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Intel Pentium III 667 - RB80526PZ667256 (BX80526F667256 / BX80526F667256E)

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Intel Pentium III 667 MHz specifications

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General information
TypeCPU / Microprocessor
Market segmentDesktop
Family
Intel Pentium III
CPU part numbers
  • RB80526PZ667256 is an OEM/tray microprocessor
  • BX80526F667256 is a boxed microprocessor
  • BX80526F667256E is a boxed microprocessor
Frequency  ? 667 MHz
Bus speed  ? 133 MHz
Clock multiplier  ? 5
Package370-pin Flip-Chip Pin Grid Array (FC-PGA)
1.95" x 1.95" (4.95 cm x 4.95 cm)
SocketSocket 370 / PGA370
Introduction dateOct 25, 1999
Price at introduction$605
S-spec numbers
Part number ES/QS processors
  QM50 QP13 QS20 QS79
BX80526F667256    
BX80526F667256E    
RB80526PZ667256++++
 
Part number Production processors
  SL3T2 SL3VK SL3XW SL45X SL4CJ SL5B6
BX80526F667256+ ++  
BX80526F667256E++    
RB80526PZ667256+++ ++
Architecture / Microarchitecture
MicroarchitectureP6
Processor core  ? Coppermine
Core steppings  ? cA2 (QM50, SL3T2, SL3VK)
cB0 (QP13, QS20, QS79, SL3XW, SL45X)
cC0 (SL4CJ)
cD0 (SL5B6)
CPUIDs681 (SL3T2, SL3VK)
683 (QP13, QS20, SL3XW, SL45X)
686 (SL4CJ)
Manufacturing process0.18 micron
28 million transistors
Die104.6mm2 (CPUID 0683h)
90mm2 (CPUID 0686h)
Data width32 bit
Data bus width64 bit
The number of CPU cores1
The number of threads1
Floating Point UnitIntegrated
Level 1 cache size  ? 16 KB 4-way set associative instruction cache
16 KB 4-way set associative data cache
Level 2 cache size  ? Full-speed integrated 8-way set associative 256 KB
MultiprocessingUp to 2 processors
Extensions and Technologies
  • MMX instructions
  • SSE / Streaming SIMD Extensions
Low power features
  • AutoHALT state  ? 
  • Stop Grant state  ? 
  • Sleep state  ? 
  • Deep Sleep state  ? 
  • System Management Mode
Electrical / Thermal parameters
Min/Recommended/Max V core1.57V / 1.65V / 1.69V
1.62V / 1.7V / 1.74V
Minimum/Maximum operating temperature  ? 0°C - 82°C
Maximum power dissipation  ? 22.61 Watt (1.7V core)
Thermal Design Power  ? 17.5 Watt (CPUID 0686h)
Notes on Intel Pentium III 667 MHz
  • The processor is usually marked as 667/256/133/1.65V or 667/256/133/1.7V, where the last number specifies processor's core voltage. If the processor is marked with RB80526PZ667256 part number then use processor specification number to identify processor's core voltage
  • Stepping cA2 CPUs for Socket 370 were not validated for dual-processing

Detailed side-by-side comparison

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Pentium III 667 MHz Overclocking

Sorry, overclocking information for this CPU is not available at this time.

Intel Pentium III 667 MHz Benchmarks and Performance evaluation

Compare Intel RB80526PZ667256 benchmark results with all tested CPUs from one of the following families:

You can also compare this model with other tested CPUs in our

For averaged performance in integer, floating-point, SIMD and memory-intensive applications please see the next section.


Integer, Floating-Point, SIMD and Memory performance

The graphs below show up to 10 microprocessors with approximately the same level of performance in integer (CPU), floating-point (FPU), SIMD and memory benchmarks. All processors were not overclocked, and were tested at a nominal frequency, with a stock heatsink and default BIOS settings. Click on the '?' mark next to each model name to see specifications of that model, and details of the test platform.

Benchmarked processor:

CPU ID:0683h
CPU vendor string:GenuineIntel

Integer performance

Model / Part number   Result  
Intel Pentium III 866MHz RB80526PZ866256
130.2%  ? 
Intel Pentium III 800EB (Socket 370)
120.1%  ? 
AMD Athlon 650MHz AMD-K7650MTR51B C
116.8%  ? 
AMD Athlon 600MHz AMD-K7600MTR51B C
107.8%  ? 
Intel Pentium III 700MHz RB80526PY700256
105%  ? 
Intel Pentium III 667MHz RB80526PZ667256
100%  ? 
AMD Athlon 550MHz AMD-K7550MTR51B C
98.8%  ? 
AMD Athlon 550MHz AMD-K7550 (ES)
98.5%  ? 
Intel Pentium III 600E (Socket 370)
89.9%  ? 
Intel Pentium III 550E (Socket 370)
82.7%  ? 
Intel Celeron 533MHz FV80524RX533128
79.8%  ? 

Floating Point performance

Model / Part number   Result  
Intel Pentium III 800EB (Socket 370)
120%  ? 
AMD Athlon 650MHz AMD-K7650MTR51B C
113.4%  ? 
Intel Pentium III 700MHz RB80526PY700256
105%  ? 
AMD Athlon 600MHz K7600 (ES)
104.7%  ? 
AMD Athlon 600MHz AMD-K7600MTR51B C
104.6%  ? 
Intel Pentium III 667MHz RB80526PZ667256
100%  ? 
AMD Athlon 550MHz AMD-K7550MTR51B C
95.9%  ? 
AMD Athlon 550MHz AMD-K7550 (ES)
95.6%  ? 
Intel Pentium III 600E (Socket 370)
89.9%  ? 
Intel Pentium III 550E (Socket 370)
82.5%  ? 
Intel Celeron 533MHz FV80524RX533128
79.7%  ? 

MMX / SSE / SSE2 performance

Model / Part number   Result  
Intel Pentium III 866MHz RB80526PZ866256
130.2%  ? 
Intel Pentium III 800EB (Socket 370)
120.1%  ? 
AMD Athlon 750MHz A0750APT3B
118.1%  ? 
Intel Pentium III 700MHz RB80526PY700256
105%  ? 
AMD Athlon 650MHz AMD-K7650MTR51B C
101.9%  ? 
Intel Pentium III 667MHz RB80526PZ667256
100%  ? 
AMD Athlon 600MHz K7600 (ES)
94.1%  ? 
AMD Athlon 600MHz AMD-K7600MTR51B C
94.1%  ? 
AMD Athlon 600MHz AMD-K7600MTR51B A
93.9%  ? 
Intel Pentium III 600EB (Socket 370)
89.9%  ? 
Intel Pentium III 600E (Socket 370)
89.9%  ? 

CPU ID information for the Pentium III 667 MHz

Detailed characteristics of processor's internals, including x86 instruction set extensions and individual instructions, high- and low-level technologies, are listed below. This list was acquired from an actual Intel Pentium 3 667 processor with the help of the x86 CPUID instruction. Any discrepancies between CPUID features and official specifications are likely due to some features being disabled in BIOS, or due to a bug in our CPUID decoding algorithm. Different steppings of Intel processors may also have slightly different features.

Search or browse all public submissions in our CPUID database.

Use our CPU identification tool to check features of your processor.

Submission details
Manufacturer:IntelMeasured frequency:666 MHz
CPU Family:Pentium 3Comment:
Processor Number:667 
Part number (supplied):RB80526PZ667256Submitted by:Neon
Part number (guessed):
RB80526PZ667256
Submitted on:
S-Spec Number:SL3XWCWID version:0.2
General information
Vendor:GenuineIntel
Processor type:Original OEM Processor
CPUID signature:683
Family: 6 (06h)
Model: 8 (08h)
Stepping: 3 (03h)
TLB/Cache details:Data TLB: 4-KB Pages, 4-way set associative, 64 entries
Data TLB: 4-MB Pages, 4-way set associative, 8 entries
Instruction TLB: 4-KB Pages, 4-way set associative, 32 entries
Instruction TLB: 4-MB Pages, fully associative, 2 entries

Cache details
Cache: L1 data L1 instruction L2
Size: 16 KB 16 KB 256 KB
Associativity: 4-way set
associative		 4-way set
associative		 8-way set
associative
Line size: 32 bytes 32 bytes 32 bytes

Supported instructions
Instruction set extensionsAdditional instructions
MMX CMOV
SSE CMPXCHG8B
  FXSAVE/FXRSTORE
  SYSENTER/SYSEXIT

Integrated features and technologies
Major featuresOther features
On-chip Floating Point Unit 36-bit page-size extensions
  Debugging extensions
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Model-specific registers
  Page attribute table
  Page global extension
  Page-size extensions (4MB pages)
  Physical address extensions
  Processor serial number
  Time stamp counter
  Virtual 8086-mode enhancements

CPUs, related to Intel Pentium III RB80526PZ667256 (667 MHz)

The list of related CPUs does not include all models. For the complete list, please see the related "P6" processors for socket 370 page.

Model Frequency L2
cache		 Multi-
processing		 TDP Features  
Intel Pentium III (Coppermine) family, Socket 370
   Pentium III RB80526PZ667256 (667 MHz)667 MHz256 KB217.5W 
   Pentium III RB80526PY750256 (750 MHz)750 MHz256 KB223.2W>
   Pentium III 800EB (Socket 370)800 MHz256 KB224.5W>
   Pentium III RB80526PY800256 (800 MHz)800 MHz256 KB224.5W>
   Pentium III RB80526PY850256 (850 MHz)850 MHz256 KB225.7W>
   Pentium III RB80526PZ866256 (866 MHz)866 MHz256 KB226.1W>
   Pentium III RK80526PZ866256 (866 MHz)866 MHz256 KB229.5W>
   Pentium III RB80526PY900256 (900 MHz)900 MHz256 KB226.7W>
   Pentium III RB80526PZ933256 (933 MHz)933 MHz256 KB227.5W>
   Pentium III RK80526PZ933256 (933 MHz)933 MHz256 KB231.5W>
   Pentium III 1BGHz (Socket 370)1 GHz256 KB229.6W>
   Pentium III 1BGHz (Socket 370)1 GHz256 KB233.9W>
   Pentium III RB80526PY001256 (1 GHz)1 GHz256 KB229W>
   Pentium III RB80526PY005256 (1.1 GHz)1.1 GHz256 KB233W>
   Pentium III RK80526PZ006256 (1.13 GHz)1.13 GHz256 KB237.5W>
Intel Pentium III (Coppermine) family, P6 micro-architecture, Other sockets
   Pentium III 80526PZ933256 (933 MHz)933 MHz256 KB2 >
   Pentium III 1BGHz (Slot 1)1 GHz256 KB2 >
   Pentium III 80526PY1000256 (1 GHz)1 GHz256 KB2 >
Other families, P6 micro-architecture, Socket 370
   Celeron RK80530RY013256 (1.3 GHz)1.3 GHz256 KB  >
   Pentium III RK80530PZ014256 (1.33 GHz)1.33 GHz256 KB1 >
   Celeron RK80530RY017256 (1.4 GHz)1.4 GHz256 KB  >
   Pentium III RK80530PZ017256 (1.4 GHz)1.4 GHz256 KB1 >
   Pentium III 1.4GHz-S1.4 GHz512 KB2 >
   Celeron RK80530RY021256 (1.5 GHz)1.5 GHz256 KB  >
 • Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)
 • Background color of specs and features indicate whether they are better or worse than similar spec/feature of the Pentium III RB80526PZ667256 (667 MHz)
 • Click on the >  icon to compare any CPU in the table with the Intel Pentium III RB80526PZ667256 (667 MHz) (Javascript required).

Pictures (6)

667/256/133/1.65V

667 MHz
133 MHz bus
370-pin flip-chip PGA		 Intel Pentium III 667 - RB80526PZ667256 (BX80526F667256 / BX80526F667256E)
Engineering sample

667 MHz
133 MHz bus
370-pin flip-chip PGA

Engineering sample		 Intel Pentium III 667 - RB80526PZ667256 (BX80526F667256 / BX80526F667256E)
CPU Collector
2009-11-18 04:45:05
Posted by: dvthanh2000@yahoo.com

  		CPU Collector
Cpu Collector
2009-12-08 09:51:51
Posted by: dvthanh2000@yahoo.com

  		Cpu Collector
 
2010-07-04 16:35:42
Posted by: Fuynfactory

  		 
SL3XW
2015-06-07 10:33:21
Posted by: Meft

  		SL3XW
Comments (2)

You're welcome to post suggestions, corrections, your own personal Intel Pentium III 667 MHz review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.

BX80526F667256

2009-06-04 09:22:41
Posted by: D-code

Had it! Year 2000. Payed aprox. 250$ in Poland.
OC'd to 800MHz with a 'Blue Orb' fan. Hot core.
Installed on to a ABIT SL6 +Voodoo3000 +SBLive! combo.
Love of my youth! ;]

 

2017-12-15 13:47:14
Posted by: satheesh

that was the processor used in my very first Pc in 1999. intel 667mhz, Intel 815E mob 64mb ram 20gb onboard 8mb graphics.all for almost 1000$. it was heaven. used to have a blast showing to all my friends who used drop by . time jus flies away

Last modified: 25 Nov 2021
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