cpu-collection.de >> OverDrive >> Intel

Intel OverDrive processors are a category of various Intel CPUs that were produced to upgrade computers. ODP is the acronym for Over Drive Processor, however most OverDrives are ODPR (Over Drive Processor Replacement) chips: To upgrade a computer to a new processor you just replace it with the new one. Their interfaces appear to the motherboard like an older chip, so you don't need to worry about whether or not the motherboard supports the higher speeds. ODP chips (like the DX2ODP66 or the ODP486SX-25) in contrast were made for additional sockets on the mainboard, the Performance Upgrade Socket.

On older versions Intel labeled the OverDrive chips with the external local bus speed they supported, like the ODP486SX-25 and ODPR486DX-33. Since all these OverDrive chips have the clock doubling feature, it was assumed by Intel that everyone knows that the CPU runs at twice the bus speed internally. Newer chips follow the DX2/DX4 naming scheme of the i486 DX.

i486 OverDrive Old Naming Scheme

Intel OverDrive ODP486SX-25


ODP486SX-25 SZ676 C2281437 A2 INTEL (M) (c) 1989	C2166723CE A4 EE 25

This is an OverDrive processor for an additional OverDrive socket on the mainboard.
Upgrades 25 MHz Intel 486SX based systems to 50 MHz.

Comment by Paul Collins (pi314aussie[at]yahoo.com):

Note the extra pin. It is a kind of "tell the other guy to shut down" pin. Implemented so that the end-user can just "add" this new chip into the spare upgrade socket, without any need of interfering with the originally supplied SX CPU. Ie. what end-user can remove a PLCC or even PQFP chip.

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Core Frequency:	50 MHz
Board Frequency:	25 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	1992
Manufactured:	week 28/1992
L1 Cache:	8 KB
CPU Code:	i486 ODP P4T
Intel S-Spec:	SZ676
Package Type:	Ceramic PGA-169
Socket:	1/2/3

Intel OverDrive ODPR486DX-25


ODPR486DX-25 SZ697 C243502W B1 INTEL(M)(C)1989	C2365083CB A4 BM 43

Upgrades 25 MHz Intel 486DX and SX based systems to 50 MHz.

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Core Frequency:	50 MHz
Board Frequency:	25 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
Manufactured:	week 43/1992
L1 Cache:	8 KB
CPU Code:	i486 ODPR P4T
Intel S-Spec:	SZ697
Package Type:	Ceramic PGA-168
Socket:	1/2/3

Intel OverDrive ODPR486DX-25 (V3.0)


ODPR486DX-25 C4070536 SZ877 V3.0 (M)(C)1989 1992	9343929GCA A4 EE 07

Upgrades 25 MHz Intel 486DX and SX based systems to 50 MHz.

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Core Frequency:	50 MHz
Board Frequency:	25 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
Manufactured:	week 07/1994
L1 Cache:	8 KB
CPU Code:	i486 ODPR P4T
Intel S-Spec:	SZ877
Package Type:	Ceramic PGA-168
Socket:	1/2/3

Intel OverDrive ODPR486DX-33


ODPR486DX-33 SZ698 C240046W B1 INTEL(M)(C)1989	C2294373CC A4 BM 37

Upgrades 33 MHz Intel 486DX and SX based systems to 66 MHz.

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Core Frequency:	66 MHz
Board Frequency:	33 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Manufactured:	week 40/1992
L1 Cache:	8 KB
CPU Code:	i486 ODPR P4T
Intel S-Spec:	SZ698
Package Type:	Ceramic PGA-168
Socket:	1/2/3

Intel OverDrive ODPR486DX-33 w/o Cooler


ODPR486DX-33 SZ698 C2522231 B1 INTEL (M) (c) 1989	C2441524CA A4 BM 52

Upgrades 33 MHz Intel 486DX and SX based systems to 66 MHz.

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Core Frequency:	66 MHz
Board Frequency:	33 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
Manufactured:	week 17/1994
L1 Cache:	8 KB
CPU Code:	i486 ODPR P4T
Intel S-Spec:	SZ698
Package Type:	Ceramic PGA-168
Socket:	1/2/3

Intel OverDrive ODPR486DX-33 (V3.0)


ODPR486DX-33 C4050331 SZ878 V3.0 (M)(C)1989 1992	8345591GCB A4 EE 04

Upgrades 33 MHz Intel 486DX and SX based systems to 66 MHz.

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Core Frequency:	66 MHz
Board Frequency:	33 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
Manufactured:	week 05/1994
L1 Cache:	8 KB
CPU Code:	i486 ODPR P4T
Intel S-Spec:	SZ878
Package Type:	Ceramic PGA-168
Socket:	1/2/3

i486 OverDrive New Naming Scheme

Intel OverDrive DX2ODP50


	BOXDX2ODP50, SZ932

This is an OverDrive processor for an additional OverDrive socket on the mainboard.

Upgrades 25 MHz Intel 486DX and SX based systems to 50 MHz.

The Processor is still sealed in its original box.

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Core Frequency:	50 MHz
Board Frequency:	25 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
L1 Cache:	8 KB
CPU Code:	i486 ODP
Intel S-Spec:	SZ932
Package Type:	Ceramic PGA-169 Cooler
Socket:	1/2/3

Intel OverDrive DX2ODP66 (V4.0)


DX2ODP66 C4500207 SZ933 V4.0 INTEL (M) (c) '89 '92	94394054CC A4 AG 49

This is an OverDrive processor for an additional OverDrive socket on the mainboard.
Upgrades 33 MHz Intel 486DX and SX based systems to 66 MHz.

Comment by Paul Collins (pi314aussie[at]yahoo.com):

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Core Frequency:	66 MHz
Board Frequency:	33 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
Manufactured:	week 50/1994
L1 Cache:	8 KB
CPU Code:	i486 ODP P23T
Intel S-Spec:	SZ933
Package Type:	Ceramic PGA-169 Cooler
Socket:	1/2/3

Intel OverDrive DX2ODPR66 (V3.0)


DX2ODPR66 C4370275 SZ904 V3.0 (M)(C)1989 1992	94394054CC A4 AG 49

Upgrades 33 MHz Intel 486DX and SX based systems to 66 MHz.

There is not much difference between an DX2ODPR66 and a standard 486DX2-66. Intel was marketing their speed doubling technology in different products. DX2 chips were sold to Intel OEMs and OverDrive chips were sold directly to end-users. The DX2 chips typically have no built-in heatsink and have a distinctive DX2 label. The OverDrive chips have a distinctive OverDrive label and may have a built-in heatsink.
The 'V3.0' and 'V4.0' marks the third and fourth stepping of the processor since introduction.

References: pcguide.com Intel

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Core Frequency:	66 MHz
Board Frequency:	33 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
Manufactured:	week 37/1994
L1 Cache:	8 KB
CPU Code:	i486 ODP P23T
Intel S-Spec:	SZ904
Package Type:	Ceramic PGA-168 Cooler
Socket:	1/2/3

Intel OverDrive DX2ODPR66 (V4.0)


DX2ODPR66 C5240780 SZ935 V4.0 INTEL (M)(C)'89'92

Upgrades 33 MHz Intel 486DX and SX based systems to 66 MHz.

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Core Frequency:	66 MHz
Board Frequency:	33 MHz
Clock Multiplier:	2.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	06/1993
Manufactured:	week 24/1995
L1 Cache:	8 KB
CPU Code:	i486 ODP P23T
Intel S-Spec:	SZ935
Package Type:	Ceramic PGA-168 Cooler
Socket:	1/2/3

Intel OverDrive DX4ODP75


BOXDX4ODP75

Upgrades 25 MHz Intel 486DX & 16/20/25 MHz 486SX based systems to 75 MHz.
The Processor is still sealed in its original box.

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Core Frequency:	75 MHz
Board Frequency:	25 MHz
Clock Multiplier:	3.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	10/1994
L1 Cache:	16 KB
CPU Code:	i486 ODP
Package Type:	Ceramic PGA-169
Socket:	1/2/3

Intel OverDrive DX4ODPR75 (V1.1)


DX4ODPR75 C5291151 SZ958 V1.1 INTEL(M)(C) '89'93	A5051163CB A4 29

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.

References: pcguide.com

Comment by Hugh Russell (hugtheslug[at]yahoo.co.uk):

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]yahoo.co.uk):

Forgot to add, 486 fan was attached to heatsink for extra cooling and stability.

Comment by Johann (lord80james2003[at]yahoo.com):

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.

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Core Frequency:	75 MHz
Board Frequency:	25 MHz
Clock Multiplier:	3.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	10/1994
Manufactured:	week 29/1995
L1 Cache:	16 KB
CPU Code:	i486 DPR P4T
Intel S-Spec:	SZ958
Package Type:	Ceramic PGA-168
Socket:	1/2/3

Intel OverDrive DX4ODPR100 (V1.0)


DX4ODPR100 C43507058 SZ926 V1.0 INTEL(M)(C) '89'93	24231670-Z A4 36

Upgrades 33 MHz Intel 486DX & SX based systems to 100 MHz.

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Core Frequency:	100 MHz
Board Frequency:	33 MHz
Clock Multiplier:	3.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	10/1994
Manufactured:	week 35/1994
L1 Cache:	16 KB
CPU Code:	i486 DPR P4T
Intel S-Spec:	SZ926
Package Type:	Ceramic PGA-168
Socket:	1/2/3

Intel OverDrive DX4ODPR100 (V1.1)


DX4ODPR100 C5040328 SZ959 V1.1 INTEL(M)(C) '89'93	24441330CC A4 20

Upgrades 33 MHz Intel 486DX & SX based systems to 100 MHz.

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Core Frequency:	100 MHz
Board Frequency:	33 MHz
Clock Multiplier:	3.0
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Voltage:	5 V
Introduced:	10/1994
Manufactured:	week 04/1995
L1 Cache:	16 KB
CPU Code:	i486 DPR P4T
Intel S-Spec:	SZ959
Package Type:	Ceramic PGA-168
Socket:	1/2/3

Pentium OverDrive for 486

This Pentium OverDrives are Intel Pentium processors for 486 Socket 3 and Socket 2 motherboards, provided as a means to give a Pentium performance-level upgrade option for owners of 486 computer systems. It was however criticised for being more expensive and slower than competing CPU-upgrade options such as the AMD Am5x86 and Cyrix 5x86, and being too late to the market. Mainboard compatibility was also a problem, it turned out that many boards didn't support this new chip.

To perform properly, the Pentium OverDrive was dependent on a high amount of secondary cache ram being present on the motherboard; without it the chip was only a trivial amount faster than a DX4.

References: Datasheet Intel pcguide.com

Intel Pentium OverDrive PODP5V63


PODP5V63 C5321144-0115 SZ990 V1.1 INTEL (M)(C)'92'94	A5124018CB A4 31

Upgrades 25 MHz Intel 486 based systems to Pentium technology at 63 MHz.

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Core Frequency:	63 MHz
Board Frequency:	25 MHz
Clock Multiplier:	2.5
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Transistors:	3,300,000
Circuit Size:	0.60 µ
Voltage:	5 V
Introduced:	February 3, 1995
Manufactured:	week 32/1995
L1 Cache:	16+16 KB
CPU Code:	P24T
Intel S-Spec:	SZ990
Package Type:	Ceramic PGA-234
Socket:	2,3

Intel Pentium OverDrive PODP5V83


PODP5V83 C5418391-0116 SU014 V2.1 INTEL (M)(C)'92'94	A5301434CA A4 41

Upgrades 33 MHz Intel 486 based systems to Pentium technology at 83 MHz.

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Core Frequency:	83 MHz
Board Frequency:	33 MHz
Clock Multiplier:	2.5
Data bus (ext.):	32 Bit
Address bus:	32 Bit
Transistors:	3,300,000
Circuit Size:	0.60 µ
Voltage:	5 V
Introduced:	October, 1995
Manufactured:	week 41/1995
L1 Cache:	16+16 KB
CPU Code:	P24T
Intel S-Spec:	SU014
Package Type:	Ceramic PGA-234
Socket:	2,3

Pentium OverDrive for Pentium 60/66

The original Pentium P5 chips were different than later P54 versions, in terms of voltage, socket size and power consumption. Intel made a clock-doubling OverDrive for these chips, which is sold as one 120/133 MHz chip: when replacing a Pentium 60 it runs at 120 MHz, and when replacing a 66 it runs at 133. This is a true Pentium chip since it is on a Pentium motherboard, although it still benchmarks below the real Pentium 120/133, most likely due to the older design of the Pentium 60/66 motherboards.

Intel Pentium OverDrive PODP5V133


	PODP5V133 L6073203-0467 SU082 V1.0 INTEL (M)(C)'92'93
	15389030AB MALAY ES

Upgrades classic Pentium P5 60/66 MHz systems to 120/133 MHz.

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Core Frequency:	133 MHz
Board Frequency:	66 MHz
Clock Multiplier:	2.0
Data bus (ext.):	64 Bit
Address bus:	32 Bit
Transistors:	3,300,000
Circuit Size:	0.35 µ
Voltage:	5 V
Introduced:	04/1996
Manufactured:	week 03/1996
Made in:	Malaysia
L1 Cache:	8+8 KB
Intel S-Spec:	SU082
Package Type:	Ceramic PGA-273
Socket:	4

Pentium OverDrive for Pentium P54

Pentium 75, 90 and 100 MHz run with a clock multiplier of 1.5 on system buses of 50, 60 and 66 MHz respectively. Intel has made OverDrives for these running at 125, 150 and 166 MHz by using a clock multiplier of 2.5.

Intel Pentium OverDrive PODP3V125


PODP3V125 L6034092-015 SU081 V1.0 INTEL (M)(C)'92'93	15422420AE MALAY K

Upgrades Pentium 75 Mhz to Pentium 125 MHz.

Original package.

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Core Frequency:	125 MHz
Board Frequency:	50 MHz
Clock Multiplier:	2.5
Data bus (ext.):	64 Bit
Address bus:	32 Bit
Transistors:	4,500,000
Circuit Size:	0.35 µ
Voltage:	3.3 V
Manufactured:	week 03/1996
Made in:	Malaysia
L1 Cache:	8+8 KB
Intel S-Spec:	SU081
Package Type:	Ceramic PGA-320
Socket:	5, 7

Intel Pentium OverDrive PODP3V150


PODP3V150 L6092721-0558 SU083 V1.0 INTEL (M)(C)'92'93	15491660AE MALAY K

Upgrades Pentium 90 Mhz to Pentium 150 MHz.

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Core Frequency:	150 MHz
Board Frequency:	60 MHz
Clock Multiplier:	2.5
Data bus (ext.):	64 Bit
Address bus:	32 Bit
Transistors:	4,500,000
Circuit Size:	0.35 µ
Voltage:	3.3 V
Manufactured:	week 09/1996
Made in:	Malaysia
L1 Cache:	8+8 KB
Intel S-Spec:	SU083
Package Type:	Ceramic PGA-320
Socket:	5, 7

Intel Pentium OverDrive PODP3V166


PODP3V166 L6063862-0448 SU084 V1.0 INTEL (M)(C)'92'93	15422820AE MALAY K

Upgrades Pentium 100 Mhz to Pentium 166 MHz.

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Core Frequency:	166 MHz
Board Frequency:	66 MHz
Clock Multiplier:	2.5
Data bus (ext.):	64 Bit
Address bus:	32 Bit
Transistors:	4,500,000
Circuit Size:	0.35 µ
Voltage:	3.3 V
Manufactured:	week 06/1996
Made in:	Malaysia
L1 Cache:	8+8 KB
Intel S-Spec:	SU084
Package Type:	Ceramic PGA-320
Socket:	5, 7

Pentium MMX OverDrive

With the introduction of the Intel Pentium with MMX Technology, Intel also created OverDrive processors to upgrade existing Pentium motherboards to the new MMX chip. Most older Pentium motherboards cannot handle the new Pentium with MMX because of its requirement for a 2.8V core. Keeping with the tradition of Intel's OverDrive line, the Pentium with MMX OverDrive includes a converter that lets it run in Socket 5 motherboards (except for the 200) and Socket 7s that do not have 2.8V support. Otherwise the chip is identical to the standard Pentium with MMX.

References: Datasheet pcguide.com

Intel Pentium MMX OverDrive PODPMT66X166


PODPMT66X166 W/ MMX TECH L7273398-0714 SL24W V1.1 INTEL (M)(C)'92'95	E7093326AE MALAY

Upgrades original Pentium 75 to 125, 90 to 150 MHz and 100 MHz (66 MHz bus) to Pentium MMX 166 MHz.

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Core Frequency:	166 MHz
Board Frequency:	66 MHz
Clock Multiplier:	2.5
Data bus (ext.):	64 Bit
Address bus:	32 Bit
Transistors:	4,500,000
Circuit Size:	0.28 µ
Core / I/O Voltage:	3.3 / 3.3 V
Introduced:	01/1997
Manufactured:	week 27/1997
Made in:	Malaysia
L1 Cache:	16+16 KB
CPU Code:	P54CTB
Intel S-Spec:	SL24W
Package Type:	Ceramic PGA-320
Socket:	5, 7

Intel Pentium MMX OverDrive PODPMT60X180


PODPMT60X180 W/ MMX TECH L7473354-0117 SL2RL V2.1 INTEL (M)(C)'92'95	E7245708AB MALAY

Upgrades original Pentium 75 to 150, 90/120 to 180 MHz and 100 MHz (50 MHz bus) to Pentium MMX 150 MHz.

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Core Frequency:	180 MHz
Board Frequency:	60 MHz
Clock Multiplier:	3.0
Data bus (ext.):	64 Bit
Address bus:	32 Bit
Transistors:	4,500,000
Circuit Size:	0.28 µ
Core / I/O Voltage:	3.3 / 3.3 V
Introduced:	01/1997
Manufactured:	week 47/1997
Made in:	Malaysia
L1 Cache:	16+16 KB
CPU Code:	P54CTB
Intel S-Spec:	SL2RL
Package Type:	Ceramic PGA-320
Socket:	5, 7

Intel Pentium MMX OverDrive PODPMT66X200


PODPMT66X200 W/ MMX TECH L7463417-0315 SL2FF V2.0 INTEL (M)(C)'92'95	E7226356AB MALAY

Upgrades original Pentium 100/133/166 MHz to Pentium MMX 200 MHz, 90/120/150 MHz to Pentium MMX 180 MHz and 75 MHz to Pentium MMX 150 MHz.

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Core Frequency:	200 MHz
Board Frequency:	66 MHz
Clock Multiplier:	3.0
Data bus (ext.):	64 Bit
Address bus:	32 Bit
Transistors:	4,500,000
Circuit Size:	0.28 µ
Core / I/O Voltage:	3.3 / 3.3 V
Introduced:	01/1997
Manufactured:	week 46/1997
Made in:	Malaysia
L1 Cache:	16+16 KB
CPU Code:	P54CTB
Intel S-Spec:	SL2FF
Package Type:	Ceramic PGA-320
Socket:	7

The Intel Pentium II OverDrive Processor

The Pentium II OverDrive is a processor upgrade designed for Pentium Pro (Socket 8) based systems. By using the 0.25 micron Deschutes core of the Pentium II, Intel managed to put a quick end to the 16-bit weakness of the Pentium Pro, and in doing so, they also managed to double the amount of L1 cache on the processor to 32KB. The PII OverDrive is nothing more than a Pentium II Xeon on a smaller scale, using the Pentium II's design to place the L2 cache externally off of the CPU, but on a card that would allow it to operate at the same clock speed as the CPU itself. The chip has a built in clock multiplier of 5.0x, and it derives its clock speed based on the motherboard's set FSB frequency, so on a 60Mhz board (150/180MHz Pentium Pro systems) the processor operates at 300MHz, on 66MHz systems (166/200MHz Pentium Pro) at 333MHz.

References: Intel Introduction Press Release Sandpile.org

P II OverDrive

Intel Pentium II OverDrive PODP66X333


PODP66X333 SL2KE V1.0 pentium II overdrive PROCESSOR SMTD 692077-001 I(M)(C)'97

Intel Pentium II OverDrive PODP66X333 Top Side

Upgrades 150 and 180MHz Pentium Pro based systems to Pentium II 300MHz, 166 and 200MHz Pentium Pro based systems to Pentium II 333MHz.

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Core Frequency:	333 MHz
Board Frequency:	66 MHz
Clock Multiplier:	5.0
Data bus (ext.):	64 Bit
Address bus:	36 Bit
Transistors:	7,500,000
Circuit Size:	0.25 µ
Core / I/O Voltage:	2.0 / 3.3 V
Introduced:	8/1998
Manufactured:	week 20/1999
L1 Cache:	16+16 KB
L2 Cache:	512 KB
Intel S-Spec:	SL2KE
Package Type:	Plastic PGA-320
Socket:	8