Fanless P4 3.06G

AlexHu · Post by **AlexHu** » Sun Jan 26, 2003 9:40 am

Numano3 is at it again. This time, he did a fanless P4 at 3.06G !

http://www.geocities.jp/numano3/index.html

TheMuffinMan · Post by **TheMuffinMan** » Sun Jan 26, 2003 12:03 pm

56 C though! That's pretty hot for a P4. They usually slow themselves down at high temperatures.

Had part of the aluminum block been copper, it might have performed better.

powergyoza · Post by **powergyoza** » Sun Jan 26, 2003 12:48 pm

Phrozenpenguin · Post by **Phrozenpenguin** » Sun Jan 26, 2003 1:54 pm

Blimey.
Gives me hope for my athlon 1.2

Gxcad · Post by **Gxcad** » Mon Jan 27, 2003 10:46 pm

Oh my god, thats is the largest cpu heatsink I've ever seen. Yet here I am still suprised it can passively cool a P4 3.06ghz, LOL.

-Ken

powergyoza · Post by **powergyoza** » Sun Feb 02, 2003 2:28 am

I looked at it again and saw his extra mounts for the heatsink. It almost looks like it's done the opposite to the normal way of HS mounting. The motherboard looks like it's mounted to the heatsink, rather than the other way around. I think this is the ticket to using supa-oversized HS! His idea to use a big Al-block is like bluehat's idea to use an AX-7 to lift his big Al-HS above the DIMMs.

hyum · Post by **hyum** » Mon Feb 03, 2003 8:45 am

56 C though! That's pretty hot for a P4. They usually slow themselves down at high temperatures.

P4s start to throttle at 100 C in automatic mode.

Gekkani · Post by **Gekkani** » Mon Feb 03, 2003 11:24 am

uh?! 100ºC!!! No way...

Thats TOO HIGH. At 100ºC P4 dont do a throttling it simply die.

Where u read that?

d_kay · Post by **d_kay** » Tue Feb 04, 2003 5:17 am

why can't anyone sell passive PSU like that one.. I would consider spending 200$ if it would be completely quiet. No coil-buzz. Make it completely in Alu, and connect it to the Alu-case thus using the case as a gigantic "heat-pipe".

hyum · Post by **hyum** » Tue Feb 04, 2003 8:45 am

uh?! 100ºC!!! No way...Where u read that?

the datasheet

Thats TOO HIGH. At 100ºC P4 dont do a throttling it simply die.

no, it's not too high. if fact, it's conservative. i've run intel CPUs over 100° C for extended periods of time. additionally, the P4 thermal control circuit (TCC, which is not the thermal diode), has an additional catastrophic thermal protection at Tj=135° C.

Gekkani · Post by **Gekkani** » Tue Feb 04, 2003 11:35 am

have u seen P4 thermal specs?

For example:

Pentium® 4 processors at 2.40B GHz

- sSpec Number SL6RZ
- Processor Frequency 2.40B GHz
- Package Type FC-PGA2 478-pin
- Core Voltage 1.525V
- Bus Speed 533 MHz
- Thermal Design Power 59.8W
- Core Stepping C1
- Max Junction Temp 71°C

http://processorfinder.intel.com/script ... rocFam=483

hyum · Post by **hyum** » Tue Feb 04, 2003 12:56 pm

yes i have seen the thermal specification. it's on the datasheet, not a webpage script. i don't design to webpage scripts.

look on the datasheet and you'll see that the script is displaying a misnomer. probably due to the inflexibility of the web script, maximum Tcase is misprinted as "Max Junction Temp".

jojo4u · Post by **jojo4u** » Tue Feb 04, 2003 1:27 pm

hyum wrote:
56 C though! That's pretty hot for a P4. They usually slow themselves down at high temperatures.
P4s start to throttle at 100 C in automatic mode.

56°C ist not very high. 65°C are safe. P4 starts throttling around 70-80°C.

hyum · Post by **hyum** » Tue Feb 04, 2003 6:44 pm

and that statement is based on what evidence, i'd like to know.

jojo4u · Post by **jojo4u** » Wed Feb 05, 2003 2:31 pm

hyum wrote:and that statement is based on what evidence, i'd like to know.

I read it in a german newgroup. Rainer Knaepper stopped the fan on his 1,5Ghz P4 and watched the throughput of the RC5 client. AT 68°C it started throttling and went up until 76°C.

http://groups.google.de/groups?hl=de&lr ... ogle-Suche

Andreas Schürger also states that on a handfull of tested CPUs the throttling starts at around 70°C.

http://groups.google.de/groups?hl=de&lr ... 0%26sa%3DN

Peter Schulze had a broken retention module. His CPU went up to 84°C.

powergyoza · Post by **powergyoza** » Thu Feb 13, 2003 12:27 am

TheMuffinMan wrote:56 C though! That's pretty hot for a P4. They usually slow themselves down at high temperatures.

I just noticed that once he used his case to wick away the extra heat, heat brought his P4 down to 45C. That's pretty damn good!

JWarrior · Post by **JWarrior** » Tue Feb 18, 2003 5:06 pm

Acording to x-bit labs, the P4-3.06 begins cycling down at 72 degrees Celsius

Bigg · Post by **Bigg** » Sun Mar 02, 2003 11:30 am

holy crap!!!
just get wcing if u need no fans. that could be in serious overclocking territory with just a panaflow L1A

jpsa · Post by **jpsa** » Mon Mar 03, 2003 11:19 am

In my opinion this is really extreme... any harddrive will make more noise than a fan @5volt

I have 3 80mm fans and 1 90mm all running @5volt and I can't hear them, and my harddrive is really quiet too (5400rpm maxtor)...