Check the listing for details. NEW DX4 100 BOXED INTEL PROCESSOR OVERDRIVE DX4ODPR100 486 100Mhz CPU 33/100. Condition: New. Listed at 275.00 USD. For Sale: NEW in Retail Box!Very Very Rare Vintage Collectible Item INTEL PROCESSOR OVERDRIVE Model# DX4 DX4ODPR100 486 DX4 100Mhz CPUUpgrade your 33Mhz, or 66Mhz CPU's *This is 168Pin Swap out CPU Design chip (ODPR) *******************************************************************************NOTE: Each 486 Overdrive typically came in 2 versions, ODP and ODPR variants. 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 a special 'Overdrive socket on some 486 boards, which would disable the existing CPU without needing to remove it (in case that the existing CPU is surface mounted). ODP chips will not work in Pre-Socket 1 486 boards due to the extra pin. The ODP and ODPR labeling can be found in the CPU's model number(i.e.: DX4ODPR100). **Box is in near mint condition, very minor shelf wear may be on some. ✔️ FAST Shipping, Packaged Professionally with care.✔️ NEXT DAY SHIPPING!✔️ 30-Day Warranty✔️ 100% Satisfaction is Guaranteed!✔️ I have 100% Positive feedback! WITH OVER 3,900+ Reviews!Thanks for looking!✅ EXCELLENT Condition ✅ Classic example of this HIGHLY COLLECTIBLE ✅ Collectible ✅ Very Rare ✅ Vintage ✅ Working. ✅ NEW