krusher117 wrote:
Well it's been converting video files (±100%load) for the last 7 hours without any problem. So I'm pretty sure it's stable at 1.33GHZ. I'll probably try to find myself a 1.42GHZ module and overlock it to 1.5GHZ though, the larger cache should also speed things up a lot.

(offtopic: what's up with the karma thingy on the left?)

Post edited by: yann86, at: 2005/12/18 22:25

karma is an unregulated points system. kinda like giving props to somebody when you give them some karma and scolding them when you take it away. BTW, karma to you on the successful overclocking :woohoo:

You can easily clock it to 1.42. I did the same, but added an Apple copper heatsink. I also added 2 small fans behind it and a pci slot fan. That will keep you temps down. The case is the problem. When I put mine in a G5 case (see my mod on this site), temps went way down.
-maestro

maestro wrote:

Changing the case would be an option but that would include a lot of work and I'm not up for such a major mod. I don't know if you've read my previous post but I've currently got a small finned aluminium heatsink being cooled by both a 120 and an 80mm fan providing a total of about 100CFM. Also my current temperatures aren't even that high, CPU is currently 45.8°C according to temperature monitor.

EDIT: I would add the copper heatsink if it wouldn't cost me an arm and a leg to get it :s I might come accross it on eBay someday, who knows...

Post edited by: yann86, at: 2005/12/19 15:16

The heatsink is 60 bucks from Small Dog. Your temps seem great, I cant say why its locking up.
Did you replace the heatsink compound? I used Arctic silver. The stock 120mm fan actually only
cools half of the sink. You can fit two thin 80mm behind the heatink. Also, the mdds, even the newer
ones are noisey as hell, you could replace the fans with Panafloes. What was the temp when
you locked up? You could bump the voltage slightly too.
-maestro

maestro wrote:

I live in Belgium so including shipping costs that would make quite an amount of money.
I replaced the heatsink compound (arctic silver 5) with every test. Also every fan in my system has been replaced by quieter models. As I've said before, I've placed an 80mm fan behind the heatsink where it normally wouldn't be cooled, this seems a bit more effective than 2 80mm fans also because it's been proven that blowing air across a heatsink results in cooler temps than sucking air over it.

Its seems that you have done everything right. Didnt you see which chips you had when you cleaned
the paste off? Mine was a 2003 model with 1.25 A 4mb cache. The 1.42 and 1.25 are actually the same
chip designation but with a higher clock listed on it. Not all chips clock the same. It looks like you
should stay at 1.33.
-maestro

Post edited by: maestro, at: 2005/12/19 18:16

Just my luck :angry:
By the way about the voltage (overlooked it in your last post): I also bumped it up to 1.6V, when I noticed it wasn't stable I went up to 1.625V without improvement. Currently 1.33GHZ @ 1.6V, guess this is the end of my (quite unsuccesful) overclocking attempt

Post edited by: yann86, at: 2005/12/19 18:17

I'd quite like to overclock my single 1GHz MDD, but I was thinking of clocking the bus up rather than just the CPU. If I can get the bus up to 1.67MHz, It will boost the CPU up to 1.25 anyway, and take faster RAM too. All together should make a fairly hefty difference.

Does anyone know how to OC the bus?

Waragainstsleep wrote:


There's a guide on macbidouille (don't worry, it's english) on how to overclock a dual 867mhz MDD's bus speed. I guess it's all the same.

EDIT: forgot the link http://www.macbidouille.com/article.php?id=89&page=3 :silly:

Post edited by: yann86, at: 2005/12/19 19:50