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— A microprocessor implementing IBM S/390 architecture operates in a 10 + 2 way system at frequencies up to 411 MHz (2.43 ns). The chip is fabricated in a 0.2-m L e CMOS technology with five layers of metal and tungsten local interconnect. The chip size is 17.35 mm 2 17.30 mm with about 7.8 million transistors. The power supply is 2.5 V and measured power… (More)
—A fast 128-bit end-around carry adder is designed and fabricated as part of the POWER6 floating-point unit in a 65nm SOI process technology. Efficient use of static circuits and careful balance of the look-ahead tree enable our floating-point design to operate beyond 5GHz with 1.1V supply.
This paper describes the design methodology employed in the design of the S/390@' Parallel Enterprise Server G4 microprocessors. Issues of verifying design metrics of area, power, noise, timing, testability, and functional correctness are discussed within the context of a transistor-level custom design approach. Practical issues of managing the complexity… (More)
The IBM POWER6e microprocessor is a high-frequency (.5-GHz) microprocessor fabricated in the IBM 65-nm silicon-on-insulator (SOI) complementary metal-oxide semiconductor (CMOS) process technology. This paper describes the circuit, physical design, clocking, timing, power, and hardware characterization challenges faced in the pursuit of this industry-leading… (More)