Intel P2 (incl. Celeron and Xeon)
| General Details | Name |
Celeron, Celeron A (Low End) Pentium II (Mid Range) Pentium II PE (Mobile) Xeon (High End) |
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| Codename |
A80522, Klamath (0.28 µm) A80523, Deschutes (0.25 µm) Tonga (0.25 µm mobile) Covington (no On-Die L2 Cache) Mendocino (128 KB On-Die L2 Cache) Dixon (256 KB On-Die L2 Cache) |
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| Family/Generation | 80686, 6th Generation, MMX | ||
| Vendor | Intel | ||
| Manufacturer | Intel | ||
| First Introduction |
Feb 7, 1997 (super-cooled 400 MHz Pentium II 0.35 µm demo) May 7, 1997 (233, 266, and 300 MHz Pentium II) Jan 26, 1998 (333 MHz Pentium II) Apr 2, 1998 (233 and 266 MHz Mobile Pentium II) Apr 15, 1998 (350 and 400 MHz Pentium II, 266 MHz Celeron) Jun 8, 1998 (300 MHz Celeron) Jun 29, 1998 (400 MHz 512KB L2 Xeon) Aug 24, 1998 (450 MHz Pentium II, 300 and 333 MHz Celeron A) Sep 9, 1998 (300 MHz Mobile Pentium II) Oct 6, 1998 (450 MHz 512 KB L2 Xeon) Jan 4, 1999 (366 and 400 MHz Celeron A) Jan 4, 1999 (366 and 400 MHz Celeron A PPGA) Jan 5, 1999 (450 MHz 1MB/2MB L2 Xeon) Jan 25, 1999 (266..366 MHz Mobile Pentium II PE) Jan 25, 1999 (266..366 MHz Mobile Pentium II PE BGA) Jan 25, 1999 (266 and 300 MHz Mobile Celeron A BGA) Mar 22, 1999 (433 MHz Celeron A) Mar 22, 1999 (433 MHz Celeron A PPGA) Apr 5, 1999 (333 MHz Mobile Celeron A BGA) Apr 26, 1999 (466 MHz Celeron A PPGA) May 17, 1999 (366 MHz Mobile Celeron A BGA and µPGA) Jun 14, 1999 (400 MHz Mobile Celeron A and Mobile Pentium II PE) Aug 2, 1999 (500 MHz Celeron A PPGA) Sep 15, 1999 (433 and 466 MHz Mobile Celeron A) Jan 4, 2000 (533 MHz Celeron A PPGA) |
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| Physical Details | Package Type |
528 Pin LGA (on SEC or SEP Cartridge) 615 Pin BGA 615 Pin µPGA 370 Pin PPGA (Celeron A) 242 Contact SEC or SEP Cartridge (Slot 1) 330 Contact SEC Cartridge (Slot 2) 240 Contact Mini Cartridge |
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| Package Size |
12.82 cm x 6.28 cm x 1.64 cm (SEC Cartridge Slot 1) 12.70 cm x 5.78 cm x 0.50 cm (SEP Cartridge Slot 1) 15.24 cm x 12.29 cm x 1.86 cm (SEC Cartridge Slot 2) 5.60 cm x 6.00 cm x 0.55 cm (Mini Cartridge) 3.10 cm x 3.50 cm x 0.26 cm (BGA) 3.26 cm x 3.68 cm x 0.48 cm (µPGA) 4.95 cm x 4.95 cm (PPGA) |
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| Socket or Slot |
Slot 1 (SEC or SEP Cartridge) Slot 2 (SEC Cartridge) BGA µPGA Mini Cartridge Connector Mobile Module Connector 1 (MMC-1) Mobile Module Connector 2 (MMC-2) PGA370 (PPGA) |
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| Transistors |
7,500,000 (includes 2x 16 KB L1 Cache) 18,900,000 (includes 2x 16 KB L1 and 128 KB L2 Cache, mobile) 19,000,000 (includes 2x 16 KB L1 and 128 KB L2 Cache) 27,400,000 (includes 2x 16 KB L1 and 256 KB L2 Cache) |
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| Process Technology |
4M, 0.28 µm, CMOS (233..300 MHz Pentium II) 5M, 0.25 µm, CMOS (All Others) ?M, 0.18 µm, CMOS (400 MHz Mobile Celeron A) ?M, 0.18 µm, CMOS (400 MHz Mobile Pentium II PE) |
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| Die Size |
203 mm² (0.28 µm) 131 mm² (0.25 µm, no On-Die L2 Cache (P856)) 118 mm² (0.25 µm, no On-Die L2 Cache (P856.5)) 154 mm² (0.25 µm, 128 KB On-Die L2 Cache) 180 mm² (0.25 µm, 256 KB On-Die L2 Cache) ??? mm² (0.18 µm, 128 KB On-Die L2 Cache) ??? mm² (0.18 µm, 256 KB On-Die L2 Cache) |
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| Electrical Details | Split Voltage | Yes (automatically determined via VID Pins) | |
| Core Voltage |
2.8 V (0.28 µm) 2.0 V (0.25 µm) 1.9 V (0.25 µm Mobile) 1.7 V (0.25 µm Mobile) 1.6 V (0.25 µm Mobile) 1.5 V (0.25 and 0.18 µm Mobile) |
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| L2 Voltage |
3.3 V (Slot 1 and Off-Die Mobile) 2.5 V (Slot 2) |
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| I/O Voltage |
3.3 V 2.5 V (Mobile) |
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| Typical Power |
~11 W (0.25 µm Celeron @ 266 MHz) ~12 W (0.25 µm Celeron @ 300 MHz) ~11 W (0.25 µm Celeron @ 266 MHz, PPGA) ~12 W (0.25 µm Celeron @ 300 MHz, PPGA) ~12 W (0.25 µm Celeron A @ 300 MHz) ~14 W (0.25 µm Celeron A @ 333 MHz) ~15 W (0.25 µm Celeron A @ 366 MHz) ~16 W (0.25 µm Celeron A @ 400 MHz) ~16 W (0.25 µm Celeron A @ 433 MHz) ~12 W (0.25 µm Celeron A @ 300 MHz, PPGA) ~13 W (0.25 µm Celeron A @ 333 MHz, PPGA) ~14 W (0.25 µm Celeron A @ 366 MHz, PPGA) ~15 W (0.25 µm Celeron A @ 400 MHz, PPGA) ~16 W (0.25 µm Celeron A @ 433 MHz, PPGA) ~17 W (0.25 µm Celeron A @ 466 MHz, PPGA) ~18 W (0.25 µm Celeron A @ 500 MHz, PPGA) ~19 W (0.25 µm Celeron A @ 533 MHz, PPGA) ~6 W (0.25 µm Mobile Celeron A @ 266 MHz, BGA, low voltage) ~7 W (0.25 µm Mobile Celeron A @ 266 MHz, BGA) ~8 W (0.25 µm Mobile Celeron A @ 300 MHz, BGA) ~8 W (0.25 µm Mobile Celeron A @ 333 MHz, BGA) ~9 W (0.25 µm Mobile Celeron A @ 366 MHz, BGA) ~9 W (0.25 µm Mobile Celeron A @ 400 MHz, BGA) ~13 W (0.25 µm Mobile Celeron A @ 433 MHz, BGA) ~14 W (0.25 µm Mobile Celeron A @ 466 MHz, BGA) ~7 W (0.18 µm Mobile Celeron A @ 400 MHz, BGA) ~23 W (0.28 µm @ 233 MHz Pentium II) ~25 W (0.28 µm @ 266 MHz Pentium II) ~28 W (0.28 µm @ 300 MHz Pentium II) ~11 W (0.25 µm @ 266 MHz Pentium II) ~12 W (0.25 µm @ 300 MHz Pentium II) ~14 W (0.25 µm @ 333 MHz Pentium II) ~20 W (0.25 µm @ 350 MHz Pentium II) ~22 W (0.25 µm @ 400 MHz Pentium II) ~24 W (0.25 µm @ 450 MHz Pentium II) ~7 W (0.25 µm @ 233 MHz, Mobile Pentium II) ~8 W (0.25 µm @ 266 MHz, Mobile Pentium II) ~9 W (0.25 µm @ 300 MHz, Mobile Pentium II) ~7 W (0.25 µm @ 266 MHz, Mobile Pentium II PE, BGA) ~8 W (0.25 µm @ 300 MHz, Mobile Pentium II PE, BGA) ~9 W (0.25 µm @ 333 MHz, Mobile Pentium II PE, BGA) ~10 W (0.25 µm @ 366 MHz, Mobile Pentium II PE, BGA) ~7 W (0.18 µm @ 400 MHz, Mobile Pentium II PE, BGA) ~20 W (0.25 µm @ 400 MHz Xeon, 512 KB L2 Cache) ~25 W (0.25 µm @ 400 MHz, Xeon, 1 MB L2 Cache) ~23 W (0.25 µm @ 450 MHz, Xeon, 512 KB L2 Cache) ~29 W (0.25 µm @ 450 MHz, Xeon, 1 MB L2 Cache) ~31 W (0.25 µm @ 450 MHz, Xeon, 2 MB L2 Cache) |
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| Maximum Power |
16.6 W (0.25 µm Celeron @ 266 MHz, no L2 Cache) 18.4 W (0.25 µm Celeron @ 300 MHz, no L2 Cache) 15.6 W (0.25 µm Celeron @ 266 MHz, no L2 Cache, PPGA) 17.5 W (0.25 µm Celeron @ 300 MHz, no L2 Cache, PPGA) 18.4 W (0.25 µm Celeron A @ 300 MHz) 20.2 W (0.25 µm Celeron A @ 333 MHz) 22.2 W (0.25 µm Celeron A @ 366 MHz) 24.2 W (0.25 µm Celeron A @ 400 MHz) 24.6 W (0.25 µm Celeron A @ 433 MHz) 17.5 W (0.25 µm Celeron A @ 300 MHz, PPGA) 19.4 W (0.25 µm Celeron A @ 333 MHz, PPGA) 21.4 W (0.25 µm Celeron A @ 366 MHz, PPGA) 23.4 W (0.25 µm Celeron A @ 400 MHz, PPGA) 24.1 W (0.25 µm Celeron A @ 433 MHz, PPGA) 25.6 W (0.25 µm Celeron A @ 466 MHz, PPGA) 27.0 W (0.25 µm Celeron A @ 500 MHz, PPGA) 28.3 W (0.25 µm Celeron A @ 533 MHz, PPGA) 7.9 W (0.25 µm Mobile Celeron A @ 266 MHz, BGA, low voltage) 9.8 W (0.25 µm Mobile Celeron A @ 266 MHz, BGA) 11.1 W (0.25 µm Mobile Celeron A @ 300 MHz, BGA) 11.8 W (0.25 µm Mobile Celeron A @ 333 MHz, BGA) 13.1 W (0.25 µm Mobile Celeron A @ 366 MHz, BGA) 13.8 W (0.25 µm Mobile Celeron A @ 400 MHz, BGA) 19.4 W (0.25 µm Mobile Celeron A @ 433 MHz, BGA) 20.7 W (0.25 µm Mobile Celeron A @ 466 MHz, BGA) 9.8 W (0.18 µm Mobile Celeron A @ 400 MHz, BGA) 34.8 W (0.28 µm @ 233 MHz,Pentium II) 38.2 W (0.28 µm @ 266 MHz,Pentium II) 43.0 W (0.28 µm @ 300 MHz,Pentium II) 16.8 W (0.25 µm @ 266 MHz,Pentium II) 18.7 W (0.25 µm @ 300 MHz,Pentium II) 20.6 W (0.25 µm @ 333 MHz,Pentium II) 29.5 W (0.25 µm @ 350 MHz,Pentium II) 32.7 W (0.25 µm @ 400 MHz,Pentium II) 36.4 W (0.25 µm @ 450 MHz,Pentium II) 9.0 W (0.25 µm @ 233 MHz, Mobile Pentium II) 10.3 W (0.25 µm @ 266 MHz, Mobile Pentium II) 11.6 W (0.25 µm @ 300 MHz, Mobile Pentium II) 9.8 W (0.25 µm @ 266 MHz, Mobile Pentium II PE, BGA) 11.1 W (0.25 µm @ 300 MHz, Mobile Pentium II PE, BGA) 11.8 W (0.25 µm @ 333 MHz, Mobile Pentium II PE, BGA) 13.1 W (0.25 µm @ 366 MHz, Mobile Pentium II PE, BGA) 9.8 W (0.18 µm @ 400 MHz, Mobile Pentium II PE, BGA) 30.8 W (0.25 µm @ 400 MHz, Xeon, 512 KB L2 Cache) 38.1 W (0.25 µm @ 400 MHz, Xeon, 1 MB L2 Cache) 34.5 W (0.25 µm @ 450 MHz, Xeon, 512 KB L2 Cache) 42.8 W (0.25 µm @ 450 MHz, Xeon, 1 MB L2 Cache) 46.7 W (0.25 µm @ 450 MHz, Xeon, 2 MB L2 Cache) |
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| Cooling | Required | ||
| Clock Frequencies | CPU Core Speed |
266, 300, 333, 366, 400, 433, 466, 500, 533 MHz (Celeron) 233, 266, 300 MHz (0.28 µm Pentium II) 333, 350, 400, 450 MHz (0.25 µm Pentium II) 233, 266, 300, 333, 366, 400, 433, 466 MHz (Mobile) |
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| L1 Cache Speed | 1.0x Core Speed | ||
| L2 Cache Speed |
0.5x Core Speed (Slot 1) 1.0x Core Speed (Slot 2) N/A (Celeron) 1.0x Core Speed (Celeron A) 1.0x Core Speed (Pentium II PE) |
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| External Bus Speed |
66 or 100 MHz GTL+ (Slot 1), AGTL+ (Slot 2) up to 8 Outstanding Transactions |
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| Core/Bus Ratio | 3.5x, 4.0x, 4.5x, 5.0x, 5.5x, 6.0x, 6.5x, 7.0x, 7.5x, 8.0x | ||
| Miscellaneous | usual Motherboard |
Single or Dual Processor Slot 1 (Slot 1 SEC or SEP Cartridge) Single or Dual Processor Slot 2 (Slot 2 SEC Cartridge) Socket 370 (PGA370) Proprietary Design (BGA and µmPGA) Mini Cartridge Connector Mobile Module Connector 1 (MMC-1) Mobile Module Connector 2 (MMC-2) |
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| usual Chipset |
Intel 82440FX, 82440LX, 82440EX, 82440BX, 82440ZX, 82440MX Intel 82440GX, 82450NX |
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| Pictures |
0.28 µm Pentium II Die (86 KB JPG) 0.25 µm Celeron A Die (136 KB JPG) 512 KB L2 Cache Die (C6C) (62 KB JPG) 0.28 µm Pentium II Top (121 KB JPG) and Bottom (133 KB JPG) 0.25 µm Pentium II Top (115 KB JPG) and Bottom (117 KB JPG) 0.25 µm Pentium II Top (85 KB JPG) and Bottom (96 KB JPG, fake) 0.25 µm Pentium II Top (113 KB JPG) and Bottom (125 KB JPG, and its Slot 1 SEC Cartridge Markings (30 KB JPG), a much better fake) Celeron Top (118 KB JPG) and Bottom (100 KB JPG) Celeron A Top (120 KB JPG) and Bottom (98 KB JPG) Socket 370 to Slot 1 Adapter (143 KB JPG) Slot 1 SEC Cartridge (164 KB JPG) Slot 2 SEC Cartridge (202 KB JPG) Pentium II BGA (20 KB JPG) Pentium II PE BGA (9 KB JPG) Pentium II PE µPGA (108 KB JPG) Mini Cartridge and Mobile Module (58 KB JPG) MC Pentium II Top Case (30 KB JPG) and Bottom (37 KB JPG) MC Pentium II Top PCB (30 KB JPG) and Bottom (42 KB JPG) MC Pentium II PE Top Case (35 KB JPG) and Bottom (42 KB JPG) MC Pentium II PE Top PCB (32 KB JPG) and Bottom (37 KB JPG) MMC-1 Pentium II Top (82 KB JPG) and Bottom (98 KB JPG) |
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| Processor Core | Generic Details | RISC, Out-of-order and Speculative Execution | |
| Specific Details | 20 Entry RS, 40 Entry ROB | ||
| Registers | 32 Bit Integer, 80 Bit FP, 64 Bit MM, 40 Entry RAT | ||
| Pipeline Depth | 12 (In-order) plus 2 (Out-of-order) Stages | ||
| Instruction Decoder | 3x IA-32/Cycle, 6x (4+1+1) µOPs/Cycle | ||
| Execution Units | 2x ALU/MMX, Load, Store Address, Store Data, Pipelined FPU | ||
| Execution Speed | up to 5 µOPs/Cycle | ||
| Processor Buses | Address Bus Width | 36 Bit | |
| Data Bus Width | 64 Bit, separate 64 Bit Backside L2 Cache Bus | ||
| Physical Memory | 2^36 Bit = 64 GB | ||
| Virtual Memory | 2^32 Bit = 4 GB | ||
| Logical Memory | (8,190 + 8,192) x 4 GB = 65,528 GB (~64 TB) | ||
| Multiprocessing |
N/A (Celeron, Celeron A, Mobile) SMP, 2 Processors, using integrated local APICs (Pentium II) SMP, 4 Processors, using integrated local APICs (Xeon) |
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| Power Management | HLT, STPCLK, SMI/SMM, Sleep, Deep Sleep, Quick Start (Mobile) | ||
| Processor Caches | Level 0 | N/A | |
| Level 1 | Code |
16 KB, 4-Way, 32 Byte/Line, SI, Fetch Port, Internal and External Snoop Port (for SMC/XMC), LRU |
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| Data |
16 KB, 4-Way, 32 Byte/Line, MESI, Non-blocking, Dual-ported, Snoop Port, Write Allocate, 8 Banks, LRU |
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| Level 2 | Celeron | N/A | |
| Celeron A |
On-Die, Unified, 128 KB, 4-Way, 32 Byte/Line 2x Uni-directional Bus, 4 GB cacheable |
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| Pentium II PE |
On-Die, Unified, 256 KB, 4-Way, 32 Byte/Line 2x Uni-directional Bus, 4 GB cacheable |
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| Pentium II |
Unified, 512 KB, 4-Way, 32 Byte/Line, Non-blocking, 512 MB or 4 GB cacheable, TagRAM plus 4x 32kx32 (0.28 µm), TagRAM plus 2x 64kx32 (0.25 µm) |
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| Xeon |
Unified, 512 KB..2 MB, 4-Way, 32 Byte/Line, Non-blocking, 64 GB cacheable, 222 mm² (4M, 0.35 µm, CMOS), LGA, ??? Transistors for each 512 KB/Chip |
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| Processor Buffers | Read Buffer | 4x 32 Byte | |
| Write Buffer | 32 Byte | ||
| Prefetch Queue | 32 Byte | ||
| Branch Prediction | Static | Yes | |
| Dynamic |
512 Entries, 4-Way, providing 16x 4-State Pattern Recognition |
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| RSB | 4 Entries | ||
| TLB | 4 KB Code | 32 Entries, 4-Way, LRU | |
| Large Code | 2 Entries, Full, LRU | ||
| 4 KB Data | 64 Entries, 4-Way, LRU | ||
| Large Data | 8 Entries, 4-Way, LRU | ||
| Instruction Set | Regular | IA-32 | |
| Floating Point | Integrated | ||
| Multi Media | MMX, FXSAVE/FXRSTOR (0.25 µm) | ||
| Processor Modes | Real, Protected, Virtual, Paging, SMM, Probe Mode | ||
