PCIe

PCIe是一种物理接口：Peripheral Component Interconnect Express，替换PCI、PCI-X、AGP等接口

M.2

M.2是一种物理接口：Next Generation Form Factor (NGFF)，替换mSATA接口，一般用于笔记本，和U.2是竞争关系，使用PCIe MiniCard的物理布局，支持AHCI和NVMe控制接口。可以用于SSD、NFC、WIFI、BT等设备

U.2

U.2是一种物理接口： formerly known as SFF-8639, is a computer interface for connecting SSDs to a computer. It uses up to four PCI Express lanes。这个可能是SATA Express的后续演进。不支持NVMe

AHCI

AHCI是一种逻辑接口：Advanced Host Controller Interface。Intel发明用于管理SATA设备。 AHCI gives software developers and hardware designers a standard method for detecting, configuring, and programming SATA/AHCI adapters. AHCI is separate from the SATA 3 Gbit/s standard, although it exposes SATA’s advanced capabilities

NVME

NVMe是一种逻辑接口：Non-Volatile Memory Host Controller Interface Specification (NVMHCIS) 。针对非易失性存储外设，支持各种各样的形态，包括上面提到各种存储设备接口，NVM Express allows host hardware and software to fully exploit the levels of parallelism possible in modern SSDs. As a result, NVM Express reduces I/O overhead and brings various performance improvements relative to previous logical-device interfaces, including multiple, long command queues, and reduced latency。在存储领域，NVMe必然会替换AHCI

主控

  • Marvel: 88SS9187,较优秀
  • Intel: 优秀
  • SamSung: S3C29MAX01/S4LJ204X01,
  • OCZ: BF3 M10,较好
  • SandForce: SF-2281,较差. SF-3700,换成pci-e接口
  • LAMD: LM87800AA,优秀,企业级SSD主控
  • Phison: PS3108,低端用
  • Jmicro: JMF616/66X,低端用, JMF667H,中端

闪存芯片

  • SLC
  • MLC
  • TLC

性能测试

  • Seq 持续读写能力,不重要
  • 4K 随机单队列深度测试,重要
  • 4K-64Thrd 随机64队列深度测试
  • Acc.time 随机写入时间

厂家

  • Intel
  • 美光: m4, m500,mx100
  • 浦科特: M5S
  • 影驰: 黑将,虎将,战将
  • sandisk: 高速,x110