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| Thread ID: 60921 | 2005-08-18 04:47:00 | Airflow over a CPU | chiefnz (545) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 382023 | 2005-08-19 04:49:00 | Well I've turned the fan around.. which is opposite to how it was in the 1st place I also installed (well rewired really) the fan which is attached to the side of my iCute case, this fan is also blowing cool air into the case. I've been monitoring the temps all day and this is what they look like... CPU - average - 41 degrees CPU - peak - 44 - 45 degrees CPU - lowest - 39 degrees mobo highest - 29 degrees mobo lowest - 24 degrees Overall the results I think are good and it's not as loud as I thought. cheers chiefnz |
chiefnz (545) | ||
| 382024 | 2005-08-25 10:58:00 | Can't resist adding my 2 cent's worth... I recently had big CPU heating problems with my 2.8GHz P4 mounted in a Lian-Li 'Silent' case. The case case kept the noise down (sort of) but also kept the heat in. CPU temperature would reach 70C + when processing long video files, making it necessary to whip the side off and get cool air in ASAP. I thought about spending big bucks on a fancy cooler, but it didn't seem right. The real problem is not just getting heat from the CPU to the heat sink, but getting a supply of cool air to pass through the heat sink. If the environment in the case heats up, then the heat sink & CPU will heat up with it - heat transfer works by temperature differences, not absolute temperatures. It seems Intel have come to the same conclusion with their "thermally advantaged" case specification. I spent $7 on plumbing bits at Mitre 10, cut a 80mm hole in the side of the case immediately over the CPU and ducted room air into the CPU fan. The result is dramatic. When processing a video file the CPU temperature topped out at 51C, over 20 degrees less than before the mod. Idle temperature is around 37 - 38C, down from 43 - 44C. A Dick Smith inside/outside thermometer attached to the case interior used to record an inside ambient temperature of around 33C, now it sits around 27 - 28C. Way to go, as you might say. |
Jayess64 (8703) | ||
| 382025 | 2005-08-26 09:55:00 | Ok simple question... Would it be better for the fan on my CPU to EXTRACT the hot air from the CPU or would it be better if the fan BLEW cool air over the heatsink and CPU? cheers chiefnz LOL. Forgive me but that's a stupid question.. Do you get cooler standing behind a fan as it blows air in the opposite direction of you? Or do you get coolor by standing in front of a fan as it blows air toward you? Normally when it's a hot day, I don't point the fan away from me to "suck" heat from me. I let the air blow on me, it cools me down pretty well. :) |
TheAMDMan (8740) | ||
| 382026 | 2005-08-26 10:45:00 | LOL. Forgive me but that's a stupid question.. Do you get cooler standing behind a fan as it blows air in the opposite direction of you? Or do you get coolor by standing in front of a fan as it blows air toward you? Normally when it's a hot day, I don't point the fan away from me to "suck" heat from me. I let the air blow on me, it cools me down pretty well. :) and thats an stupid answer. heatsinks don't sweat like you do :p |
tweak'e (69) | ||
| 382027 | 2005-08-26 17:41:00 | Thanks tweak'e, I was going to reply in a similar fashion. cheers chiefnz |
chiefnz (545) | ||
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