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Old 23rd August 2002, 09:24   #1
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Default Voltage lowering

Since i placed a low profile fan (Pabst 80mm 2600 rpm) on my HS (pabst 6045 + adapter) i was not happy with the temps of the CPU (1600XP) running at stock speed. The temps were 48C - 49C (normal use).
I was sure the default voltage was 1.75V, but to make absolute sure i checked my favourite AMD lookup page. ... as i misread the info in the thermal tables i thought the CPU should work at 1.5V. So i rebooted and wanted to choose 1.5V, but the lowest i could choose was 1.55V ... allwright, F10 ... the box started nicely, no hickups whatsoever ... and it has been running at this voltage for 3 days now ! ... temps dropped 5 C (attach). 43C (normal use) is great for a low profile fan.
As i read this silencing article this morning i think it's really worthwile to unlock the CPU, keep stock speed ... but at higher FSB. Excellent CPU power + low voltage = silence = happy me.

This weekend i gonna try some voltage lowering on my other box, an XP1800 agoia
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Old 23rd August 2002, 09:39   #2
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Yeah, yeah,
pic with load temps
47C in an Aopen with no casefans ... looks OK to me.
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Old 23rd August 2002, 10:50   #3
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I'll try this out on my p4 just before mm7 when I put the alfa with papst fan back on.
@ 1.3 volts or so
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Old 23rd August 2002, 15:00   #4
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HWFaq ownz you all again, check added links from yesterday
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Old 23rd August 2002, 22:54   #5
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Doesn't work with XP1800+ ... 1.7V is the lowest stable there.
Wonder why it works on the XP1600+ and not on this one.
Or it is an error on the mobo.
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Old 24th August 2002, 16:30   #6
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I can't choose anything lower then 1.5 volt for my P4 cpu
but temps are allright, even @ 1.7v i dont get above 50 , which is quite nice I think (alpha + ngm)
 
Old 25th August 2002, 08:52   #7
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I accidentely did the same thing a couple of weeks ago: I installed my new 1.2ghz duron, and in the bios (Abit - softmenu)
i saw the core voltage at 1,75. Woheey, and turned it to 1,55. Then i started overclocking. Did about 1260mhz, and then it crached. Temps were..eurm let me think.. something around 35C with my $2 heatsink/fan
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