The primary noise is from fans. this is debatable; okay, modern 3.5" and 2.5" HDD have come a long way in terms of quietness, It's always possible to encase HDD's, use solidstate or remote drives to remove that source. There is another reason to avoid fans in quiet systems... In accoustics or elect...

I can only speak from the experience of my 'silent' pc, but once you've heard (or rather not heard) a really quiet machine it's hard to compromise and add even a single fan;- While I was experimenting with the p4 version of my machine, I tried adding an 80mm fan ticking over at <5v . It was clearly ...

=> Don't even bother with a single heatsink...Maybe have 4x heatsinks and heatpipes? You can use a single heatsink, if you choose one optimised for point source use: e.g. http://www.aavidthermalloy.com/cgi-bin/euro_exdisp.pl?Pnum=0000D&LengthUnits=mm&ExLength=150.00&TReff=0.411 [This is only an exa...

ok, so, you've 95 watts to get rid of, at less than 71'c at the source. Assume 30'c ambient inside the case, you need to dissipate 94w with less than 41'c drop 41/94 = 0.43 K/w absolute maximum between the cpu and the air. this has to include the thermal resistance of each interface, the heat-sink i...

Heat flows down hill

First ,you need to get a grasp of the science involved in this. For instance: What about the loss of efficiency caused by having a heatpipe between the CPU and large heatsink There is no loss of efficiency, there is just additional thermal resistance (and, with heat pipes, an upper thermal limit) (T...

2.53GHz P4 (SL682 in ga8-siml mobo) under test on the bench at the moment. Sitting at about 50'C (~+30'C) @ 100% CPU useage. http://homepage.ntlworld.com/bill_todd/test/spc2.jpg The copper block is just a counter balance; the whole thing is balancing on the CPU . I hope to use about half of the abou...

3.4W idle, 33.4W load. A Fanless Ninja or Orochi is sufficient i think. That's about the same power output level as the 1GHz P3 in my silentPC project, so I think it's possible. I used a 1K/W industrial heatsink, since it is better suited to fanless operation than most PC CPU heat-sinks. If the Nin...

Very nice looking case :) The grill might look better if you routered out a rebate on the inside, so the grill is closer to the out-side of the box. This should give the impression that the box is made of thinner, sleaker, material. I did the same to the top panel of my PVR box. The top is actually ...

I always thought the "freezer technique" was something of an urban myth

I recovered data from a drive that had an overheating controller chip after a couple of freezer sessions. It can work.

:shock: :shock: :o :P The author doesn't mention whether this thing makes any noise, and/or if it makes ozone? Well, it will be devoid of mechanical noise and vibration. The only noise it should produce is from turbulence, the author doesn't state any estimate of flow rate, but I guess it would onl...

Interesting:

http://inventgeek.com/Projects/ioncooler3/overview.aspx

Here we go again.... 0dB is simply a ratio of 1:1 [Mod: a ratio of what to what?] [edit:] A ratio of any number (usually representing signal power or level) to another. Bels are a useful means of scaling a number with huge range into something easier to handle (e.g. 0 to 12Bels = 1 to 1,000,000). To...

But if you leak water on your computer components you are screwed. Oh yes:), the water starts off non-conducting, but as contaminants disolve into it, it starts to conduct so, if the machine is powered, eletrolosys will rapidly destroy the board! Non-conductive cooling fluids are designed so that a...

a non-conductive water cooling fluid like Fluid XP+ Ultra or something? Hmmm, water, pure water, is non-conductive. (I wonder what magically substance they add to the water? - probably a ph balancer of some description) If you want to play with different viscosities just use wall-paper paste (methy...

http://www.silentpcreview.com/files/images/alleycat/index.html My idea starts with this SPCR member's concept of gel-packs cushioning the drive inside an enclosure which I will then suspend in the case. Here's what I'm thinking. I want to use some heat-sealable anti-static bags. I was thinking of m...

You're an artist with a real eye for detail (that light pine/beach veneer trim sets it off perfectly )

Are the chrome 'switches' operational? (if not, have you seen these qprx touch sensor ics? http://www.qprox.com/products/qtouch.php )

I thought you might like to see a interesting fan design that I found in a Sony LCD back-projection TV. http://homepage.ntlworld.com/bill_todd/test/fan1.jpg I was impressed how quiet it was and how much air it moved while running at full speed. It's an 80mm fan made by: http://homepage.ntlworld.com/...

Bill, you should monitor core 0 and core 1 temps. The CPU temps are not accurate. They're actually Zoob's temperatures :) I was just curious as to why SpeedFan's graph seems to be clipped. (I'm guessing it's because it rounding to integers, although if it is, it really shouldn't display the slopes ...

Anyone know why this speedfan graph shows clipped peaks at about 47'C ?




You seem to have the rear-case fan AND the two radiator fans blowing into the radiator. Is that wise?

I thought you may be interested in what I did to address my "imaginary" sound problem. I wasn't suggesting your sound problem was imaginary. However, your suggestions for the mechanism are (how can I put this politely?) unrealistic . Uncorrected errors from HDDs have to be vanishingly small (a PC c...

With that, I'm going to bow out of this thread, as I know how these things end up (badly)... I had prepared a long reply to WR304's previous post but... I think I'll acknowledge your superiour judgment and bow out myself :) BTW I've spent the last 30 odd years in the pro-audio business, much of it ...

Isolator Impacts on Seek Settling "The major problem created when mounting a drive on isolators is the additional motion in the drive’s baseplate at seek settle. This condition is commonly called the wind-up mode. The isolators are springs that allow the drive’s baseplate to rotate when the tor...

If you already have the heatsink and all you want to do is a few basic cuts, don't get it CNC'ed, just cut it with a hacksaw. That's what I'd do :) I cut the heat-sink for my PVR with bench saw (wood saw). Just make sure you lubricate the blade. The Edges were pretty good, didn't require much finis...

Well, that drawing alone would not be sufficient for me to make it! Initially it looks like you are dividing the heat-sink into six parts, but you have a confusing/misleading vertical red line that only partially bisects the part. There are large white rectangles which are presumably hidden detail (...

I have to say the idea of using a gel pack to reduce impact damage never occured to me. Indeed, the incompressible nature of liquids and gels would seem to rule them of for this purpose. Sony seem to have designed a wrap-around shock-absorber/damper for HDDs. It will be interesting to see how they'v...

BF,

You have a real dust problem there; I'm concerned for your health

Have you concidered electro-static filters? (active ones rather than electret type)

I'm not sure if I can explain it correctly......but the case gets plenty of airflow at low noise levels, but not the sort of ideal airflow that cools CPU heatsinks very well. If the heatsink were taller, and closer to the big fan.......I don't think the 92mm fan would be necessary (assuming the sam...

I'm with Rusty on this one. One option I was considering was to use a large peltier device to raise the relatively cool temperature of a water cooled PC to the higher temperature of a Domestic Hot Water tank. Here, the inefficiency of the peltier pump simply adds to the heating of your DHW (if the D...

could this be possible?... signs of empathy / trust from another person? -emotional tears- i don't know exactly why it failed, on paper it looks really good. Im starting to believe it has something to do with the copper base not making proper contact with the inner heatpipes / rest of the structure...