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HD4850 Power System

2008-06-28 12:10:25| 分类：电脑硬件 | 标签： |举报 |字号大中小订阅

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Sporting a single PCIe power socket, the HD4850 isn't the most hungry pixel pusher for your PC. Is it a lean card then? RV770's transistor count would give a definitive "no" for an answer.

Keeping all the voltage regulators cool is a pin fin array heatsink that sits above the MOSFETs powering the GPU. Solid Polymer capacitors are used for low voltage decoupling, where their long life and low ESR handles the current requirements of the new chipset. For less critical applications, Sanyo capacitors are seen doing filter duties. These have a very good track record of reliability on par with those of Rubycon or Panasonic.

The HD4850 uses exclusively uPI Semiconductor's power regulation ICs. First up is a the 4 phase GPU Voltage Regulation Module controlled by the uPI6102.

Single phase memory power is provided with the aid of the uPI6101. More about manipulating these ICs in our future modification guide.

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