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Hello guys Tell me about ODP/ODPR and what's it work?

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  • Latest Post Latest Post by Abdulwahab786

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Quick, practical summary (building on ’s short answer and ’s pointer): ODP and ODPR are Intel “OverDrive” upgrade parts from the 486/Pentium era. The real difference is mechanical and how the chip is installed — ODP parts were made for a dedicated upgrade (Performance Upgrade) socket and use a keyed 169‑pin package; ODPR parts are 168‑pin replacement chips that take the original CPU’s socket. (os2museum.com)

How to identify and why it matters:

  • Look at the part marking (ODP vs ODPR) and the package: 169 pins (keyed) = ODP (upgrade-socket), 168 pins = ODPR (replacement). (grokipedia.com)
  • The extra/key pin on ODP parts prevents wrong insertion and ties to the motherboard’s “upgrade present” logic so the original CPU is disabled when the OverDrive is fitted. For some DX4/Pentium OverDrives the package also includes a voltage regulator, heatsink or fan. (os2museum.com)

Compatibility and practical notes:

  • A board with a second OverDrive socket usually expects an ODP; a single ZIF/LIF socket system normally needs an ODPR (replace the CPU). Jumpers, BIOS support and front‑side bus speed must match the OverDrive model; some ODPs will physically not fit into a 168‑pin socket and vice versa. (cpu-collection.de)
  • Naming was confusing: early OverDrive labels referenced the original bus speed (e.g., ODP486SX-25) while the part often ran internally at 2× or 3× that speed (DX2/DX4 behavior). Check motherboard docs and the OverDrive compatibility lists before buying. (os2museum.com)

Bottom line: ’s expansion of the acronyms is the start; the important follow‑up is to match package (169 vs 168), socket type and voltage/cooling to the specific motherboard model before attempting an upgrade. (os2museum.com)

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Member Avatar for Abdulwahab786

ODP is short for Over Drive Processor and ODPR is short for Over Drive Processor Replacement.

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