SDR (Single Data Rate)

[ɛs-di-ɑr / ˈsɪŋɡəl ˈdeɪtə reɪt]
noun
SDR (Taxa de Dados Única) / Memória de Taxa de Dados Única
1. A type of SDRAM (Synchronous Dynamic Random Access Memory) that transfers data once per clock cycle, as opposed to DDR which transfers twice per cycle
The older computer used SDR memory modules that operated at slower speeds than modern DDR variants.
O computador mais antigo usava módulos de memória SDR que operavam em velocidades mais lentas do que as variantes modernas de DDR.
2. A memory technology standard introduced in the mid-1990s that synchronized memory operations with the system clock
SDR was gradually replaced by DDR memory as computing performance demands increased.
SDR foi gradualmente substituído pela memória DDR conforme as demandas de desempenho computacional aumentaram.
SDR is primarily discussed in technical and historical contexts within IT communities in both Brazil and the USA. As this technology became obsolete in the early 2000s, references are mainly found in discussions about computer history, retro computing, or when explaining the evolution of memory technologies. The acronym is universally retained in Portuguese technical literature.
Synonyms / Sinônimos
SDRAMSynchronous DRAMSingle Data Rate SDRAMSDRAM PC100SDRAM PC133
Antonyms / Antônimos
DDR (Double Data Rate)DDR2DDR3DDR4DDR5

Regional Variations

General Brazilian
SDR / Memória SDR
Used in technical contexts; acronym is typically kept in English
Rio de Janeiro
SDR / Taxa de Dados Única
Technical terminology used in IT communities
São Paulo
SDR / Memória de Taxa Única
Commonly used in technology sector and computing discussions
Portugal
SDR / Memória de Taxa Simples de Dados
Less commonly referenced as the technology is largely obsolete

Related Words

DDR memoryDRAMRAMmemory moduleclock cyclebandwidthmemory buslatency

Related Idioms & Phrases

Legacy memory technology
Outdated memory standard
Pre-DDR era memory
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