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PostPosted: Mon Jun 16, 2008 8:32 am 
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Hello,

Yes, there are "grooves" on the base, but the surfaces that are there, are pretty flat. Remember: the whole point of this design is to put the heatpipes in direct contact with the CPU -- and the heatpipes are hollow copper. It is probably better that the heatpipes stick up (slightly) above the aluminum backing piece, so they get pressed fully and get good contact.

By lapping this, you might decrease it's effectiveness. Applying the thermal goop takes a different method -- but however you did it, it is working very well indeed.

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PostPosted: Mon Jun 16, 2008 9:45 am 
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I think the best way to apply the TIM is probably in lines on the heatpipes. I put it in a line on the CPU (as Arctic Silver recommend) and it only covered the one heatpipe.


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 Post subject:
PostPosted: Mon Jun 16, 2008 12:12 pm 
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Location: London
but doesnt that end up being too much thermal paste when applying 3 lines?


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PostPosted: Mon Jun 16, 2008 2:00 pm 
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Ash wrote:
but doesnt that end up being too much thermal paste when applying 3 lines?


One line covered one of three heatpipes. So no.


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 Post subject:
PostPosted: Tue Jun 17, 2008 1:46 am 
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ok, its just that when i applied 2 lines on the aluminum bars it spread across the whole cpu evenly.

what are your temps like?


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 Post subject:
PostPosted: Tue Jun 17, 2008 6:46 am 
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Ash wrote:
ok, its just that when i applied 2 lines on the aluminum bars it spread across the whole cpu evenly.

what are your temps like?


That's probably because my one line filled up the gap between the center pipe and the mounting plate. But with this much pressure (pins or bolts), any excess would just seep out anyway (and I didn't notice any seeping out after fitting).

Temps are 32-35C idle, 45-48C load (Q9450 at 3.2GHz, stock vcore).


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 Post subject:
PostPosted: Tue Jun 17, 2008 8:41 am 
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From earlier in this very thread; this is the best way to apply TIM to the an HDT heatsink:

Image

Spread it first, to fill the gaps, then apply two lines, and it yields this:
Image

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http://neilblanchard.blogspot.com/


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 Post subject:
PostPosted: Sat Jun 28, 2008 5:34 am 
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Location: Sweden
Some AMD socket observations:
On my unit the groves for the clip is deeper. Like 4mm instead of 2mm like in the pictures I see of it in the review. Tricky to tell if the clip is centered or not. Had to mount it a couple of times to make sure it was fairly centered. Also dont know if my clip was bent or for some other reason the heatsink was repeatedly tilted a couple of degrees when I fastened it.

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 Post subject: Any opinions on the new HDT-S1284?
PostPosted: Wed Aug 13, 2008 8:33 am 
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Location: EU, USA
Performance looks great. I remember reading that heat pipes are more efficient with greater temp differential, so direct contact with CPU will make them hotter, thus faster heat transfer to the cool end of the heatsink. Yes?

But the AM2 mounting orientation is a deal-breaker for me.

They have a new model HDT-S1284 with 4 heat pipes with AM2 mounting grooves running in both directions, so maybe this one will mount correctly? Also 4 heat pipes may only benefit the AMD since it's a larger die.



The Sunbeam CR-CCTF (review below) has correct AM2 mounting orientation. Also 4 heat pipes, direct contact, and its performance seems to improve with hotter CPUs


http://www.frostytech.com/articleview.c ... 271&page=5


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 Post subject:
PostPosted: Thu Nov 27, 2008 8:02 pm 
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Location: Bellevue, Nebraska
The fan appears to be an ADDA fan, not an Artic Cooling fan.

http://www.addausa.com/model_index.pdf

AD = Adda Brushless DC fan
12 = 120mm frame
12 = 12v
D = Ultra Low (the lowest speed they make)
X = HYPRO Bearing
A = 25mm thickness
7 = 7 blades
B = PWM+FG
GL = Low Noise fan type

This is an outdated list, and doesnt specify our exact fan model, but the weight for all the AD1212 models is the same. 156 grams

http://www.addausa.com/specifications/92-120.pdf

Also im not sure where you got your 600g figure from for the heatsink+fan. The manufacturers website lists 660g

http://www.xigmatek.com/product/air-hdts1283.php

So that would make the weight of the heatsink by itself 500g, i figure the air spoiler and rubber fan mounts is around 4g. Which puts it around 50g higher than the 450g max weight limit specified by intel.

Xigmatek also makes its own Backplate retention bracket if you dont like the pushpings. Here its listed at newegg for $8.49.

http://www.newegg.com/Product/Product.a ... 6835233019


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 Post subject: Re: Any opinions on the new HDT-S1284?
PostPosted: Thu Nov 27, 2008 8:29 pm 
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Posts: 2831
Location: USA
Rebellious wrote:
But the AM2 mounting orientation is a deal-breaker for me.

OTOH it is perfect for the Antec P180/182 series with top mounted fan.

My S1283 is mounted on a AMD 4050e in a Mini P180 with no fan attached to the HS. The top mount 200 Tri-Cool fan running on slow speed is more than enough to exhast the HS.

With the S1283 and no fan attached, my CPU temp at idle is 2 C over ambient room temperature (the mb chipset temp is about 9 C over ambiet room temp). Temps are according to Asus bios.


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