AMD Bulldozer, Intel server CPUs
Advanced Micro Devices provided more details on its new Bulldozer core first described at Hot Chips in August. AMD senior engineer Hugh MacIntyre said the core enables 3.5 GHz performance is same power and thermal envelope as AMD's prior core design.
The core delivers linear performance across a range of frequencies and 0.8-1.3V voltages it will need to operate. It uses 213 million transistors in a 30.9mm2 block with 11 metal gates in a 32nm SOI process, he said.
A separate paper described Bulldozer's 40-entry instruction out-of-order scheduler and execution unit that can issue up to four instructions per cycle. The unit helps the core meet its target of delivering 90 percent of performance of past AMD cores with a significant reduction in area and power, said Michael Golden, another AMD engineer.
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