page_title: UMC Green CPU
hierarchical_section_title: UMC Green CPU
caption_attribution_description: UMC ‘Green CPU’ U5SD 486-40. Produced in 1993. Label on the other side: Not for U.S. sale (this CPU does violate some of Intel's patents and was therefore not sold in the USA)
context_page_description: The UMC Green CPU was an x86-compatible microprocessor produced by UMC, a Taiwanese semiconductor company, in the early- to mid-1990s. It was offered as an alternative to the Intel 80486 with which it was pin compatible, enabling it to be installed in most 80486 motherboards. All models had power management features intended to reduce electricity consumption.
context_section_description: The UMC Green CPU was an x86-compatible microprocessor produced by UMC, a Taiwanese semiconductor company, in the early- to mid-1990s. It was offered as an alternative to the Intel 80486 with which it was pin compatible, enabling it to be installed in most 80486 motherboards. All models had power management features intended to reduce electricity consumption.
caption: A UMC U5SD microprocessor rated for 40 MHz motherboards.
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