Intel's i486 OverDrive processors are a category of various Intel i486s that were produced with the designated purpose of being used to upgradepersonal computers. The OverDrives typically possessed qualities different from 'standard' i486s with the same speed steppings. Those included built-in voltage regulators, different pin-outs, write-back cache instead of write-through cache, built-in heatsinks, and fanless operation — features that made them more able to work where an ordinary edition of a particular model would not.

It is based on the Intel486 DX2 microprocessor technology.^[1] Each 486 Overdrive typically came in two versions, ODP and ODPR variants.^[2] The ODPR chips had 168 pins and functioned as complete swap-out replacements for existing chips, whereas the ODP chips had an extra 169th pin, and were used for inserting into the 169-pin 487SX socket available in 486SX motherboards, which would disable the existing 486SX CPU. ODP chips will not work in Pre-Socket 1 486 boards (168-pin, a.k.a. "Socket 0", the original 486DX socket) due to the extra pin. The ODP and ODPR labeling can be found in the CPU's model number(i.e.: DX2ODPR66).

Models available included:

• 20 MHz FSB, 40 MHz clock speed. This version of the 20-MHz Overdrive (ODP) was available for the 16- and 20-MHz Intel486 SX CPU for USD $549.^[3] Price were dropped to USD $449 about four months later.^[4]
• 25 MHz FSB, 50 MHz clock speed. The 25-MHz OverDrive (ODP) version was available for USD $699.^[5] This version of CPU price were dropped to USD $599 about four months later. The ODPR486 DX-25 was available for USD $599.^[6]
• FSB 33 MHz, ความเร็วสัญญาณนาฬิกา 66 MHz ทั้ง ODP486 DX-33 และ ODPR486 DX-33 มีจำหน่ายในราคา 799 ดอลลาร์สหรัฐต่อชิ้น^{[ 7 ]}
• FSB 25 MHz, ความเร็วสัญญาณนาฬิกา 75 MHz (DX4 OverDrive)
• FSB 33 MHz, ความเร็วสัญญาณนาฬิกา 100 MHz (DX4 OverDrive)

มีการเปิดตัวซีพียู Pentium สองรุ่นที่ใช้แกน P54 สำหรับระบบที่ใช้ซ็อกเก็ต PGA 238 Socket 2 / Socket 3สำหรับข้อมูลเพิ่มเติม โปรดดูที่Pentium OverDrive

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