ECC memory

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ECC memory

(Error-Correcting Code memory) A memory system that tests for and corrects errors automatically, very often without the operating system being aware of it, let alone the user. As data are written into memory, ECC circuitry generates checksums from the binary sequences in the bytes and stores them in an additional seven bits of memory for 32-bit data paths or eight bits for 64-bit paths. When data are retrieved from memory, the checksum is recomputed to determine if any of the data bits have been corrupted. Such systems can typically detect and automatically correct errors of one bit per word and can detect, but not correct, errors greater than one bit. See EOS memory, chipkill, checksum and parity checking.

               Errors      Errors               It Can      It CanMemory Type    Detect      Correct

  Non-parity     Nothing     Nothing

  Parity         1 bit       Nothing

  ECC            1-2 bits    1 bit
References in periodicals archive ?
The 2017 iMac Pro also houses 128GB of ECC RAM and a Radeon Pro Vega 64 graphics card with 16GB of HBM2 memory.
The company is currently ready to ship its new iMac Pro all-in-one desktop PCs which come with Intel Xeon processors with up to 18 cores, AMD Vega 64 graphics, 128GB DDR4 ECC RAM and 4TB PCIe based SSD drives.
2 POWER9-compatible CPU sockets 16 DDR4 ECC RAM slots 3 PCIe 4.
Upgrading from the previous generation of DDR3 RAM, these NAS are equipped with 4GB (expandable to 64GB) DDR4 ECC RAM.
equipped with 4GB ECC RAM, which is expandable to 32GB.
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0GHz PowerPC G5 processor with 512MB of PC3200 ECC RAM, a single 80GB Apple Drive Module with expandability for up to 750GB, dual Gigabit Ethernet on-board, FireWire 800 and USB 2.
0 GHz PowerPC G5 processors with 1GB of PC3200 ECC RAM, a single 80GB Apple Drive Module with expandability for up to 750GB, dual Gigabit Ethernet on-board, FireWire 800 and USB 2.
2004) benchmark test performed by Dell Labs in March and April 2006 on a PowerEdge 2850 configured with 2 GB DDR2 ECC RAM, two 3.
com/apples-pro-imac-slated-release-end-2017-2526759) IBTimes learned that one iMac model could come with an Intel Xeon E3-1285 processor and ECC RAM.
Available in single, dual and quad core Intel Atom E38xx configurations with up to 4GB of soldered ECC RAM and 8GB of embedded eMMC, the ReliaGATE 20-25 also includes wireless and wired connectivity options: two Gigabit Ethernet interfaces with Modbus support; WiFi; Bluetooth Low Energy; and cellular support.
The TS-EC879U-RP with ECC RAM further enhances system reliability.