AS4C128M8D3LB-12BCN vs IS25WP256D-RHLE
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | Alliance Memory, Inc. | ISSI, Integrated Silicon Solution Inc |
| Description | IC DRAM 1GBIT PARALLEL 78FBGA | IC FLSH 256MBIT SPI/QUAD 24TFBGA |
| Package | Tray | Bulk |
| Series | - | - |
| Voltage - Supply | 1.283V ~ 1.45V | 1.65V ~ 1.95V |
| Operating Temperature | 0°C ~ 95°C (TC) | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 78-VFBGA | 24-TBGA |
| Supplier Device Package | 78-FBGA (8x10.5) | 24-TFBGA (6x8) |
| Memory Size | 1Gb (128M x 8) | 256Mb (32M x 8) |
| Technology | SDRAM - DDR3L | FLASH - NOR |
| Memory Type | Volatile | Non-Volatile |
| Clock Frequency | 800 MHz | 104 MHz |
| Access Time | 20 ns | - |
| Memory Format | DRAM | FLASH |
| Write Cycle Time - Word, Page | 15ns | 800µs |
| Memory Interface | Parallel | SPI - Quad I/O, QPI, DTR |
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1. What is memory and what does it do?
Memory is a computer component that stores data and instructions. It can be temporary (volatile storage) or permanent (non-volatile storage) and is used to support system operation and data storage.
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2. How to choose the right memory type?
When choosing a memory type, you need to consider speed, capacity, durability and cost according to application requirements. For example, SSD is suitable for data that needs to be accessed quickly, HDD is suitable for large-capacity data storage, and RAM is suitable for high-speed computing.
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3. What is virtual memory and how does it work?
Virtual memory is a technology that uses hard disk space as memory, allowing the system to use hard disk space to expand memory when physical RAM is insufficient, improving the system's multitasking capabilities.
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4. What is High Bandwidth Memory (HBM) and what are its advantages?
HBM is a high-bandwidth, low-latency memory technology commonly used in graphics cards and AI accelerators that can handle a large number of parallel computing tasks. HBM's stacked architecture makes it take up less space and more efficient, making it an ideal choice for big data and high-performance computing applications.
