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IDT MIPS Rx000
  IDT 79R3000A-12G
  IDT 79R3010A-12QJ
  IDT 79R3010L-33G
  IDT 79R3020-20G
  IDT 79R3020-33G
  IDT 79R3500-33G
  IDT 79R4400MC-50G447
  IDT 79R4600-100G
  IDT 79R4600-133G
  IDT 79R4600-133G 'Orion'
  IDT R4700 79RV4700-100G 'Orion'
  IDT R4700 79RV4700-133G
  IDT R5000 79RV5000-150G
» IDT overview
» all MIPS Rx000 chips
 
The IDT 79R3000 / MIPS R3000 Processor
The first commercial MIPS CPU model, the R2000, was announced in 1985 as a 32-bit implementation. It was followed by the R3000, the first successful MIPS design in the marketplace with more than 1 million processors made. The R3000 was used in high-end UNIX computers by Siemens and DEC and in the Silicon Graphics SGI Personal IRIS 4D/20 graphic workstations. On this machines 3D sequences for movies like The Abyss, Jurrasic Park or Terminator 2 were rendered.
 
The R3000 has an interface to handle 3 coprocessors. Each coprocessor has a flag line connected with the CPU that can be tested and a conditional branch executed dependent on its value. Coprocessor instructions can be executed directly from the instruction stream.
Coprocessor 0 (CP0) is incorporated on the CPU chip and supports the virtual memory system and exception handling. It is also referred to as the System Control Coprocessor. CP1 is reserved for the floating point coprocessor. An FPU is mandatory for most R3000 systems. CP2 is available for specific implementations and is often used to accelerate memory access by connecting it to an R3020 memory buffer or an R3220 read/write buffer chip. Later versions of the R3000 (R3000A) had built in memory buffer circuitry.
 
Reference:  R3000 at SGIstuff  R3000 information (German)
IDT 79R3000A-12G
IDT 79R3000A-12G Top Side
IDT
79R3000A
-12G
8922BI
IDT 79R3000A-12G Back Side
B8513
USA
A MIPS R3000 CPU, manufactured by MIPS licensee IDT.
 
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Core Frequency:12 MHz
Board Frequency:12 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:110,000
Circuit Size:1.20
Introduced:1988
Manufactured:week 22/1989
Made in:USA
Package Type:Ceramic
Goldcap
PGA-145
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The MIPS R3010 FPU
The R3010 is the FPU for the MIPS R3000 CPU. It provides high-speed floating point capability for systems based on the R3000 CPU. The organization of the FPU architecture is similar to that of the R3000 CPU, and allows for optimization of both integer and floating-point performance.
 
The R3010 FPU connects seamlessly to the R3000 CPU via the R3000 coprocessor interface CP1, and since both units receive instructions in parallel, floating-point instructions can be initiated at the same single cycle rate as fixed-point instructions.
IDT 79R3010A-12QJ
IDT 79R3010A-12QJ Top Side
IDT
79R3010A-12QJ
8908C1
IDT 79R3010A-12QJ Back Side
87596
USA
This is an R3010 FPU for the MIPS R3000 CPU from my Silicon Graphics SGI Personal IRIS 4D/20 graphic workstation.
 
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Core Frequency:12 MHz
Board Frequency:12 MHz
Introduced:1988
Manufactured:week 08/1989
Made in:USA
Package Type:Ceramic
LCC-84
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IDT 79R3010L-33G
IDT 79R3010L-33G Top Side
IDT
79R3010L
-33G
9008BP
IDT 79R3010L-33G Back Side
LD4675
MALAY
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Core Frequency:33 MHz
Board Frequency:33 MHz
Introduced:1988
Manufactured:week 08/1990
Made in:Malaysia
Package Type:Ceramic
PGA-84
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The IDT R3020 Memory Buffer
Early implementations of R2000/R3000 processors had no write buffer circuit inside to isolate the CPU from memory subsystem. There were companion chips for R2000/R3000 to implement write buffering, connected via the CP2 coprocessor interface of the R3000 CPU. Newer designs of the R3000 (R3000A) have built in memory buffer circuitry.
IDT 79R3020-20G
IDT 79R3020-20G Top Side
IDT
79R3020
-20G
8911BI
IDT 79R3020-20G Back Side
EB8046
USA
An R3020 Memory Buffer coprocessor for the MIPS R3000 CPU
 
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Core Frequency:20 MHz
Board Frequency:20 MHz
Introduced:1988
Manufactured:week 11/1989
Made in:USA
Package Type:Ceramic
PGA-68
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IDT 79R3020-33G
IDT 79R3020-33G Top Side
IDT
79R3020
-33G
8923BI
IDT 79R3020-33G Back Side
G0113
USA
An R3020 Memory Buffer coprocessor for the MIPS R3000 CPU
 
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Core Frequency:33 MHz
Board Frequency:33 MHz
Introduced:1988
Manufactured:week 23/1989
Made in:USA
Package Type:Ceramic
PGA-68
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The IDT 79R3500 / MIPS R3500 Processor
The R3500 is an R3000 with integrated R3010 FPU, MMU and memory buffers. Military versions of the R3500 got quite famous for their usage in the 1st generation F-16 Modular Mission Computer (MMC).
IDT 79R3500-33G
IDT 79R3500-33G Top Side
IDT
79R3500A
-33G
9437C
IDT 79R3500-33G Back Side
JV7074
MALAY DP
A MIPS R3500 CPU, manufactured by MIPS licensee IDT.
 
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Core Frequency:12 MHz
Board Frequency:12 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:110,000
Circuit Size:1.20
Introduced:1990
Manufactured:week 37/1994
Made in:Malaysia
Package Type:Ceramic
Goldcap
PGA-161
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The IDT / MIPS R4400 Processor
The MIPS R4000 series, released in 1991, extended the MIPS instruction set to a full 64-bit architecture and moved the FPU onto the main die to create a single-chip system. The design was so important to SGI, at the time MIPS' major customer, that SGI bought the company in 1992. A number of improved versions soon followed, including the R4400.
The R4x00 processors have been available and used in different versions. PC (as in R4400PC) denotes primary cache only and SC denotes secondary cache. The MC versions contain special support for cache architectures in multiprocessor systems.
R4400 processors where used in many Silicon Graphics computers, e.g. the Indigo2 workstations, Onyx supercomputers and Challenge servers.
 
References:  MIPS R4400 Product Information  R4400 at SGIstuff
IDT 79R4400MC-50G447
IDT 79R4400MC-50G447 Top Side
IDT
79R4400MC
-50G447
9331C
IDT 79R4400MC-50G447 Back Side
JG8168
USA CP
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Core Frequency:50 MHz
Board Frequency:50 MHz
Data bus (ext.):64 Bit
Address bus:64 Bit
Transistors:2,300,000
Voltage:3.3 V
Introduced:05/1994
Manufactured:week 31/1993
Made in:USA
L1 Cache:16+16 KB
Package Type:Ceramic
Goldcap
PGA-447
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The IDT R4600 Processor
The IDT R4600 'Orion' was designed by Quantum Effect Devices (QED), a company started by former MIPS employees. R4600 processors where used in Silicon Graphics Indy workstations and are still used in Cisco series 4000 routers.
 
References:  MIPS R4600 Product Information  IDT 79R4700 Documents  R4600 at SGIstuff
IDT 79R4600-100G
IDT 79R4600-100G Top Side
IDT
79R4600
-100G
9420C R17
IDT 79R4600-100G Back Side
JV6386
MALAY Di
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Core Frequency:100 MHz
Board Frequency:50 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:64 Bit
Transistors:2,200,000
Introduced:1994
Manufactured:week 20/1994
Made in:Malaysia
L1 Cache:16+16 KB
L2 Cache:512 KB
CPU Code:Orion
Package Type:Ceramic
Goldcap
PGA-179
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IDT 79R4600-133G
IDT 79R4600-133G Top Side
IDT
79R4600
-133G
YA9504C
IDT 79R4600-133G Back Side
JG9670
USA EA
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Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:64 Bit
Introduced:1994
Manufactured:week 04/1995
Made in:USA
L1 Cache:16+16 KB
L2 Cache:512 KB
CPU Code:Orion
Package Type:Ceramic
Goldcap
PGA-179
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IDT 79R4600-133G 'Orion'
IDT 79R4600-133G 'Orion' Top Side
ORION
IDT
79R4600
-133G
YA9531C
IDT 79R4600-133G 'Orion' Back Side
JV9631
MALAY EL
add comment
Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:64 Bit
Transistors:2,200,000
Introduced:1994
Manufactured:week 31/1994
Made in:Malaysia
L1 Cache:16+16 KB
L2 Cache:512 KB
CPU Code:Orion
Package Type:Ceramic
Goldcap
PGA-179
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The IDT R4700 Processor
The IDT R4700 'Orion' was designed by Quantum Effect Devices (QED), a company started by former MIPS employees. R4700 processors where used in Silicon Graphics Indy workstations and are still used in Cisco series 4000 routers.
 
References:  MIPS R4600 Product Information  IDT 79R4700 Documents  R4600 at SGIstuff
IDT R4700 79RV4700-100G 'Orion'
IDT R4700 79RV4700-100G 'Orion' Top Side
IDT
ORION
79RV4700
-100G
YB9706P
IDT R4700 79RV4700-100G 'Orion' Back Side
FV13646
MALAY FQ
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Core Frequency:100 MHz
Board Frequency:50 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:64 Bit
Transistors:2,200,000
Voltage:3.3 V
Introduced:1994
Manufactured:week 06/1997
Made in:Malaysia
L1 Cache:16+16 KB
L2 Cache:512 KB
CPU Code:Orion
Package Type:Ceramic
Goldcap
PGA-179
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IDT R4700 79RV4700-133G
IDT R4700 79RV4700-133G Top Side
IDT
ORION
79RV4700
-133G
SCD7131
YD9803C
IDT R4700 79RV4700-133G Back Side
FV19122
MALAY HA
add comment
Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:64 Bit
Transistors:2,200,000
Voltage:3.3 V
Introduced:1994
Manufactured:week 03/1998
Made in:Malaysia
L1 Cache:16+16 KB
L2 Cache:512 KB
CPU Code:Orion
Package Type:Ceramic
Goldcap
PGA-179
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The IDT R5000 Processor
The R5000, designed by Quantum Effect Devices (QED), replaced the R4600 in 1996. The R5000 FPU had more flexible single precision floating-point scheduling than the R4x00, and as a result, R5000-based SGI Indys had much better graphics performance than similarly clocked R4400 Indys with the same graphics hardware. SGI gave the old graphics board a new name (XL8 -> XGE8) when it was combined with R5000 in order to emphasize the improvement.
 
References:  MIPS R5000 introduction  MIPS R5000: Fast, Affordable 3-D  IDT 79RV5000 Documents  R5000 at SGIstuff
IDT R5000 79RV5000-150G
IDT R5000 79RV5000-150G Top Side
IDT
79RV5000
-150G
ZA9635C
IDT R5000 79RV5000-150G Back Side
FG11446
USA F0
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Core Frequency:150 MHz
Board Frequency:50 MHz
Clock Multiplier:3.0
Data bus (ext.):64 Bit
Address bus:64 Bit
Transistors:3,700,000
Circuit Size:0.32
Core / I/O Voltage:3.3 / 3.6 V
Introduced:04/1996
Manufactured:week 35/1996
Made in:USA
L1 Cache:32+32 KB
Package Type:Ceramic
Goldcap
PGA-223
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