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Old 27-07-2007, 01:03   #42
Alien
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Re: Making a CPU duct to draw outside air onto CPU!

Quote:
Originally Posted by Web-Junkie View Post
Can't do pics, no camera and I don't do 'mobile phones'!!
I didn't say photos, though that would be simplest. For such things I make use of a cheapo webcam that I've had for a few years.
An alternative you could use, which might help you to plan things out as well, is Sketchup:
http://sketchup.google.com/

Quote:
Originally Posted by Data View Post
The pre-made ones are a little unweildy, unless you shorten the pipe. They are also not the best flowing thing you could use.
Have a lokk at this article:
http://www.overclockers.com/tips1187/
Funny thing about that article is my temps are the same or better than his, & I don't have any ducting: CPU [XP 3200+, just like his] is currently 1-2°C cooler than his was with the ducting, & my system temp is 28-29°C. In the interests of full disclosure I should mention that I have my air conditioner keeping my room pleasantly cool. Also, whilst I'm using a different heatsink on the CPU, I have the same fan [YS Tech TMD fan] on it [except mine's black].

The above paragraph was written the other day, & saved in a text file until I got round to writing the rest of my reply, & since then I've upgraded my system. I'm now running an AM2 X2 6000 with the heatsink that came with it, & both cores hovering around the 38-40°C mark. Admittedly that's just normal temp, not full load. The highest I've seen it go is 58°C [had Orthos running for a while to see how hot it would get]. That's a bit warmer than I'd ideally like, & if/when I find myself maxing out my CPU more regularly I might get round to putting on the Freezer 64 Pro I have. Speaking of the Freezer, you were concerned about weight - according to the box it's 524g. That's a bit over the recommended limit, but not that much.

I must confess I was rather spoiled by the heatsink I had on my XP3200 [Zalman 5100Cu], as load temps rarely went more than 5-10°C higher than idle temps.

Quote:
Originally Posted by Data View Post
Wow, a slotted CPU, haven't seen 1 of those in a while!

Quote:
Originally Posted by cmatt View Post
make your own ducting sir...

however just to point out... in custom pc - i saw a UUUUUBER cool (badoom tsh) heatsink - that was huge, ontop of it went 2 80mm case fans, i think it was zalman...

anyway - this one is very similar to what im trying to describe (and screwing said description up in the process):

http://www.overclockers.co.uk/showpr...=57&subcat=821
Sure it wasn't this 1?

Quote:
Originally Posted by Web-Junkie View Post
Ran 3DMark06 with the case lid off and then case lid on and the CPU Fan never went above 4,000 RPM, it did hit 5,600 previously, and CPU went between 55°C - 60°C
I know you said you have an AM2 CPU, but which 1? I'm running an X2 6000 with the stock heatsink [I don't know if lower model AM2s come with a different HSF or not], & as I mentioned before get about 38-40°C idle/not doing much, & 58°C full load. If yours is more than 1 or 2 models below mine then the airflow [or lack of] in your case might be the source of your problems, & not the CPU cooler.

I have 2 120mm fans, 1 back & 1 front - the front is a more powerful 1 as it has to compensate for the dust filter infront of it. My Ultra PSU does have an 80mm fan underneath it. How tidy is your case in terms of cable management? The more you can keep cables out of the way, the less they'll affect airflow & therefore temperature.

Another thing to consider is where the intake & exhast fans are mounted.
This:

...is a good example of bad case design. Seriously, how are you supposed to get decent airflow through that? [not my current case, that's from an old 1] If your intake/exhast fan mounting points are anywhere near that bad then you would get a noticeable improvement in both temperature & reduction of noise by cutting out 1 nice big hole. If you have a holesaw suitable for cutting metal [or can borrow 1], then that would provide the neatest looking hole. For an 80mm fan you'll want a 76mm hole, I forget what size you'd need for a 120mm, but you can just measure your fan. other alternatives are using a Dremel, or if you're a masochist you could just drill way more holes, then try joining them up with a file/tin-snips/whatever. The way I did my last fan hole was to drill some holes & then join them with a nibbler [didn't get mine from there, can't remember where I got it from]. It's not too hard to get a nice clean edge with a nibbler either, though I'd advise wearing some sort of padded gloves or whatever unless you're used to doing a lot of work with your hands, otherwise you'll end up with blisters.

Quote:
Originally Posted by Web-Junkie View Post
Was running ANUS Probe II so not sure how accurate the fan speeds/temps are being reported.
I get the strangest feeling you don't like Asus' software. Have you tried SpeedFan? I remember seeing someone post elsewhere on this forum that SpeedFan doesn't read core temps. I can't comment on the Intel side of things [that's Zingle's department ], but it reads the core temps on my X2 6000 okay [compared its readings to those I get from the prog Core Temp - they're not identical, but close enough].

Quote:
Originally Posted by Web-Junkie View Post
Currently it's idling at 3,600, CPU temp 43°C and I never thought to record the temps without the duct in place
Idling at 43°C? Even after adding the duct? If you have the same heatsink as me:

then either your room's warmer than mine, you're not getting decent airflow through the case, or you're using the goo that came pre-applied to the heatsink instead of something like Arctic Silver.

Quote:
Originally Posted by Web-Junkie View Post
The PSU doesn't make any noise, it's a PC Power & Cooling SILENCER and is, well, silent
Did you order it direct, or did you get it from a UK stockist? & if so, who?
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