Today I bought SanDisk Extreme USB 3.0 Flash Drive, in this day fastest affordable USB flash drive, SDCZ80-064G G46 series for Europe. (manufacturer’s website)
It came preformated with FAT32.
Overall performance with FAT 32 on WIndows 7 x64 HP EliteBook 8560w USB 3 drivers enabled write speed 47 MB / sec read 120 MB / sec.
On Ubuntu 12.04 x64 HP EliteBook 8540w USB 3 driver enabled (see lsusb output below), write speed up to 90 MB / sec read average 101 MB / sec.
Unpartitioned ( so theory )
After removing partitions I ran bench-marking software from Disk Utility on Ubuntu, write speed up to 96.3 MB / sec but average just over 80 MB / sec. Read speed maximum 146.5 MB /sec on average 140.5 MB / sec see graph below.
NTFS
Because I use both Windows and Ubuntu machines, disk is now formated to NTFS, on larger files sizes range from 400 to 700 MB, read speed is up to 82 MB / sec and write speed up to 76 MB / sec – so back to earth 🙂
Lsusb output in tree
$ sudo lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
|__ Port 1: Dev 11, If 0, Class=stor., Driver=usb-storage, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/8p, 480M
|__ Port 3: Dev 6, If 0, Class=HID, Driver=usbhid, 12M
|__ Port 3: Dev 6, If 1, Class=HID, Driver=usbhid, 12M
|__ Port 3: Dev 6, If 2, Class=HID, Driver=usbhid, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/6p, 480M
|__ Port 5: Dev 7, If 0, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
|__ Port 5: Dev 7, If 1, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480Mlsusb verbose output for Bus 04
Bus 004 Device 011: ID 0781:5580 SanDisk Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 9
idVendor 0x0781 SanDisk Corp.
idProduct 0x5580
bcdDevice 0.10
iManufacturer 1 SanDisk
iProduct 2 Extreme
iSerial 3 AA011004141655014594
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 44
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 22
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
Latency Tolerance Messages (LTM) Supported
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 7 micro seconds
bU2DevExitLat 101 micro seconds
Device Status: 0x0000
(Bus Powered)Review:
Overall looks are fine, but product is too large (see photo below), so I can not work my mouse, USB 3 slots are only on one side of my notebook, same on all others in our office. Other USB flash drives we use are significantly smaller, person can work and have it plugged in, not this one.Â
Package photo unwrapped:
Product is made in China. Plastic cover does not look cheap, slide in – out mechanism works great, it has a lock so once ejected it does not slide in by creating pressure on the connector, you have to use the button, so this is big +Â