HP ZBook 15 G2 - Page 16

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Technical white paper | HP ZBook 15 G2 Mobile Workstation
Performance advantage with HP Z Turbo Drive
As previously mentioned, current mSATA SSDs connected via a SATA connection are performance limited by the 6 Gb/s
ceiling of the SATA bus. With the implementation of the M.2 specication and use of PCIe SSD devices, performance levels
now exceed 6 Gb/s.
The HP ZBook 15 G2 takes advantage of this opportunity with introduction of HP Z Turbo Drive. The HP Z Turbo Drive is
a PCIe SSD storage device built on the industry standard M.2 form factor connected to the PCIe bus via the M.2 interface.
In an HP ZBook 15 G2 the HP Z Turbo Drive connects to two lanes of PCIe G2 while four lanes of PCIe are utilized in HP Z
Desktop Workstations.
HP Z Turbo Drive HP Z Desktop Workstation HP ZBook 15 G2
Connection 4 PCIe G2 lanes
6
2 PCIe G2 lanes
Performance >1000 MB/s (read) >600 MB/s (read)
Sequential read 1080 MB/s 675 MB/s
Sequential write 800 MB/s 550 MB/s
The chart below shows a comparison of storage device performance measured in MB/s. Through direct connection to the
PCIe Bus the HP Z Turbo Drive is able to considerably exceed previous performance capabilities.
Detailed performance and benchmarking results
Figure 4.Sequential R/W performance* (MB/s)
2500
2000
1500
1000
500
0
2010 2011 2012 2013 2014 2015 2016
PCIe G2 x4
PCIe G2 x2
SSDs
SATA/SAS 6G
HDDs
HP Z Turbo Drive (Desktop)
HP Z Turbo Drive (Mobile)
PCIe SSD - HP Z Turbo Drive:
Revolutionary performance increases
SATA SSD: At performance ceiling
SATA HDD: At performance ceiling
1500
1000
500
0
Sequential writeSequential read
7200 SATA HDD
Samsung Enterprise SATA SSD
Micron M550 SATA SSD
HP Z Turbo Drive (PCIe SSD) Mobile
HP Z Turbo Drive (PCIe SSD) Desktop