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IT - S21
Storage types
| Term | Definition |
|---|---|
| ECC Memory | Error Correcting Code memory. A a specialized type of RAM that detects and fixes internal data corruption in real-time. Found in DDR5. |
| DDR3 | Memory that works at about 800 to 2122 MT/s |
| DDR4 | Most modern computer memory use this. Data rates at 1600 to 3200 MT/s |
| DDR5 | Latest Memory standard. Data rates from 4800 MT/s to 6400 MT/s and beyond. |
| PCI | Peripheral Component Internconnect |
| PCIe | Peripheral Component Interconnect extended. The cables or 'bus', which are designed to enable very high transmission speeds |
| M.2 | Module 2. - The form or shape of the SSD cards |
| NVMe | Non Volatile Memory Express. The design of the communication processes that allow data to be sent very fast. |
| SATA | Serial Advanced Technology Attachment |
| SSD | Solid State Drive |
| HDD | Hard Disc Drive |
| mSATA | mini SATA or Serial Advanced Technology Attachment |
| SATA 1 | SATA 1.5 Gbps |
| LGA | Land Grid Array - Motherboard processor connector |
| PGA | Pin Grid Array - Motherboard processor connector |
| USB 3 | Universal Serial Bus - Offers speeds for 5 Gbit/s or higher for newer versions |
| eSATA | External Serial Advanced Technology Attachment. About as fast as USB 3.0 |
| ESD | Electro Static Discharge |
| DDR | Double Data Rate |
| SDRAM | Synchronous Dynamic RAM |
| RAM | Random Access Memory |
| ROM | Read Only Memory |
| Cache | The very super high speed memory found the actual CPU processors. |
| L1 and L2 cache | Very high speed memory designed to sit very close to each CPU core. The fastest memory available in a typical PC |
| Level 3 cache | Very high speed memory, designed into the processor but which is often shared across the miltiple cores on the modern processor. |
| Von Neumann Architecture | The fundamental design for most modern computers. Consisting or a brain, memory, storage and Input / Output (or IO) devices. |
| Harvard Architecture | Similar to Von Neumann, but has separate data channels for the computer's instruction set or OS and the working memory. |