Intel SL43E Pentium III 600MHz Slot 1 CPU BX80526PY600256 Coppermine 256KB

Intel SL43E Pentium III 600MHz Slot 1 CPU BX80526PY600256 Coppermine 256KB

The Intel SL43E is a Pentium III 600MHz processor built on the Coppermine core, packaged in Intel's SECC2 (Single Edge Contact Cartridge 2) form factor for Slot 1 motherboards. It runs at 600MHz with a 100MHz front-side bus, carries 256KB of on-die L2 cache, and operates at 1.65V core voltage. The Coppermine generation, released in late 1999, moved L2 cache on-die and reduced it to 256KB running at full CPU speed — a significant performance improvement over the earlier Katmai core's off-die half-speed cache.

Specifications & What's Included

• Processor: Intel Pentium III
• S-Spec: SL43E
• OEM Part Number: BX80526PY600256
• Processor Core: Coppermine
• Clock Speed: 600 MHz
• Front Side Bus (FSB): 100 MHz
• L2 Cache: 256 KB (on-die, full-speed)
• Core Voltage: 1.65V
• Package Type: SECC2 (Single Edge Contact Cartridge 2)
• Socket / Slot Type: Slot 1
• Core Stepping: cB0
• CPUID: 0683h
• Processor Markings: 600E/256/100/1.65V S1
• ECC Support: ECC
• Manufactured: 2000, Malaysia
• Included: Processor only (no heatsink/fan)

Applications

The Pentium III Slot 1 processors are used in late-1990s to early-2000s desktop and workstation systems built around Intel's 440BX, 440GX, i820, and compatible VIA chipset motherboards. Slot 1 was Intel's primary desktop CPU interface from 1997 through roughly 2000, found in systems like the Dell Dimension, HP Vectra, Compaq Deskpro, and a wide range of workstations and servers of that era. The 600MHz Coppermine was a capable mid-range chip in its time, and today these processors are sought for legacy system restoration, retro computing projects, and keeping older Slot 1 workstations operational. The SECC2 package is compatible with any Slot 1 socket; no Slot 1-to-Socket 370 adapter is needed for native Slot 1 boards.