The PM5 Series of enterprise SAS SSDs, a high-performance flash storage.
The main benefit of a ssd is low latency. It is 50x faster than a hard drive doing small random I/O. That is what the os does 90% of the time. Using sata II does not impact the performance hardly at all.When doing sequential operations on sata II, the transfer rate will be capped at 250mb/s or so.
That is still 2x what the best hard drives do. Sata 3 upps that to the 550 range.Bottom line- Go ahead and buy the evo, it will be one of the best performance upgrades you ever buy.The advantage of the newer pcie based devices is the possibility of upping the sequential transfer rates from 550 to perhaps 1000. The actual benefit will not be that great.And. Buy a larger ssd if you can. The extra nand chips increase the sequential performance some. The main benefit of a ssd is low latency.
It is 50x faster than a hard drive doing small random I/O. That is what the os does 90% of the time. Using sata II does not impact the performance hardly at all.When doing sequential operations on sata II, the transfer rate will be capped at 250mb/s or so. That is still 2x what the best hard drives do. Sata 3 upps that to the 550 range.Bottom line- Go ahead and buy the evo, it will be one of the best performance upgrades you ever buy.The advantage of the newer pcie based devices is the possibility of upping the sequential transfer rates from 550 to perhaps 1000. The actual benefit will not be that great.And. Buy a larger ssd if you can.
The extra nand chips increase the sequential performance some.
SAS series SeriesModel numberDWPDInterfaceFlash MemoryStorage capacityEncryptionfeatureFormfactorKPM51RUG.1SAS12.0 Gbit/sBiCS FLASHâ„¢TLC15,360 GB7,680 GB3,840 GB1,920 GB960 GB480 GB-2.5-inchKPM5XRUG.SIEKPM5VRUG.SEDKPM5WRUG.SED FIPSPX05SRB.SAS12.0 Gbit/sMLC4,000 GB2,000 GB1,000 GB500 GB-2.5-inchPX05SRB.YSIEPX05SRQ.3,840 GB1,920 GB960 GB480 GBSEDPX05SRQ.BSED FIPSPX05SLB.0.5SAS12.0 Gbit/sMLC4,000 GB2,000 GB-2.5-inchPX05SLB.YSIEPX05SLQ.SEDPX05SLQ.BSED FIPS. Definition of capacity:Â Toshiba Memory Corporation defines a megabyte (MB) as 1,000,000 bytes, a gigabyte (GB) as 1,000,000,000 bytes and a terabyte (TB) as 1,000,000,000,000 bytes. A computer operating system, however, reports storage capacity using powers of 2 for the definition of 1GB = 2 30 = 1,073,741,824 bytes and therefore shows less storage capacity. Available storage capacity (including examples of various media files) will vary based on file size, formatting, settings, software and operating system, such as Microsoft Operating System and/or pre-installed software applications, or media content. Actual formatted capacity may vary.
DWPD: Drive Write Per Day. One full drive write per day means the drive can be written and re-written to full capacity once a day every day for five years, the stated product warranty period. Actual results may vary due to system configuration, usage and other factors. Read and write speed may vary depending on the host device, read and write conditions, and file size. PCIe and PCI Express are registered trademarks of PCI-SIG. NVMe is a trademark of NVM Express, Inc. All company names, product names and service names may be trademarks of their respective companies.