Homebuilt MXM 2.1 II heatsink [Acer Aspire 5720g + 9600m GT ddr3] big pics inside!

I had way too much trouble finding an original Acer heatsink, I found this to be much easier. Its not finished but I watched a whole movie with it like this and the fan didn't go on full once.

I haven't even installed drivers yet.
More updates soon!

 

wow, is amazing. I'll wait for news.

 

Haha looks like band-aid

 

So you moved the stock fan over from the normal position to on top of your new heatsink? Does the CPU still get enough cooling?

 

Yes thats what I did I noticed actually the copper on the 9600m stayed pretty cool but the fan would still turn on, I think the CPU was cooled enough with the general airflow. That piece of copper is thermal taped to the radiator, I don't know how much it helped but I felt it getting hot.

Like I said the fan would turn off after a while, I don't know what temp the Acer BIOS tells it to turn off at. I will do more tests later

 

*nod* For general use it's probably alright, I'm more worried about at heavy or stressed loads. That would take testing to find out, of course.

 

Well... nice idea, but watch your temps when you have a lot of load... You said u didn't install the drivers yet, I expect the temps to be higher with it installed.

Let us hear about the further testing.

 

Well I did install the drivers, I'm using an HP fx 770m card now. Yeah the fan seemed to turn on more. I didn't have gpuz tho, I was only starting it up (before with the MSI card) to get the vBIOS and flash it to the HP card.

I kno it will be too hot, the thing is I'm changing it before doing more testing, also there is likely to be some variation as with anything handmade. But I'm planning on using one of these HP Pavilion DV4000 HEATSINK - eBay (item 250774482959 end time Mar-17-11 18:02:24 PDT)
They're for about 25w. I sawed some of the copper off but it still weighs about the same as an 8 pack of rhs-03 ramsinks. The 8 pack of mc-200 weigh a bit more. This is off the subject but I'm just remembering I took pics with all the weights of several non heatpipe pentium M copper heatsinks compared to the ramsinks everyone buys, I thought it would be good to do a comparison so I'll post that later.

 

Well, ramsinks have the advantage of extra surface area compared to "just" a heatsink of the same weight. In general, heatsinks are just for absorbing heat before transferring it to somewhere else to be gotten rid of (hence the heatpipe to the radiator fins where the fan exhausts). Ramsinks, are usually meant to absorb heat, and then radiate it away via those little "fingers" that expand their surface area for heat radiation. They work best with airflow flowing past those little fingers to carry away the heat they're trying to radiate away.

 

do you have a picture of the original heatsink setup?

 

Well now that I did this I might just buy a heatsink, its here:
Acer Aspire 7720 Laptop Heatsink GRAPHIC CARD Cooler - eBay (item 270699858718 end time Mar-01-11 13:52:44 PST)

So youre saying they are designed to move heat over different distances.
Yea. The heatsink I posted works in the same way as the ramsinks, it just has thinner fins because its meant for use with a fan. Its not really moving the heat any further than the ramsinks.

 

Essentially. Although some heatsinks just "store" the heat and then release it slowly, for usages where there's just a very short heatup process and then the component turns off (so it just needs to reduce the heat gain for a little while). And by posted, you mean the original one, right, and not the link I've quoted? As you can see that in the quoted link, there's the heat pipe to transfer the heat that the heatsink picks up to the radiator fins in the fan to be gotten rid of.