[ev1te]

Today I decided to increase the cooling of the WRT320Ns CPU while at the same time trying to keep the routers good looks and the function of it's protective cover.

I found a couple of heat sinks at home that are about the same size as the CPU chip. I basically cut out a hole in the center of the top cover matching the location of the CPU (exactly in the center of the router) and the size of the heat sink. (I removed the cover first of course )

The heat sinks I found wore all black anodized aluminum, so on one of them I removed the black color in order to find out what looks best. Now I can't make up my mind... the black one or the shiny one? (before I permanently glue it to the CPU) :roll:

Sorry of the quality isn't that good, taken with my cell phone.

[Ronnie_USA]

The black one.

[ev1te]

I added the Black heatsink today and are now running clkfreq=480,240,120. The heatsink is approx. 50-60 degrees Celsius by touch (need new batterys to my IR-thermometer)

I used a very small amount of ordinary Epoxy to fasten it. For applications like this, there is no need for thermaly conductive glue. Since the thermal resistance of such a small heatsink without a fan, is quite high compared to the thin layer of ordinary glue.

Strange thing though; BogoMIPS shows 239.20 at both 480 Mhz and 453 Mhz. Can one trust BogoMIPS or is it true that 480 MHz isn't faster than 453 MHz?

For the record, I stepped up the overclocking from the default to 480 Mhz in these steps: 480/240, 453/226, 400/200 and 354/177. Every time benchmarking the WAN to LAN throughput, which increased approximately by the same percentage as the overclocking.

[Dutchman01]

I did remove some little heatsinks from a old 3D Prophet Radeon 9700 from the memory chips.



I did use 3 of those,
1 pice on the CPU and 2 on the memory of the WRT320N.

With those small heatsinks, there is no need to cut a hole in the top cover of the WRT320N.

And it runs also very great on 480Mhz.
But that did it also without the heatsinks for a long time.

For 480Mhz the need of a heatsink is not really needed, it also can run without it but, for my personal feeling it is better that it has them on it.

nvram set clkfreq=480,240,120
nvram commit
reboot

[Dutchman01]

[LiteUp!]

Setting the WRT320N too 453/226 will also send it to 480/240. You'll end up with the same clock speed. I've been running 480/240/120 here for quite some time with no extra heatsink (also stressed it in a lab environment). It's rock solid.

[ev1te]

[LiteUp!]

[ev1te]

I have experienced some random reboots since I overclocked it to 480.. temporarily I downclocked to 400,200 since I will be going away for a couple of days and need the router (OpenVPN etc.) to be operational.

I'm not sure the overclocking was the source of the problem, but downclocking solved the problem.

[Dutchman01]

[ev1te]

[ev1te]

Just a small update, I have been running the router on 480/240 Mhz for several weeks now, without any reboots or instabilities.

[ka4o_pi4a]

Here is my cooling mod. I have the router from 5-6 months, but can't stand any more, so brake the warranty, open the router and fix 2 cooper heat sinks from, a video card cooler. I overclock the CPU from 354 MHZ to 400 MHZ and it's stable. I want to ask how to clock and the memory (Hynics) ? My Chip is Broadcom BCM4716 chip rev 1 - how much is the max clock of it and how much is the default ? Also the memory ?

EDIT: Does anybody know how i can see how many i clock my router, because in dd-wrt i see only the CPU speed, what about the DDR and the other last thing ??? Thanks

[buddee]

[jammydoug]

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.
_________________