SL7Z8 (Intel Pentium 4 640)

General information
TypeCPU / Microprocessor
FamilyIntel Pentium 4
Processor number  ? 640
Part numberJM80547PG0882MM
BX80547PG3200F
BX80547PG3200FT
Processor markings3.20GHZ/2M/800/04A
Frequency (GHz)3.2
Bus speed (MHz)  ? 800
Clock multiplier  ? 16
Package type775-land FC-LGA4
Socket typeSocket 775 (LGA775)
 
Architecture / Microarchitecture / Other
CPUID0F43h
Core steppingN0
Processor corePrescott
Manufacturing technology (micron)0.09
L2 cache size (KB)  ? 2048
FeaturesEM64T technology  ? 
Enhanced SpeedStep technology  ? 
Execute disable bit  ? 
Extended Halt state
Hyper-Threading technology
Core voltage (V)  ? 1.25 - 1.388
Case temperature (°C)  ? 67.7
Hyper-ThreadingY
 
Notes on sSpec SL7Z8
  • This part also ships as a boxed processor with an unattached fan heatsink.
  • Microprocessors with this S-Spec have multiple VIDs.
  • Thise part will only operate at the specified core to bus frequency ratio and lower.
 
Related Links
S-Spec chart
 
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Related S-Specs
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Same socket
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3 year old Pentium 4 640 running like a champ

2009-07-12 12:16:52
Posted by: Danny C

I'm loving my old Pentium 4 640, as it overclocks past 3.4 Ghz and down clocks to 2.67 Ghz like a champ with my new Thermaltake V1 Heat sink, although, voltage is a concern, since one must push it past 1.462 V to get it to work at higher clock speeds, and i have already tested my Pentium 4 at 4.1 Ghz and at 2.67 Ghz stable

Overheating

2009-05-27 03:02:47
Posted by: Mike

Similar to Bambooz, my SL7Z8 is overheating beyond being usable after 2 years of factory-clock usage

 

2007-10-12 15:49:51
Posted by: Bambooz

i've got 2 of those SL7Z8 CPUs. both seem to be defective (the only thing they do is get hot ;)).
any suggestions what to do with it to get them working again? :/

to post something useful, i've added a picture ;)

 

stepping

2006-11-12 06:52:27
Posted by: david

how to change stepping overclock it!!

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