WRT320N, Extra Cooling/Heat Sink, Case Mod

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()blivion
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Joined: 05 Aug 2010
Posts: 20

PostPosted: Thu Oct 28, 2010 15:17    Post subject: Reply with quote
Ronnie_USA said:
Quote:
The black one


Yeah, I agree. Black heat sinks are also better at passively cooling than shiny ones because of "emissivity". Which is prolly why it was black to begin with. I used a heat sink from an old video card in my WRT54G v8. I hack-sawed it in quarters, then stuck it on the CPU with generic two part epoxy. It's plastic based epoxy, but I bet it conducts heat better than air. Definitely holds the heat sink on the CPU better than air. LOL


jammydoug said:
Quote:
Hi
My Micromark drinks cooler has stopped its cooling effect. It's the type that has a fan on the back and a heat sink assembly, with a little printed circuit board, that provides the cooling effect. It used to get quite cold, and at one time there was even ice forming at the back on the inside, but now it has stopped and even gets warm.


I'm not positive as you didn't give exact information, but that sounds a lot like a "peltier cooler", sorta like this one, but bigger mabe?

http://www.engadget.com/2007/01/04/usb-powere-drink-chiller-warmer-keeps-beverages-happy/

You said it was forming ice, I think the chemistry of some peltier coolers (the "circuit board") is water sensitive. And if it got wet inside it's probably junk now. google "peltier cooler" and maybe get a new/better one that’s sealed properly. A 150+ watt unit would be bad ass, if you don't mind having to drink your beverage with a ice pick.

(P.S. It's not my problem, but this is sorta getting away from the original topic.)
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dkk991m
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Joined: 14 Nov 2010
Posts: 14

PostPosted: Sat Nov 20, 2010 3:02    Post subject: Reply with quote
Hi,

I am thinking about adding a cooling mod to my recently purchased WRT320N.

I love ka4o_pi4a's cool copper heat sinks--wonder where I can get them?

I am seeing these heat sinks on eBay that seem to be the right sizes for the Broadcom CPU:

18x15x5mm : http://cgi.ebay.com/Aluminum-Heat-Sink-DDR-DDR2-DDR3-RAM-Memory-RHS-02-/140288864130?pt=LH_DefaultDomain_0&hash=item20a9de2f82#ht_3465wt_869

17x16x6mm : http://cgi.ebay.com/Blue-Heat-Sink-DDR-DDR2-DDR3-RAM-Memory-8pcs-/250697170161?pt=LH_DefaultDomain_0&hash=item3a5eb73cf1#ht_2902wt_990

Wonder if which of the above two kinds is better?

Any take? Better/slightly larger ones anyone can recommend?
dkk991m
DD-WRT Novice


Joined: 14 Nov 2010
Posts: 14

PostPosted: Sat Nov 20, 2010 9:41    Post subject: Reply with quote
Or, is it better to use this:

http://www.zerotherm.net/eng/product/ZH100.asp

For Broadcom CPU: use 2xB-type heat sinks
(total area = 24x22mm)

For Memory : use 2xC-type heat sinks
(total area = 22x8.2mm)

Pro: there'd a larger heat sink area for the CPU (24x22mm > Broadcom CPU surface area 15x15mm), which is very good

Con: there'd be slight gaps between the 2 heatsinks sitting side-by-side:

- along the edge next to each other
- the area @ the bottom where there's no coverage from the thermal tape

Would that be ok?
barryware
DD-WRT Guru


Joined: 26 Jan 2008
Posts: 13049
Location: Behind The Reset Button

PostPosted: Mon Nov 22, 2010 22:22    Post subject: Reply with quote
dkk991m wrote:
Or, is it better to use this:

http://www.zerotherm.net/eng/product/ZH100.asp

For Broadcom CPU: use 2xB-type heat sinks
(total area = 24x22mm)

For Memory : use 2xC-type heat sinks
(total area = 22x8.2mm)

Pro: there'd a larger heat sink area for the CPU (24x22mm > Broadcom CPU surface area 15x15mm), which is very good

Con: there'd be slight gaps between the 2 heatsinks sitting side-by-side:

- along the edge next to each other
- the area @ the bottom where there's no coverage from the thermal tape

Would that be ok?


the 17 x 16's in your last post are the exact ones I use. The fit perfectly (processors) and the thermal tape they have on them works very well. No need to replace it.

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