-40%
SILICON WAFER CPU 6
SILICON WAFER CPU 6
SILICON WAFER CPU 6
SILICON WAFER CPU 6
SILICON WAFER CPU 6
SILICON WAFER CPU 6
SILICON WAFER CPU 6
SILICON WAFER CPU 6
SILICON WAFER CPU 6

SILICON WAFER CPU 6"/150MM MIPS R4000 CENTRAL PROCESSING UNIT MIPS COMPUTER

$ 42.23

Availability: 100 in stock
  • Condition: GREAT CONDITION FOR AGE
  • Brand: PERFORMANCE
  • Item must be returned within: 14 Days
  • Return shipping will be paid by: Buyer
  • Refund will be given as: Money back or replacement (buyer's choice)
  • Vintage: Yes
  • Model: MIPS
  • All returns accepted: Returns Accepted
  • Type: CPU

    Description

    For sale are three MIPS R4000 CPU wafers.
    Each buyer gets ONE (1) wafer.
    The wafer is 6" or 150mm in diameter.
    The photos are of the actual wafers taken under LED lighting.
    This is perfect for students, a display or microscope specimen in a lab or just as a talking point in your den or office. CPUs of this vintage are easy to view under a modest microscope and are absolutely fascinating to see up close.
    The
    R4000
    is a
    microprocessor
    developed by
    MIPS Computer Systems
    that implements the
    MIPS III
    instruction set architecture
    (ISA). Officially announced on 1 October 1991, it was one of the first 64-bit microprocessors and the first MIPS III implementation. In the early 1990s, when
    RISC
    microprocessors were expected to replace CISC microprocessors such as the Intel
    i486
    , the R4000 was selected to be the microprocessor of the
    Advanced Computing Environment
    (ACE), an industry standard that intended to define a common RISC platform. ACE ultimately failed for a
    number of reasons
    , but the R4000 found success in the workstation and server markets.