Intel Pentium III 400 - 80525PZ400512

Specifications

Model	Freq.	L2 cache	Multi- processing	TDP	Features
Intel Pentium III (Katmai) family, Slot 1
Intel Pentium III 400 MHz (DC1EC501A400)	400 MHz	512 KB	2		MMX, SSE
Intel Pentium III 450 MHz (80525PY450512)	450 MHz	512 KB	2		MMX, SSE
Intel Pentium III 500 MHz (80525PY500512)	500 MHz	512 KB	2		MMX, SSE
Intel Pentium III 533B	533 MHz	512 KB	2		MMX, SSE
Intel Pentium III 550 MHz (80525PY550512)	550 MHz	512 KB	2		MMX, SSE
Intel Pentium III 600 MHz (80525PY600512)	600 MHz	512 KB	2		MMX, SSE
Intel Pentium III 600B	600 MHz	512 KB	2		MMX, SSE
Other families, P6 micro-architecture, Slot 1
Intel Celeron 366 MHz (80524RX366128)	366 MHz	128 KB			MMX, SSE
Intel Celeron 400 MHz (80524RX400128)	400 MHz	128 KB			MMX, SSE
Intel Pentium II 400 MHz (80523PY400512PE SECC2)	400 MHz	512 KB	2	24.3 Watt	MMX, SSE
Intel Celeron 433 MHz (80524RX433128)	433 MHz	128 KB			MMX, SSE
Intel Pentium II 450 MHz (80523PY450512)	450 MHz	512 KB	2	27.1 Watt	MMX, SSE
Intel Pentium II 450 MHz (80523PY450512PE SECC2)	450 MHz	512 KB	2	27.1 Watt	MMX, SSE
Intel Pentium II 450 MHz (80523PY450512PE)	450 MHz	512 KB	2	27.1 Watt	MMX, SSE
Intel Pentium III 866 MHz (80526PZ866256)	866 MHz	256 KB	2		MMX, SSE
Intel Pentium III 933 MHz (80526PZ933256)	933 MHz	256 KB	2		MMX, SSE
Intel Pentium III 1 GHz (80526PY1000256)	1 GHz	256 KB	2		MMX, SSE
Intel Pentium III 1BGHz (Slot 1)	1 GHz	256 KB	2		MMX, SSE

Pictures (3)

Engineering sample - top view
400 MHz (133 MHz bus) 512 KB L2 cache Single Edge Contact cartridge 2 (slot 1) Produced later than the DC1EC501A400 CPU this engineering sample has very significant feature - 133 MHz front side. Increasing front side bus speed from 100 MHz to 133 MHz allowed to increase processor performance by 5% - 10% on average. It's worth to note that this processor was manufactured almost 11 months before the release of first Katmai processors with 133 MHz bus speed.
Engineering sample - front view
400 MHz (133 MHz bus) 512 KB L2 cache Single Edge Contact cartridge 2 (slot 1) Engineering sample
Engineering sample - back view
400 MHz (133 MHz bus) 512 KB L2 cache Single Edge Contact cartridge 2 (slot 1) Engineering sample

Benchmarks

Compare results with tested CPUs from one of the following families: Athlon C3 Celeron Duron Pentium III To compare benchmark results with all other microprocessors please
Tested processor
CPU ID:	0672h
CPU vendor string:	GenuineIntel
Integer performance Part number   Result Intel Celeron 466MHz FV80524RX466128  ?  116.1% Intel Pentium III 450MHz 80525PY450512  ?  112.5% Intel Celeron 433MHz CELERON 433  ?  108.5% Intel Celeron 433MHz CELERON 433  ?  108.4% Intel Celeron 433MHz BX80524P433128  ?  107.8% Intel Celeron 400MHz CELERON 400  ?  100% Intel Pentium III 400MHz 80525PZ400512  ?  100% Intel Celeron 400MHz FV80524RX400128  ?  99.4% Intel Pentium III 400MHz DC1EC501A400  ?  99.2% Intel Celeron 366MHz CELERON 366  ?  91.6% Intel Celeron 366MHz FV80524RX366128  ?  91% VIA C3 933MHz C3-933AMHZ  ?  86.9%
Floating Point performance Part number   Result Intel Celeron 466MHz FV80524RX466128  ?  116.1% Intel Pentium III 450MHz 80525PY450512  ?  112.6% Intel Pentium III 450MHz 80525PY450512  ?  112.4% Intel Celeron 433MHz CELERON 433  ?  108.4% Intel Celeron 433MHz BX80524P433128  ?  107.9% Intel Celeron 400MHz CELERON 400  ?  100% Intel Pentium III 400MHz 80525PZ400512  ?  100% Intel Celeron 400MHz FV80524RX400128  ?  99.4% Intel Celeron 366MHz CELERON 366  ?  91.6% Intel Celeron 366MHz FV80524RX366128  ?  91% Intel Celeron 333MHz CELERON 333  ?  83.1% Intel Celeron 333MHz FV80524RX333128  ?  82.9%
MMX / SSE / SSE2 performance Part number   Result AMD Athlon 550MHz AMD-K7550 (ES)  ?  143.1% Intel Pentium III 550E (Socket 370)  ?  137.7% Intel Pentium III 500MHz 80525PY500512  ?  125.2% Intel Pentium III 450MHz 80525PY450512  ?  112.6% Intel Pentium III 450MHz 80525PY450512  ?  112.6% Intel Pentium III 400MHz 80525PZ400512  ?  100% Intel Pentium III 400MHz DC1EC501A400  ?  99.3% VIA C3 933MHz C3-933AMHZ  ?  74.9% Intel Celeron 533MHz FV80524RX533128  ?  66.4% Intel Celeron 500MHz FV80524RX500128  ?  62.2% Intel Celeron 500MHz FV80524RX500128  ?  62.2%

CPU ID

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