Here's a rather theoretical post on fans, flow, pressure and noise, building on the sticky Are 2 fans noisier than 1 blowing the same CFM? (In that topic I wrongfully posted some fauly conclusions, which I hope to rectify herein.) Summary : 2 fans in parallel are more quiet than one (especially for ...

Hi, I've tried this concept previously, albeit not with the PICO, see: mini-itx for gaming Some questions for you: Check the PICO for max amps on 12V, might be the breaker for this. What's your CPU HS? Supposedly even a Shuriken might be noisy in this case. Has the 5670 got the extra PCI connector, ...

@speedkar9: HDD horisontally OK, is horizontal important, or just how it's most easily mounted? Will do on the cabling then. The rear fan I'm aware will lower temps, question is will it add sound? (Sort of the question: are two fans better then one noisewise, if total air flow is kept constant? I'l...

(Third try at posting... see if it'll stick this time) @speedkar9: HD mount is my first try with this type of suspending, will try repositioning it in 5.25 bays (used to have a Sunbeam tray, but the rubber bands snapped after a year or so). Cabling will be tidied when setup is final, as for now I th...

Here's my latest try at silence, based on the thought that total power load should be equally divided between PSU fan and case fan. Alas, the case is ducted/divided so PSU takes its own load plus the CPU, and the case fan takes HDD:s plus graphics. In this setup I have put the 120 mm fans in the PSU...

Very interesting, quite similar to my current setup, where I try to separate air flows for CPU/GPU. (Mine has two separate compartments: upper = ODD bays-CPU/northbridge - PSU w fan; lower = inlet fan in bottom - HDD suspended - GPU w fan). The idea is to split the heat load from the components equa...

Hi, tried to send the following to info@silentpcreview.com, it bounced. --- Stumbled upon the link http://www.silentpcreview.com/article25-page1.html, which appears to be broken (only the first paragraphs are shown). Tried to connect via Site Admin on your contacts page, left me with a Page Not Foun...

MikeC: You got my point perfectly, and just as in the beginning of my first post, I realize that real-life testing really is what does it. So, any takers on sharing? My question arises from two personal experiences: - recently trying to duct a bottom fan PSU, but the case wasn't up to it - some yea...

judge56988: You're right, it's sort of a typing error - should read ""... puts much of the heat load of the case on the PSU fan, and only some on the case fan , thus forcing the PSU fan into higher rpms than when ducted." (Also edited in OP). b_rubenstein: I'm losing you here - are we having a sema...

judge56988: You're right, I simplified a bit, maybe confusing. Really you also divide by air density (giving mass) and air heat capacity (J/kg,C), roughly 1.25. Thought the figures would be close to the real ones, just for arguments sake. As for making sense, follow b_rubenstein's link, especially ...

I was wondering if anyone has tested noise difference between ducting the PSU, and using PSU fan for ventilating the case as well. My theory would be that in the ducting setup, the case fan is alone in providing a good case temperature for CPU, GPU, etc, thus requiring a higher flow rate than "norma...

They would be pushing less than 20 cfm, albeit at higher pressure than when just using one fan. Are you familiar with fan curves and air path impedance? Here's some in-depth: - cfm-rating is normally at free-flow, i.e. in open-air setup (no impedance) - putting a fan in a case, increases impedance, ...

Yes it can be done, theoretically. As per above, the driving force would be the difference in density, caused by the difference in temperature. It's not needed to have an assymetrical loop though, more important is to make sure the friction loss in the tubes is kept at a minimum, i.e. wide tubes (1"...

In the old days, you could get the whole article on one page, not so any more since a couple of years. So I found this app, working at least for Chrome - Autopager. It loads and merges the next page as you scroll down, until finally you can view, or print, the entire article on one screen. Chrome li...

Still in love with this case, battling with the thought of modding it to make a narrow mATX board fit as per above. Question is, is it worth some $80 to go through a major reconstruction of back panel+MB standoffs on side panel. (Plan is to reuse bottom pair of standoffs, take away the upper ones, a...

Once again one must point to how fans and air flow works. Air flow: pushing air through a case has to overcome the pressure drop caused by impedance. Basically pressure drop is related to air flow by the square (double flow=four times pressure) Fan: Fans have more or less teh reverse relation, at 0 ...

2) check this site; Cooler Master Power Supply Calculator 3) I argue that for case fans you should choose inlet OR outlet. Since they'll be pushing the same amount of air, you get 3 dB more noise, unless their combined pressure lets you rev them down. Might be worth testing in the full setup. Side n...

Great info on the 3480, thanks! I too sense the impact of cavity noise, an increase in sound when I put the panel back on - hence the need for internal damping of the panels. Now I lean towards not only car material for weight, but also foam for this cavity nois. Too bad to hear about the noise of t...

Hello, I like both these cases, but want 'em small. So the 3480 wins, especially if I can make the PSU quiet. But, it would be nice with the 180's thicker panels. Measures for the cases are: Height 349/435 mm Mainly because of the large top fan, and a higher PSU chamber, right? Length 356/436 mm See...

Updated 3480, how about thick panels as in the P180?

/d

All things equal, a smaller case benefits from higher air velocity that cools parts more efficiently, or lets the fans run slower - but loses in higher air impedance, which makes the fans run faster. Can't really tell which one wins at this late hour. Another way to attac the problem is to look at t...

Sapphire now has one.

Sapphire IPC-AM3DD785G

ryboto:
It's the Sapphire I had in mind for this - the ONLY board with AM3/DDR3 for mini-ITX.

MikeC:
I see now that the Sugo actually is smaller than the Q07, but the Q07 has a smaller footprint (and larger front then). Will investigate further...

/ d

Wow, thanks for all your initiated responses. Nighthog: Does the graphics card fit inside this case? Yes, its 167 mm, inside case is 205 mm. These cases are meant to be displayed! Agree, if it's quiet enough I will - for now, small is of the essence. MikeC: The Silverstone SG05/06 seem much better t...

It's not just any external source, its AMD. It's an old PDF for Athlons ( AMD Athlon System Cooling Guidelines ). Here's what it says: A front cooling fan does not seem to be essential. In fact, in some extreme situations, testing showed these fans to be recirculating hot air rather than introducing...

Hi, got this setup in mind: Case: Lian-Li Q07 CPU: AMD Phenom II X2 550 RAM: 2x2GB DDR3 MB: AM3, mini-ITX GPU: HIS HD5750 1GB (single slot!) PSU: OCZ Modstream 500 W (not the quietest, but in price range + modular) HDD: Seagate Barracuda 722 rpm 750 GB ODD: External 3rd party coolers: CPU: Scythe Sh...

No blame was meant to be put andyb, I agree that you can let a thread evolve etc. In my opinion the thread had now had several posts in a row not adressing the original issue, which I think called for re-aligning. All in the interest of the reader, to not be annoyed with following an interesting thr...

Excellent, I knew we were all a bunch of grumpsters :wink: Sorry to point out that my original post was not about bad language, or spelling (although posts without commas or periods, sprinkled with net slang, are illegible at best). Feel free to start a new thread on education and differences of Eng...

I like the forums spread all over the web, especially when I'm looking to solve some intrinsic computer error (product manuals these days seem to be automatically produced by listing what each menu choice performs, in stead of teaching good procedure when using the software). I also like the handine...

datapappan = 'the computer dad' in Swedish.