IBM 4381 TCM MCM VINTAGE Mainframe Processor CPU IC Ceramic Gold EXTREMELY RARE For Sale

IBM 4381 TCM MCM VINTAGE Mainframe Processor CPU IC Ceramic Gold EXTREMELY RARE


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IBM 4381 TCM MCM VINTAGE Mainframe Processor CPU IC Ceramic Gold EXTREMELY RARE :
$265.00

I have here an EXCELLENT CONDITION EXTREMELY RARE VINTAGE IBM 4381 TCM Mainframe Computer CPU Processor. WITH HEATSINK.
This was purchased for my personal collection a number of years ago. This is one of the Best Condition IBM Mainframe Processors I have seen over the years, and you can see from the other offerings currently on this site, that don't include a heatsink, what condition they are in.Open to offers.
If you have any questions please do not hesitate to ask.
I will be listing many unique, rare, one-of-a-kind, vintage CPU, Computer Chips, Silicon Wafers, and other parts in the following weeks, so if there is any interest or inquiry into something I might have, please don't hesitate to ask!
Thank you for your time with viewing my listing, I appreciate it. I hope you have a great information about the IBM 4381 TCM style="margin:0px; padding:6px 0px; border:0px; outline:0px; font-size:1em; vertical-align:baseline; font-family:Arial, sans-serif; color:rgb(51, 51, 51);">The following is the text of an undated IBM product brochure.

The IBM 4381 Processor is one of the most powerful and versatile intermediate system processors ever produced by IBM. Its system capabilities enable the 4381 to address an expanded range of user requirements in addition to providing growth for users of smaller, intermediate system processors.

  • The 4381 Model Groups 1 and 2 are uniprocessors, whereas the Model Group 3 is a dual processor, consisting of two integrated instruction processing units operating under a single control program, each having its own channels and high-speed buffer and sharing processor storage.
  • The 4381 Model Group 1 in System/370 mode provides:
    • Internal throughput rates 1.4 to 1.6 times as fast as the 4341 Model Group 2 for commercial workloads.
    • Internal throughput rates up to 1.7 times as fast as the 4341 Model Group 2 for scientific workloads.
  • The 4381 Model Group 2 in System/370 mode provides:
    • Internal throughput rates 1.7 to 2.3 times as fast as the 4341 Model Group 2 for commercial workloads.
    • Internal throughput rates 2.4 to 3.0 times as fast as the 4341 Model Group 2 for scientific workloads.
  • The 4381 Model Group 3 provides internal throughput rates up to 1.7 times as fast as the 4381 Model Group 2 for commercial workloads, and up to 1.9 times as fast for scientific workloads.
  • A 4381 Model Group 1 can be upgraded in the field to a 4381 Model Group 2, and the Model Group 2 can be field upgraded to a Model Group 3.
  • Eight-byte parallel data flow occurs within the processor as well as between the processor and the high-speed buffer storage and channels.
  • Sixteen-byte parallel data flow occurs between the high-speed buffer and processor storage.
  • There are assists available for engineering and scientific applications. These include the Multiply/Add Facility, the Square Root Facility (for all model groups), and the Mathematical Function Facility (for the 4381 Model Groups 2 and 3 only).
  • The 4381 utilizes a unique air-cooling approach, and the upright design saves floor space.
  • The compact packaging and the superior internal performance of the 4381 Processor are made possible through the use of a new module-on-board packaging technique that replaces the card-on-board packaging in the instruction processing unit. Impingement aircooling, a new concept in processor cooling ensures adequate cooling of the high-density modules using only room-temperature air as the cooling medium.
  • I/O device attachment capability is improved: Up to 18 channels are available in the maximum configuration of the Model Group 3. Of these, eight are 3MB per second data streaming channels.
  • Support for both System/370 and System/370 extended architecture (XA) operating systems enables the 4381 to meet the growth and operating system requirements of the smallest System/360, System/370 and 4300 users, while being compatible with the most powerful 308X processors offered by IBM.


* Processor storage sizes of 24MB and 32MB run in 4K page mode only.

  • 68 nanosecond internal processor cycle time.
  • Aggregate data transfer rate of up to 32MB per second in data streaming mode in the maximum channel configuration with the Model Group 3.
  • Supported by MVS/370 and VM/SP in S/370 mode; and MVS/XA and VM/XA Migration Aid in S/370-XA mode. Supported by DOS/VSE with VSE/Advanced Functions, and OS/VS1 with BPE, in S/370 mode, natively in 4381 Model Groups 1 and 2, and as a VM/SP guest operating system only in 4381 Model Group 3.
  • Extended Control Program Support (ECPS) for MVS/370 and VM/370.
  • Remote Support Facility (RSF) and the Remote Operator Console Facility (ROCF).
  • Enhancements to the Problem Analysis Facility, including support for five or six languages other than English (depending on the console type).
  • Mathematical Function Facility (4381 Model Groups 2 and 3 only) reduces processor busy time by up to 65 percent for the assisted functions.
  • Multiply/Add Facility and Square Root Facility.
  • Enhancements to ECPS: MVS for MVS/System Product Version 1 Release 3 and MVS/SP Version 2 Release 1.1 (includes cross memory services, the page fault assist function, and the ADDFRR instruction).
  • Preferred machine assist to improve performance of MVS/370 running as a guest under VM/SP High Performance Option.
4381 Areas of use

The performance range of the 4381 Processor and its features enable the 4381 to satisfy a variety of computing needs.

4381 Central site options
  • As growth options from 4331, 4361, 4341, 3158, 3031, 3168, 3032, or equivalent processors
  • As loosely coupled processors to 308X complexes
  • As S/370-XA migration, test, or production vehicles
  • As application processors for:
    • Information centers
    • DP professionals
    • Business professionals
    • Special applications
    • Twelve models of the 4381 Processor are available, offering three computing power options and various sizes of processor storage.

      • Model Group 1: Models L1, Ml and P1 with 4, 8 and 16MB of processor storage respectively.
      • Model Group 2: Models L2, M2, P2, Q2 and R2 with 4, 8, 16, 24 and 32MB of processor storage respectively.
      • Model Group 3: Models M3, P3, Q3 and R3 with 8, 16, 24 and 32MB of processor storage respectively.

      Processor storage upgrades can be made in the field.

      Standard features
      • Virtual storage capability by dynamic address translation
      • Byte multiplexer channel
      • Data Streaming mode
      • Channel command retry on block multiplexer channels
      • Byte-oriented operands
      • Clock comparator and CPU timer
      • Control registers
      • Error checking and correction in processor storage
      • Extended precision floating-point
      • Interval timer
      • Machine check handling
      • Support processor
      • Instruction retry
      • Program event recording
      • Reloadable control storage
      • Storage protection (store and fetch)
      • S/370 universal instruction set
      • Two system diskette drives
      • Time-of-day clock
      • PSW key handling
      • Compare and swap and compare double and swap
      • Clear I/O
      • Clear channel
      • External signals
      • Unit power off
      • Fast release for the start I/O fast instruction
      • Hardware reconfiguration in high-speed buffer, swap buffer, control storage, and channel data buffer
      • Recovery Extension Facility
      • Remote Support Facility (RSF)
      • Remote Operator Console Facility (ROCF) when RSF is installed
      Optional features

      Channel-to-channel adapter (#1850): One channel-to-channel feature is optionally available to interconnect two channels (4381 Processor, 4300 Processor, S/360, S/370, 30XX). One of processors requires this feature and three control unit positions on each of the connected channels. Maximum: one. Field Installation: yes. Prerequisite: one #4631 must be specified on the primary 3278 Display Console Model 2A or 3279 Color Display Console Model 2C. The 3205 does not require this feature.

      Block multiplexer channels, additional (#1870) (Model Groups 1 and 2 only): An optional group of six block multiplexer channels. Enables simultaneous operation of high-speed devices a data rate of 2.0MB per second for two channels and 1.0MB per second for four channels. Maximum: one. Field Installation: yes.

      Block multiplexer channels, additional (#1871) (Model Group 3 only): Two optional groups of three block multiplexer channels (six total channels). Permits simultaneous operation of high-speed devices at a data rate of 2.0MB per second for two channels and 1.0MB per second for one channel for each group. Maximum: one Field Installation: yes.

      Prerequisites

      Each 4381 Processor requires one IBM 3278 Display Console Model 2A, 3279 Color Display Console Model 2C or 3205 Display Console which is equipped with an operator console keyboard and an operator control panel. A second 3278, 3279 or 3205 display console, although not required, will enhance system operations for most customers. For the Model Group 3, it is recommended that the second console be channel attached to the second processor. 3205s cannot be mixed with 3278s or 3279s.


      The following is the text of an IBM Information Systems Group press fact sheet distributed on May 19, 1987.

      The IBM 4381 Processor Model Groups (MG) 21, 22, 23 and 24 bring expanded performance to the 4381 processor product line. They provide a performance improvement of up to 30 percent over current models, and greater price performance. A wide variety of upgrade options is available for customers -- enhancing their investment in System/370 software, hardware, applications and training.

      The IBM 4381 Processor is a high-end, mid-range processor with a performance range between the IBM 9370 Information System and the IBM 3090 processor family. The 4381 can be used for general purpose commercial applications, as well as specialized applications requiring complex mathematical operations. It is IBM's entry-level processor series that supports Extended Architecture (XA).

      Highlights
      • New technology: use of IBM's newest one megabit memory chip technology in MG22, MG23 and MG24; a denser memory technology which allows increased memory capacity and faster processing.
      • Increased memory: double the memory capacity in the processor line by offering up to 64 megabytes (MB) in the MG23 and MG24.
      • More upgrade options: upgrades within the newly-announced MG21-24; from the Model Groups 11 through 14 to the new processors; and from the original Model Groups 1 through 3.
      • Performance growth: six-fold performance growth from the entry-level Model Group 11 through Model Group 24.
      • Faster processor cycle times: 52 nanoseconds in Model Groups 23 and 24.
      • More high-speed channels: Additional high-speed (3MB/second) channels on the MG21, 23 and 24.
      • Connectivity: Serial Original Equipment Manufacturer Interface (SOEMI) attachment capability, providing connectivity between the 4381 host processor and OEM subsystems.
      • Wide array of operating systems: VM, MVS, VSE, IX/370, TPF, OS/VS1 as well as MVS/XA, VM/XA and VM/HPO.
      • New performance assist feature: 15 percent performance increase for Interactive Executive/370 (IX/370) microcode support.
      • Preferred Machine Assist (PMA): 10-30 percent performance improvement for VSE/SP running as a guest operating system under Virtual Machine/System Product (VM/SP) High Performance Option.
      • Enhanced Compute-Intensive Capability.
      • Installation Flexibility: Air cooled to allow customer installation either in data processing centers or in the work areas.
      • High Reliability.
      IBM 4381 performance

      The internal throughput rates have been estimated and compared to similar measurements for the Model Groups 11 through 14. IBM customers can expect significant performance gains of up to 30 percent for commercial applications when upgrading to the new 4381 processor model groups. The following are sample performance increase percentages.

      Model GroupCommercial11 to 211.511 to 222.212 to 231.713 to 231.313 to 242.214 to 241.3
      Model Group 21
      • A uniprocessor that is approximately 30 percent more powerful than the entry-level Model Group 11.
      • Double the minimum memory of the Model Group 11, with memory capacities of eight and 16MB.
      • High-speed buffer storage: 8KB.
      • Cycle time: 68 nanoseconds (ns).
      • Six standard and six optional channels.
      • Additional 3MB/second data streaming channel capability.
      • Availability: First quarter 1988.
      • Price: $225,000.
      Model Group 22
      • An intermediate level uniprocessor.
      • Memory capacity: 16, 32MB.
      • High-speed buffer storage: 32KB.
      • Cycle time: 68ns.
      • Six standard and six optional channels.
      • Availability: First quarter 1988.
      • Price: $350,000.
      Model Group 23
      • A high-end uniprocessor with memory up to 64 megabytes (MB) that is 30 percent more powerful than the Model Group 13.
      • Memory capacity: 16, 32, 48, 64MB.
      • High-speed buffer storage: 64KB.
      • Cycle time: 52ns.
      • Six standard and six optional channels.
      • Additional 3MB/second data streaming channel capability.
      • Availability: First quarter 1988.
      • Price: $530,000.
      Model Group 24
      • A high-end dual processor with memory up to 64MB that is 30 percent more powerful than the Model Group 14.
      • Memory capacity: 16, 32, 48, 64MB.
      • High-speed buffer storage: 2 buffers, each 64KB.
      • Cycle time: 52ns.
      • 12 standard and 6 or 12 optional channels.
      • Additional 3MB/second data streaming channel capability.
      • Availability: First quarter 1988.
      • Price: $890,000.



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