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Dynatron ranked incorrectly?

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Old 09-11-04, 03:44 AM Thread Starter   #1
HardwareFreak
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Dynatron ranked incorrectly?


I'm looking thru the Socket A heat sink rankings and notice that a Dynatron copper heatsink is listed with a c/w of 0.40 in the rankings page, but when you read the test article, all the results in the table are in the c/w 0.2x range.



Actually, both of the Dynatrons are listed at c/w 0.40 in the rankings, these two:

Dynatron DY1206BH-L638: 0.40
Dynatron DC1206BM-L638: 0.40


And yet the test data for both of them shows their c/w's in the 0.2x range.

Why is this?

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Old 09-11-04, 06:51 AM   #2
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I see your point...Good observation..

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Quote:
CONCLUSIONS
The tested C/Ws place the Dynatron at the top rank of air cooled heatsinks. For aggressive cooling of Socket A CPUs, the Dynatron is very competitive, but the noise/performance tradeoff is one that each user must confront.

I expect to see more heatsinks delivering C/Ws below 0.25, but mostly with significant noise penalties. Expect to see attempts to use 80 mm (maybe 92mm?) fans as one means to reduce noise, although fan tip speeds will mitigate noise reductions.
SOURCE LINK

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Old 09-11-04, 10:50 AM   #3
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The little Dynatrons with copper bottom or all copper are very good coolers but they don't advertise much or at all and their coolers are inexpensive so maybe that has something to do with it . Any time I've seen a review or comparison including the Dynatron microfin in it , the results were very good .
Link below is the BH-610 cooler I use when I build a rig for someone , I sometimes put a 60mmX25mm 27cfm 34dba fan on the heatsink and it's a great all around cooler .


http://www.newegg.com/app/ViewProduc...114-011&depa=0
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Old 09-11-04, 12:17 PM   #4
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"Dynatron DY1206BH-638"
Joe Citarella - 8/26/01

Since 2001, testing methods have been updated. The initial tests were done on t-bird procssors.

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Old 09-12-04, 04:44 PM Thread Starter   #5
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Quote:
Originally Posted by pwnt by pat
Since 2001, testing methods have been updated. The initial tests were done on t-bird procssors.
You didn't read my post closely enough. The rankings page states 0.40 c/w, but in the review it states 0.23 c/w.

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I never thought I'd see the day, but at 41 I now prefer quiet and cheap to loud, boosted clock, and expensive. Maybe I'll catch the OC bug again one day. If I do I won't screw around. It'll be a dual loop setup with 9x 95w 14.4v TECs -- ~700w @ 12v. I have an old dual chamber Chenbro pedestal server case that can hold 3 triple 120 dual core rads plus 9 fans and dual PSUs internally.
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Old 09-12-04, 08:15 PM   #6
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The tests the heatsink was origionally done with was using a tbird processor. The newer testing methods use a cpu die simulator that I believe is set to 100w. Using the tbird setup, a c/w of .23 isn't that bad, however that's only for that chip in that board with the thermal probe used. I'm sure as the cpu die simulator was finilized, all heatsinks were re-tested so that they are all ranked on fair grounds, not specific hardware.

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Old 09-12-04, 09:21 PM   #7
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The coolness of a heatsink isn't just the thermal resistance, it's also the coolness of the name. All heatsinks with dumb-sounding names ("Speeze" "Dynatron") automatically get downranked by 0.15 C/W.

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