GigE/Powerlogix dual'47 cooling « Thread Started on Jul 19, 2006, 10:00am »
Hi there (and steve ) I recently bought a PLX dual'47 1,6Ghz for the old GigE. I was wondering how to enhance cooling for this dual CPU but I can't afford (and have not tools and ability) to mod a watercooling system for it. Then I found this nice looking product : nitrogon 01V2
so if anyone has an idea if it could fit (without to much work) in the GigE, and any idea on how to achieve it, it would be quite interesting... I was looking for detailed info regarding its size but did not find more than this : 141 mm (W) x 108 mm (H) x 105 mm (D) at silverstonetek so maybe someone ha more info on this product...
you can try modding it to the cpu by maybe using the same idea that aquamac has for his aftermarket mdd watercooling connection. as for where it might sit, i would say reverse it so when you close the case, the fins sit above the cdrom area. since nothing really sits up there anyways on most macs.
thanks for the tips. I'm pretty sure I won't be able to have it placed with fins above DVD-r (maybe others could do it) Anyway, next time I get 38€ to spend, I might try this thing. I will still need to find a way to evacuate more of the heat inside the case since GigE is really not meant for it. I'll first try to drill some hole where QS and DA have, next to USB/FW/Eth ports. I'd like to keep the GigE aspect as close as original. Not that I don't like aqua's modding syle, but I know I can't do it as clean and I don't want the GigE to look dirty. I think I'll also need to drill some holes in in the ATX PSU I'm using since it is running quite hot (not surprisingly with 37°C in the room) and as it's an old standard ATX PSU, and has very few holes to help air flow...
That is quite an interesting proposition you have there, as the radiator may just fit above the CD Drive. I don't think it will fit below - due to the offset of the radiator, but there is one thing for sure, it would make a fairly dramatic difference to the cooling on your powerlogix processor. I have thought about these coolers before, there are a number around but this one looks like it will accept 2 x 80mm slim fans or even 4 perhaps at 5 volts (2 slim fans either side).
One of the most difficult problems with the G4 cases is getting hot air out or cool air in. Having cooled the processor you still need to remove the air. If you were interested & sent me your plastic top, I would be happy to cut 2 neat holes for twin 80mm fans (as I did on my Quicksilver - See Website). It would only cost you the postage. That would still involve you cutting the metal though, ( I take it you are not planning on coming to the south of England for your hols) or I could lend you my case cutting punch! This would allow you to fit 2 x 80mm fans to the top of the case. When I first had a go at watercooling a Quicksilver I was a bit dissapointed with the results as I mounted the rad internally & basically the rad was heating up with the recycled air. It wasn't untill I removed the hot trapped air that the temps really dropped.
There is no doubt that your silverstone idea might work, but it will probably be a case of needing to offer it up to the case & if it really looks like a no-go sending it back. If I can pick up one locally I may just have a look (I have a pretty friendly local small store that lend me bits), I use a Gig ethernet at work With Dual 7457's at 1.3 gigs.
Let me know if you are interested in the holes in the top of the case idea, I know some people don't like to deface their Apples!
PS. Looking back at those dimensions the fans that will fit this are probably 60mm or most likely 70mm!
yep, it's meant for 2 60mm fans. I'd pretty much like the idea to get this stuff on my PLX upgrade. I also thought if it could fit under DVD/zip compartment to have a hole drille on the bottom of the case, right under the heatpipe fins. I know it's better to have hot air flow away from top of the case, but with a GigE, any position to have hot air flow away from the case is better than original "no way out" ! Is the dual 7457 in you GigE from Powerlogix ? If so, it is likely CPU placement is quite similar to 7447A board.
Anyway, I'm not sure I'll try to have it installed as running the dual'47 in NAP mode makes it run really cool most of the time, even with both 120mm and CPU 80mm fans running slower (I just put 1 regulator to control both fans RPM simultaneously) I just have to put the fans back at 100% when I know I'll have to run both CPU at full charge for a long period... But the only thing is this heatpipe looks really nice, so even if I don't need it, and if installing it also means I need to drill some holes to have some hot air flow outside the case, I still have something telling me "do it dude !!" (looking on my shoulder I just see a little BSD demon smiling I guess it's his fault )
Gotoh, Yes my Gig Ethernet is a powerlogix, one of the last 7457's, just before the 7447's came out. It's rectangular in shape with a bit cut out of the heatsink to fit around the CD/ZIP cage. I may just try this out, there are also some other similar products to this one that I can physically look at, during the weekend. If I find anything suitable I will let you know.
I guess the stock heatsink looks like this maybe copper style painted ? I think they are using same heatsink shape for every recent cards (to lower costs) They don't even selle different boards/heatsinks for 133Mhz bus G4 Let me know if the little demon talks to you and you try it one the dual'57 before I try it myself !!
Yes that is like my Powerlogix at work - but the board underneath stretches the full width. The link above is more like the units that I have seen before, the fact that it takes a 92mm fan is a bonus also. To be honest if you can use a bigger fan go for it, they seem to whine less (if you get a good one) and also shift more air. I have a small local computer shop (I think I've kept them in business for the last few years) that let me borrow stuff and size it up at home which is usefull. I will take a look this weekend.
The demon is hovering around my shoulder saying yes, yes softly, how can I deny him.
Right then, I borrowed 2 of these heat pipe type rads yesterday and I must sadly report that, they cannot be used without serious modification- in other words without removal of the zip drive cage & shelf in a Gig Ethernet! There is not enough room above the CD Drive even with the fan removed, so I'm afraid guys it's back to the drawing board on this one!
Yeah I tried that, but you'd have to bend them an awfull lot! The heat pipes end up hitting the drive bay too. Certainly there is no way the ones I borrowed were going to go in there, not without serious modding. I was really quite supprised.
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