Intel

Intel SL6BY Pentium II 266 MHz CPU Processor

1.0 (1 reviews)

Classic Computing: Intel PII 266 MHz CPU Relive the early days of personal computing with the Intel PII 266 MHz CPU. This classic processor, featuring 512k cache and designed for Slot 1, is a piece of computing history. Ideal for retro computing enthusiasts and collectors. Specifications: Pr...

$7.50*
Check availability

*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Classic Computing: Intel PII 266 MHz CPU

Relive the early days of personal computing with the Intel PII 266 MHz CPU. This classic processor, featuring 512k cache and designed for Slot 1, is a piece of computing history. Ideal for retro computing enthusiasts and collectors.

Specifications:

  • Processor: Intel PII
  • Clock Speed: 266 MHz
  • Cache: 512k
  • Socket Type: Slot 1
  • Model: SL2HC

Key Features

Server CPU, Intel 94-96, PHILLIPPINES, SECC 3.00

Enterprise Class Server CPU, SLOT 1 CPU, BUS FREQ: 66MHZ.

266mhz CPU KLAMATH PROCESSOR CORE, TAGRAM T6

Intel Pentium II-S, 266MHZ, 512KB L2 CHACHE, PN:80522PX266512

INTEL PN:80522PX266512

Specifications

Processor Name
Pentium II
Model Number
SL6BY
Clock Speed
266 MHz
Processor Core
Klamath
L2 Cache
512KB
CPU Type
Server CPU, Enterprise Class Server CPU
Socket Type
SLOT 1 CPU
Bus Frequency
66MHz
Manufacturing Origin
PHILLIPPINES
Process Technology
SECC 3.00
Part Number
80522PX266512

Pros & Cons

👍 Pros

  • Features a 266 MHz Klamath Processor Core, representing an early and notable generation of Intel Pentium II CPUs
  • Equipped with a 512KB L2 Cache, which enhances processing efficiency for tasks compatible with its architecture
  • Designed as an Enterprise Class Server CPU, indicating its intended reliability and performance for server environments
  • Utilizes the SLOT 1 CPU interface, a distinct form factor from its era, offering specific system upgrade paths
  • The "TAGRAM T6" designation might indicate specific manufacturing or revision details for enthusiasts

👎 Cons

  • The 266 MHz clock speed is extremely low by modern standards, rendering it unsuitable for contemporary computing tasks
  • Operates on a 66MHz bus frequency, which is significantly slower than current CPU bus speeds, limiting data throughput
  • Designed for the SLOT 1 interface, making it compatible only with very old motherboards and limiting modern upgrade options
  • As a Pentium II CPU, it is a legacy component, lacking modern instruction sets, security features, and power efficiency
  • The 512KB L2 cache, while notable for its time, is minuscule compared to today's multi-megabyte caches, affecting performance

Frequently Asked Questions

The Intel SL6BY Pentium II processor operates at a clock speed of 266 MHz.
This processor is equipped with a 512KB L2 cache, which assists in speeding up data access.
It is identified as an Enterprise Class Server CPU, indicating its design for server environments.
The bus frequency for this processor is 66MHz, which is the speed at which it communicates with the rest of the system.
The Intel SL6BY Pentium II uses the SLOT 1 CPU interface, a cartridge-based design prevalent in its generation.