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| Thread ID: 47317 | 2004-07-22 22:39:00 | Power Supply Poll: Do your fans suck or blow? | Billy T (70) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 254517 | 2004-07-22 22:39:00 | Hi Team This thread (pressf1.pcworld.co.nz) about power supplies raises an interesting question. Do your power supply fans suck or blow? I hadn't given this a moment's thought until now, but my curiosity has been aroused. Logic says they should draw the (cooler) ambient air in, and expel the heated air to maximise the cooling effect. This would seem to be particularly important with high power CPUs and video cards because their heatsinks are only as effective as the temperature gradient between them and the surrounding air. To blow pre-heated air into the case would be a very strange idea in my opinion. My fans all suck cool air in. How about yours? Cheers Billy 8-{) ?:| |
Billy T (70) | ||
| 254518 | 2004-07-22 22:49:00 | I thought all PSU fans blew air out of the case - I haven't yet seen one that goes the other way. By forcing the hot air out of the back of the PC, the cooler air is usually drawn in through the front and side vents. Check out the accumulated dust inside the case and how it sits on various bits - this will tell you which way the air is moving. > Do your power supply fans suck or blow? Just wait for those Austin Powers / school boy humour jokes to flow..... :D |
andrew93 (249) | ||
| 254519 | 2004-07-22 22:53:00 | virtually all psu's have the air flow going from the case throught the psu to the outside. having the reverse would cook the pc. a psu can handle 40 degree air temp no problems but motherboards, vid cards, hardrives etc don't like being cooled by such high temps. however i have known techs to reverse psu fans simply to get the (non-standard) psu's to last more than a month on some very shitty pc's. |
tweak'e (174) | ||
| 254520 | 2004-07-22 22:55:00 | I'm 99.99% sure that every PSU I've seen the fan blows air out of the PSU. | CYaBro (73) | ||
| 254521 | 2004-07-22 22:55:00 | Isn't it part of the overall ATX spec that PSU sucks air from case? | PaulD (232) | ||
| 254522 | 2004-07-22 22:57:00 | LOL :^O I agree with your technical point too, but there are arguments both ways that only a poll can resolve. One of my computers uses an old Compaq XT psu adapted to fit a standard PC. It has the biggest and quietest mother of a fan you have ever seen, and it definitely sucks outside air into the box. Cheers Billy 8-{) |
Billy T (70) | ||
| 254523 | 2004-07-23 00:19:00 | All my systems (4) have the fan extracting air from the PC case and blowing it out the back. These include brand name PCs and custom built. Even the laptop extracts the air from the case to the outside. |
godfather (25) | ||
| 254524 | 2004-07-23 00:43:00 | The power supply generates heat, the fan pulls air over the power supply and blows the warmer air out the back. Fresh and cooler air is drawn in the front and side vents to replace the warmer air blown out the back. Pure logic. |
Tobas (224) | ||
| 254525 | 2004-07-23 00:45:00 | :o without taking the comp apart (which is not a good beetle idea) how can i tell which way it goes? i dont think i am techie enuf to open the box yet, but had a thought - ]:) if i block all vent areas it will cause over heat and cook my comp? = get new comp? no i wouldnt do that im to honest and patient..... im just waiting for it to die so i can replace it. :D and also does that mean you shouldnt have stuff (paper etc) around tower then ? cause overheating? ;) and really not a good idea to say beetle pull the tower to peices.....it may never survive the activity :D beetle |
beetle (243) | ||
| 254526 | 2004-07-23 00:50:00 | test the airflow at the back of the PC as you would test the direction of the breeze outside.... | andrew93 (249) | ||
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