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  Intel OverDrive DX4ODPR75 (V1.1) [flip chip]   []   []   [hide data]   [close image viewer]  
Upgrades 25 MHz Intel 486DX & 16/20/25 MHz 486SX based systems to 75 MHz.
DX4 OverDrives typically have qualities different from standard 486s of the same speed. These include built-in voltage regulators, different pin-outs, write-back cache instead of write-through cache, built-in heatsinks, and fanless operation.

Comment by Hugh Russell (hugtheslug[at]
Also will upgrade DX-66 systems to a stable 100 mhz.
This is probably an overclock of the overdrive itself.

Comment by Hugh Russell (hugtheslug[at]
Forgot to add, 486 fan was attached to heatsink for extra cooling and stability.

Comment by Johann (lord80james2003[at]
The Intel DX4ODP75 was designed for changing 25 MHz 486 systems to run at 75 MHz.
BUT. The v1.1 allowed 33 MHz systems to run at 100 MHz. The first version (1.0) could only bring the speed of a 33 MHz system up to ~83 MHz.

» this chip on
Core Frequency:75 MHz
Board Frequency:25 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Voltage:5 V
Manufactured:week 29/1995
L1 Cache:16 KB
CPU Code:i486 DPR
Intel S-Spec: SZ958
Package Type:Ceramic
Socket: 1/2/3
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