post subject:
PostPosted: Tue Jun 10, 2003 10:33 am 
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Location: swindon- england :/
they all good... :)

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 Post subject:
PostPosted: Wed Jun 11, 2003 9:39 am 
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If you read the rest of that post now, Thermalright is replacing the CPU and sink including shipping. They want to look at his sink to see how it happened.

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 Post subject: Cold joint
PostPosted: Wed Jun 11, 2003 4:33 pm 
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Simple really. The solder that holds it together wasn't hot enough, it's called a cold joint and is one of the major reasons for "infant mortality".

Electronics fail along a curve that looks a bit like a bathtub, it's called a weibull distribution. Lots of early failures due to manufacturing flaws, then a low steady MTBF for the effective life of the item, then, they start breaking again when they wear out.

I think fans have about 100,000 hour MTBF, heat sinks would tend to be more reliable.

Duracel batteries measure failure rates in PPB (parts per billion) I'm guessing thermaltake doesn't have their processes quite as fine tuned as duracell.


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 Post subject:
PostPosted: Wed Jun 11, 2003 7:05 pm 
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Location: texas
Quote:
Mike's article should be out soon. You'll see.


Does Mike have a heatsink review coming out? I have not heard anything about it.


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 Post subject:
PostPosted: Tue Jun 17, 2003 8:16 am 
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Quote:
Pure lead melts @ 325c, the solders that I use in my work are closer to 400c.


And what processor would still be running above 100C? This smells fishy, not burned. there's an awful lot of solder showing. When was the last time you had a hs that big that you certainly would not be able to touch? Where's the mobo software that monitors temps? It's a server, you take precautions right?

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