1GHz Pentium III Tualatin Boots w/o HS/fan

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phaxmohdem

phaxmohdem

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Aug 18, 2004
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Ok so I forgot I had taken the HS fan off of a 1GHz Tualatin system I just got, and I booted it up today to see what was on it. The computer actually booted into Windows 2000, I was able to change some display settings even before the computer shut down from thermal overload.

Just thought I'd post that because I find it remarkable that a 1GHz+ Desktop CPU could go that long without any kind of cooling, My XP 1700+ CPU lasted all of 5 seconds before smoke was spewing from the case. Tualatins Rule!
 
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AlabamaCajun

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Mar 11, 2005
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Tuas have throttling plus you have an IHS and the sink keeping it in spec. Until the NW version C, the Tuas were the best Intel chip.
My wife gets my OCed Tua running at 1.35G running ice cold with a TT Silent boost Primed 22 hours.
 
phaxmohdem

phaxmohdem

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Aug 18, 2004
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Lol, no I try not to anyway... I was super pissed at myself for frying that 1700+ though.

BTW Alabama, I meant to say that it was just the CPU in the socket, by itself, no Sink, no fan no nothing. That's why I'm amazed it ran so long before overheating...
 
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PhlashFoto

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Jun 21, 2003
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Originally posted by: AlabamaCajun
Tuas have throttling plus you have an IHS and the sink keeping it in spec. Until the NW version C, the Tuas were the best Intel chip.
My wife gets my OCed Tua running at 1.35G running ice cold with a TT Silent boost Primed 22 hours.
Click to expand...

Actually, P3 based cpus did not supported clock throttling. The first cpu to do so was the P4. Most of Intel's cpus before that had an on-die temperature thermal diode within the cpu to either lock up or shut down after a certain max temp was reached.

All the IHS does it keep the core from being exposed and cracked by improperly installation of HSF. It doesn't help much by "keeping it in spec".
 
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Fox5

Diamond Member
Jan 31, 2005
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I've had my xps run without a heatsink before....occasionally they actually post. They've never fried though, I'm assuming the motherboard shuts them down mighty fast. (yay nforce2?)
 
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Fox5

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Jan 31, 2005
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Originally posted by: Zap
My Coppermine P3 700@933 (yes overclocked) was able to boot into Windows 98 without a HSF attached. It had fallen off when the computer was accidentally knocked over.

video of VIA C3 running w/o HSF
Click to expand...

Hmm, the VIA chips work in old Pentium mobos?

Nice that the C3 can run without a heatsink...too bad performance is nowhere near that of the Celeron used there. AMD and Intel don't have official products that can compete with the C3, but take one of their mobile cpus and downclock it (I don't think Intel has low enough multipliers so it would have to be AMD) and you could have equivalent performance and heat dissapation. (a 300mhz mobile xp stands a good chance of being able to run without a heatsink)
 
Zap

Zap

Elite Member
Oct 13, 1999
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IIRC there was only one VIA C3 that can run w/o a fan and that was the 800MHz Ezra core (there was also a Samuel 2 core at that speed). There were some platform CPUs that ran w/o fan, the "Eden" mini-ITX boards at around 600MHz. Besides those two, they are all rated to run with a fan/heatsink - says so right on top of the core.

There were some special circumstances for that video, primarily the ambient temperature was really low.

Regardless of their requirements, I've been able to run some of them passive by using larger heatsinks (such as the older Zalman units).

The C3 chips used socket 370.
 
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lyssword

Diamond Member
Dec 15, 2005
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when I had celeron 667 it ran for like 3 hrs without fan before everything started to b really slow and I smelled silicon melting :p but it was ok after I turned on the fan again
 
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