Just 150MB/s write in Blackmagic Disk Speed :(

I've bought Your (new) SSD. I've got Macbook Pro mid-2012. I've did 'clean' install Mac OSX Yosemite (latest system) - installed program Blackmagic Disk Speed test to check SSD speed - read is ok (about 500MB/s) but write speed is slow (about 150MB/s) which is far away from 500MB/s. Thing is - I've installed Windows 8.1 on my Macbook - and everything is ok - got about 500MB/s  read and write. What is wrong with latest Mac OSX Yosemite? Especially even if I did "fresh" install system.

Hello, the speeds you are getting seem to be line SATA 1 so you have to ensure that the hardware of the mac is compatible with the drive and is of course sata 3. also the trim function of the ssd is deactivated on a mac from default so maybe that was the issue with the mac?  

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  • What's the expected hard disk speed for Mac Mini?

    Hi all, I just bought my first Mac for use in my personal photo studio, a refurbed 2011 Mac Mini i5 2.5ghz. As I was setting up external drives and putting the mini through its paces, I ran a disk benchmark (BlackMagic Disk Speed Test) and got some pretty poor scores.
    My mini's internal drive hits roughly 40MB/s for both sequential read and sequential write. Am I correct in thinking that this is poor performance even for a 5400 rpm drive? The drive is mostly full; there are 50GB free. Would you recommend that I address this with Applecare?
    Here are two other Minis (same 5400 rpm drive) hitting much higher marks:
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    http://www.youtube.com/watch?v=uPksGswN8Uk#t=0m18s

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  • Hello, i just installed a vertex 2e 90gb ssd in my macbook pro 13" (8.1 early 2011). But when i do a disk speed test i only get 125 mb/s write speed and 146 mb/s read speed.

    Hello, i just installed a vertex 2e 90gb ssd in my macbook pro 13" (8.1 early 2011). But when i do a disk speed test i only get 125 mb/s write speed and 146 mb/s read speed. Thats under 50% of what i should get. The disk have firmware 1.35 and 3 gb/s linkspeed when i check in systemreport.
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  • How to find the max data transfer rate(disk speed) supported by mobo?

    I plan on replacing my current HDD with a new and bigger HDD.
    For this I need to know the max data transfer rate(disk speed) that my mobo will support. However, dmidecode is not telling me that. Am I missing something?
    Here's dmidecode:
    # dmidecode 2.11
    SMBIOS 2.5 present.
    80 structures occupying 2858 bytes.
    Table at 0x000F0450.
    Handle 0xDA00, DMI type 218, 101 bytes
    OEM-specific Type
    Header and Data:
    DA 65 00 DA B2 00 17 4B 0E 38 00 00 80 00 80 01
    00 02 80 02 80 01 00 00 A0 00 A0 01 00 58 00 58
    00 01 00 59 00 59 00 01 00 75 01 75 01 01 00 76
    01 76 01 01 00 05 80 05 80 01 00 D1 01 19 00 01
    00 15 02 19 00 02 00 1B 00 19 00 03 00 19 00 19
    00 00 00 4A 02 4A 02 01 00 0C 80 0C 80 01 00 FF
    FF 00 00 00 00
    Handle 0xDA01, DMI type 218, 35 bytes
    OEM-specific Type
    Header and Data:
    DA 23 01 DA B2 00 17 4B 0E 38 00 10 F5 10 F5 00
    00 11 F5 11 F5 00 00 12 F5 12 F5 00 00 FF FF 00
    00 00 00
    Handle 0x0000, DMI type 0, 24 bytes
    BIOS Information
    Vendor: Dell Inc.
    Version: A17
    Release Date: 04/06/2010
    Address: 0xF0000
    Runtime Size: 64 kB
    ROM Size: 4096 kB
    Characteristics:
    PCI is supported
    PNP is supported
    APM is supported
    BIOS is upgradeable
    BIOS shadowing is allowed
    ESCD support is available
    Boot from CD is supported
    Selectable boot is supported
    EDD is supported
    Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
    3.5"/720 kB floppy services are supported (int 13h)
    Print screen service is supported (int 5h)
    8042 keyboard services are supported (int 9h)
    Serial services are supported (int 14h)
    Printer services are supported (int 17h)
    ACPI is supported
    USB legacy is supported
    BIOS boot specification is supported
    Function key-initiated network boot is supported
    Targeted content distribution is supported
    BIOS Revision: 17.0
    Handle 0x0100, DMI type 1, 27 bytes
    System Information
    Manufacturer: Dell Inc.
    Product Name: OptiPlex 755
    Version: Not Specified
    UUID: 44454C4C-5900-1050-8033-C4C04F434731
    Wake-up Type: Power Switch
    SKU Number: Not Specified
    Family: Not Specified
    Handle 0x0200, DMI type 2, 8 bytes
    Base Board Information
    Manufacturer: Dell Inc.
    Product Name: 0PU052
    Version:
    Handle 0x0300, DMI type 3, 13 bytes
    Chassis Information
    Manufacturer: Dell Inc.
    Type: Space-saving
    Lock: Not Present
    Version: Not Specified
    Asset Tag:
    Boot-up State: Safe
    Power Supply State: Safe
    Thermal State: Safe
    Security Status: None
    Handle 0x0400, DMI type 4, 40 bytes
    Processor Information
    Socket Designation: CPU
    Type: Central Processor
    Family: Xeon
    Manufacturer: Intel
    ID: 76 06 01 00 FF FB EB BF
    Signature: Type 0, Family 6, Model 23, Stepping 6
    Flags:
    FPU (Floating-point unit on-chip)
    VME (Virtual mode extension)
    DE (Debugging extension)
    PSE (Page size extension)
    TSC (Time stamp counter)
    MSR (Model specific registers)
    PAE (Physical address extension)
    MCE (Machine check exception)
    CX8 (CMPXCHG8 instruction supported)
    APIC (On-chip APIC hardware supported)
    SEP (Fast system call)
    MTRR (Memory type range registers)
    PGE (Page global enable)
    MCA (Machine check architecture)
    CMOV (Conditional move instruction supported)
    PAT (Page attribute table)
    PSE-36 (36-bit page size extension)
    CLFSH (CLFLUSH instruction supported)
    DS (Debug store)
    ACPI (ACPI supported)
    MMX (MMX technology supported)
    FXSR (FXSAVE and FXSTOR instructions supported)
    SSE (Streaming SIMD extensions)
    SSE2 (Streaming SIMD extensions 2)
    SS (Self-snoop)
    HTT (Multi-threading)
    TM (Thermal monitor supported)
    PBE (Pending break enabled)
    Version: Not Specified
    Voltage: 0.0 V
    External Clock: 1333 MHz
    Max Speed: 5200 MHz
    Current Speed: 2666 MHz
    Status: Populated, Enabled
    Upgrade: Socket LGA775
    L1 Cache Handle: 0x0700
    L2 Cache Handle: 0x0701
    L3 Cache Handle: Not Provided
    Serial Number: Not Specified
    Asset Tag: Not Specified
    Part Number: Not Specified
    Core Count: 2
    Core Enabled: 2
    Thread Count: 2
    Characteristics:
    64-bit capable
    Handle 0x0700, DMI type 7, 19 bytes
    Cache Information
    Socket Designation: Not Specified
    Configuration: Enabled, Not Socketed, Level 1
    Operational Mode: Write Back
    Location: Internal
    Installed Size: 32 kB
    Maximum Size: 32 kB
    Supported SRAM Types:
    Other
    Installed SRAM Type: Other
    Speed: Unknown
    Error Correction Type: None
    System Type: Data
    Associativity: 8-way Set-associative
    Handle 0x0701, DMI type 7, 19 bytes
    Cache Information
    Socket Designation: Not Specified
    Configuration: Enabled, Not Socketed, Level 2
    Operational Mode: Varies With Memory Address
    Location: Internal
    Installed Size: 6144 kB
    Maximum Size: 6144 kB
    Supported SRAM Types:
    Other
    Installed SRAM Type: Other
    Speed: Unknown
    Error Correction Type: Single-bit ECC
    System Type: Unified
    Associativity: <OUT OF SPEC>
    Handle 0x0800, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: PARALLEL
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: DB-25 female
    Port Type: Parallel Port PS/2
    Handle 0x0801, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: SERIAL1
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: DB-9 male
    Port Type: Serial Port 16550A Compatible
    Handle 0x0802, DMI type 126, 9 bytes
    Inactive
    Handle 0x0803, DMI type 126, 9 bytes
    Inactive
    Handle 0x0804, DMI type 126, 9 bytes
    Inactive
    Handle 0x0805, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB1
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x0806, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB2
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x0807, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB3
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x0808, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB4
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x0809, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB5
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x080A, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB6
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x080B, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB7
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x080C, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: USB8
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Access Bus (USB)
    Port Type: USB
    Handle 0x080D, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: ENET
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: RJ-45
    Port Type: Network Port
    Handle 0x080E, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: MIC
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Mini Jack (headphones)
    Port Type: Audio Port
    Handle 0x080F, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: LINE-OUT
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Mini Jack (headphones)
    Port Type: Audio Port
    Handle 0x0810, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: LINE-IN
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Mini Jack (headphones)
    Port Type: Audio Port
    Handle 0x0811, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: HP-OUT
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: Mini Jack (headphones)
    Port Type: Audio Port
    Handle 0x0812, DMI type 8, 9 bytes
    Port Connector Information
    Internal Reference Designator: MONITOR
    Internal Connector Type: None
    External Reference Designator: Not Specified
    External Connector Type: DB-15 female
    Port Type: Video Port
    Handle 0x090A, DMI type 9, 13 bytes
    System Slot Information
    Designation: SLOT1
    Type: x1 Proprietary
    Current Usage: In Use
    Length: Long
    Characteristics:
    PME signal is supported
    Handle 0x0901, DMI type 126, 13 bytes
    Inactive
    Handle 0x0902, DMI type 9, 13 bytes
    System Slot Information
    Designation: SLOT2
    Type: 32-bit PCI
    Current Usage: Available
    Length: Long
    ID: 2
    Characteristics:
    5.0 V is provided
    3.3 V is provided
    PME signal is supported
    Handle 0x0903, DMI type 126, 13 bytes
    Inactive
    Handle 0x0904, DMI type 126, 13 bytes
    Inactive
    Handle 0x0905, DMI type 126, 13 bytes
    Inactive
    Handle 0x0906, DMI type 126, 13 bytes
    Inactive
    Handle 0x0907, DMI type 126, 13 bytes
    Inactive
    Handle 0x0908, DMI type 126, 13 bytes
    Inactive
    Handle 0x0A00, DMI type 10, 6 bytes
    On Board Device Information
    Type: Video
    Status: Disabled
    Description: Intel Graphics Media Accelerator 950
    Handle 0x0A02, DMI type 10, 6 bytes
    On Board Device Information
    Type: Ethernet
    Status: Enabled
    Description: Intel Gigabit Ethernet Controller
    Handle 0x0A03, DMI type 10, 6 bytes
    On Board Device Information
    Type: Sound
    Status: Enabled
    Description: Intel(R) High Definition Audio Controller
    Handle 0x0B00, DMI type 11, 5 bytes
    OEM Strings
    String 1: www.dell.com
    Handle 0x0D00, DMI type 13, 22 bytes
    BIOS Language Information
    Language Description Format: Long
    Installable Languages: 1
    en|US|iso8859-1
    Currently Installed Language: en|US|iso8859-1
    Handle 0x0F00, DMI type 15, 29 bytes
    System Event Log
    Area Length: 2049 bytes
    Header Start Offset: 0x0000
    Header Length: 16 bytes
    Data Start Offset: 0x0010
    Access Method: Memory-mapped physical 32-bit address
    Access Address: 0xFFF01000
    Status: Valid, Not Full
    Change Token: 0x00000018
    Header Format: Type 1
    Supported Log Type Descriptors: 3
    Descriptor 1: POST error
    Data Format 1: POST results bitmap
    Descriptor 2: System limit exceeded
    Data Format 2: System management
    Descriptor 3: Log area reset/cleared
    Data Format 3: None
    Handle 0x1000, DMI type 16, 15 bytes
    Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 8 GB
    Error Information Handle: Not Provided
    Number Of Devices: 4
    Handle 0x1100, DMI type 17, 27 bytes
    Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_1
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: AD00000000000000
    Handle 0x1101, DMI type 17, 27 bytes
    Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_3
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Handle 0x1102, DMI type 17, 27 bytes
    Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_2
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Handle 0x1103, DMI type 17, 27 bytes
    Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_4
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Handle 0x1300, DMI type 19, 15 bytes
    Memory Array Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x000FDFFFFFF
    Range Size: 4064 MB
    Physical Array Handle: 0x1000
    Partition Width: 1
    Handle 0x1400, DMI type 20, 19 bytes
    Memory Device Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 2 GB
    Physical Device Handle: 0x1100
    Memory Array Mapped Address Handle: 0x1300
    Partition Row Position: 1
    Interleave Position: 1
    Interleaved Data Depth: 1
    Handle 0x1401, DMI type 20, 19 bytes
    Memory Device Mapped Address
    Starting Address: 0x00080000000
    Ending Address: 0x000FDFFFFFF
    Range Size: 2016 MB
    Physical Device Handle: 0x1101
    Memory Array Mapped Address Handle: 0x1300
    Partition Row Position: 1
    Interleave Position: 1
    Interleaved Data Depth: 1
    Handle 0x1402, DMI type 20, 19 bytes
    Memory Device Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 2 GB
    Physical Device Handle: 0x1102
    Memory Array Mapped Address Handle: 0x1300
    Partition Row Position: 1
    Interleave Position: 2
    Interleaved Data Depth: 1
    Handle 0x1403, DMI type 20, 19 bytes
    Memory Device Mapped Address
    Starting Address: 0x00080000000
    Ending Address: 0x000FDFFFFFF
    Range Size: 2016 MB
    Physical Device Handle: 0x1103
    Memory Array Mapped Address Handle: 0x1300
    Partition Row Position: 1
    Interleave Position: 2
    Interleaved Data Depth: 1
    Handle 0x1410, DMI type 126, 19 bytes
    Inactive
    Handle 0x1800, DMI type 24, 5 bytes
    Hardware Security
    Power-On Password Status: Enabled
    Keyboard Password Status: Not Implemented
    Administrator Password Status: Enabled
    Front Panel Reset Status: Not Implemented
    Handle 0x1900, DMI type 25, 9 bytes
    System Power Controls
    Next Scheduled Power-on: *-* 00:00:00
    Handle 0x1B10, DMI type 27, 12 bytes
    Cooling Device
    Type: Fan
    Status: OK
    OEM-specific Information: 0x0000DD00
    Handle 0x1B11, DMI type 27, 12 bytes
    Cooling Device
    Type: Fan
    Status: OK
    OEM-specific Information: 0x0000DD01
    Handle 0x1B12, DMI type 126, 12 bytes
    Inactive
    Handle 0x1B13, DMI type 126, 12 bytes
    Inactive
    Handle 0x1B14, DMI type 126, 12 bytes
    Inactive
    Handle 0x2000, DMI type 32, 11 bytes
    System Boot Information
    Status: No errors detected
    Handle 0x8100, DMI type 129, 8 bytes
    OEM-specific Type
    Header and Data:
    81 08 00 81 01 01 02 01
    Strings:
    Intel_ASF
    Intel_ASF_001
    Handle 0x8200, DMI type 130, 20 bytes
    OEM-specific Type
    Header and Data:
    82 14 00 82 24 41 4D 54 01 01 00 00 01 A5 0B 02
    00 00 00 00
    Handle 0x8300, DMI type 131, 64 bytes
    OEM-specific Type
    Header and Data:
    83 40 00 83 14 00 00 00 00 00 C0 29 05 00 00 00
    F8 00 4E 24 00 00 00 00 0D 00 00 00 02 00 03 00
    19 04 14 00 01 00 01 02 C8 00 BD 10 00 00 00 00
    00 00 00 00 FF 00 00 00 00 00 00 00 00 00 00 00
    Handle 0x8800, DMI type 136, 6 bytes
    OEM-specific Type
    Header and Data:
    88 06 00 88 5A 5A
    Handle 0xD000, DMI type 208, 10 bytes
    OEM-specific Type
    Header and Data:
    D0 0A 00 D0 01 03 FE 00 11 02
    Handle 0xD100, DMI type 209, 12 bytes
    OEM-specific Type
    Header and Data:
    D1 0C 00 D1 78 03 07 03 04 0F 80 05
    Handle 0xD200, DMI type 210, 12 bytes
    OEM-specific Type
    Header and Data:
    D2 0C 00 D2 F8 03 04 03 06 80 04 05
    Handle 0xD201, DMI type 126, 12 bytes
    Inactive
    Handle 0xD400, DMI type 212, 242 bytes
    OEM-specific Type
    Header and Data:
    D4 F2 00 D4 70 00 71 00 00 10 2D 2E 42 00 11 FE
    01 43 00 11 FE 00 0F 00 25 FC 00 10 00 25 FC 01
    11 00 25 FC 02 12 00 25 FC 03 00 00 25 F3 00 00
    00 25 F3 04 00 00 25 F3 08 00 00 25 F3 0C 07 00
    23 8F 00 08 00 23 F3 00 09 00 23 F3 04 0A 00 23
    F3 08 0B 00 23 8F 10 0C 00 23 8F 20 0E 00 23 8F
    30 0D 00 23 8C 40 A6 00 23 8C 41 A7 00 23 8C 42
    05 01 22 FD 02 06 01 22 FD 00 8C 00 22 FE 00 8D
    00 22 FE 01 9B 00 25 3F 40 9C 00 25 3F 00 09 01
    25 3F 80 A1 00 26 F3 00 A2 00 26 F3 08 A3 00 26
    F3 04 9F 00 26 FD 02 A0 00 26 FD 00 9D 00 11 FB
    04 9E 00 11 FB 00 54 01 23 7F 00 55 01 23 7F 80
    5C 00 78 BF 40 5D 00 78 BF 00 04 80 78 F5 0A 01
    A0 78 F5 00 93 00 7B 7F 80 94 00 7B 7F 00 8A 00
    37 DF 20 8B 00 37 DF 00 03 C0 67 00 05 FF FF 00
    00 00
    Handle 0xD401, DMI type 212, 172 bytes
    OEM-specific Type
    Header and Data:
    D4 AC 01 D4 70 00 71 00 03 40 59 6D 2D 00 59 FC
    02 2E 00 59 FC 00 6E 00 59 FC 01 E0 01 59 FC 03
    28 00 59 3F 00 29 00 59 3F 40 2A 00 59 3F 80 2B
    00 5A 00 00 2C 00 5B 00 00 55 00 59 F3 00 6D 00
    59 F3 04 8E 00 59 F3 08 8F 00 59 F3 00 00 00 55
    FB 04 00 00 55 FB 00 23 00 55 7F 00 22 00 55 7F
    80 F5 00 58 BF 40 F6 00 58 BF 00 EB 00 55 FE 00
    EA 00 55 FE 01 40 01 54 EF 00 41 01 54 EF 10 ED
    00 54 F7 00 F0 00 54 F7 08 4A 01 53 DF 00 4B 01
    53 DF 20 4C 01 53 7F 00 4D 01 53 7F 80 68 01 56
    BF 00 69 01 56 BF 40 FF FF 00 00 00
    Handle 0xD402, DMI type 212, 152 bytes
    OEM-specific Type
    Header and Data:
    D4 98 02 D4 70 00 71 00 00 10 2D 2E 2D 01 21 FE
    01 2E 01 21 FE 00 97 00 22 FB 00 98 00 22 FB 04
    90 00 11 CF 00 91 00 11 CF 20 92 00 11 CF 10 E2
    00 27 7F 00 E3 00 27 7F 80 E4 00 27 BF 00 E5 00
    27 BF 40 D1 00 22 7F 80 D2 00 22 7F 00 45 01 22
    BF 40 44 01 22 BF 00 36 01 21 F1 06 37 01 21 F1
    02 38 01 21 F1 00 39 01 21 F1 04 2B 01 11 7F 80
    2C 01 11 7F 00 4E 01 65 CF 00 4F 01 65 CF 10 D4
    01 65 F3 00 D5 01 65 F3 04 D2 01 65 FC 00 D3 01
    65 FC 01 FF FF 00 00 00
    Handle 0xD403, DMI type 212, 157 bytes
    OEM-specific Type
    Header and Data:
    D4 9D 03 D4 70 00 71 00 03 40 59 6D 17 01 52 FE
    00 18 01 52 FE 01 19 01 52 FB 00 1A 01 52 FB 04
    1B 01 52 FD 00 1C 01 52 FD 02 1D 01 52 F7 00 1E
    01 52 F7 08 1F 01 52 EF 00 20 01 52 EF 10 21 01
    52 BF 00 22 01 52 BF 40 87 00 59 DF 20 88 00 59
    DF 00 E8 01 66 FD 00 E9 01 66 FD 02 02 02 53 BF
    00 03 02 53 BF 40 04 02 53 EF 00 05 02 53 EF 10
    06 02 66 DF 00 07 02 66 DF 20 08 02 66 EF 00 09
    02 66 EF 10 17 02 66 F7 00 18 02 66 F7 08 44 02
    52 BF 40 45 02 52 BF 00 FF FF 00 00 00
    Handle 0xD800, DMI type 126, 9 bytes
    Inactive
    Handle 0xDD00, DMI type 221, 19 bytes
    OEM-specific Type
    Header and Data:
    DD 13 00 DD 00 01 00 00 00 10 F5 00 00 00 00 00
    00 00 00
    Handle 0xDD01, DMI type 221, 19 bytes
    OEM-specific Type
    Header and Data:
    DD 13 01 DD 00 01 00 00 00 11 F5 00 00 00 00 00
    00 00 00
    Handle 0xDD02, DMI type 221, 19 bytes
    OEM-specific Type
    Header and Data:
    DD 13 02 DD 00 01 00 00 00 12 F5 00 00 00 00 00
    00 00 00
    Handle 0xDE00, DMI type 222, 16 bytes
    OEM-specific Type
    Header and Data:
    DE 10 00 DE C1 0B 00 00 10 05 19 21 01 00 00 01
    Handle 0x7F00, DMI type 127, 4 bytes
    End Of Table
    Hdparm also does not tell me the max data transfer rate (disk speed) of my current drive although this link : www.wdc.com/en/library/sata/2879-001146.pdf  says that it is 3.0Gb/s
    and here's hdparm -I /dev/sda
    /dev/sda:
    ATA device, with non-removable media
    Model Number: WDC WD800JD-75JNC0
    Firmware Revision: 06.01C06
    Standards:
    Supported: 6 5 4
    Likely used: 8
    Configuration:
    Logical max current
    cylinders 16383 16383
    heads 16 16
    sectors/track 63 63
    CHS current addressable sectors: 16514064
    LBA user addressable sectors: 156250000
    Logical/Physical Sector size: 512 bytes
    device size with M = 1024*1024: 76293 MBytes
    device size with M = 1000*1000: 80000 MBytes (80 GB)
    cache/buffer size = 8192 KBytes
    Capabilities:
    LBA, IORDY(can be disabled)
    Standby timer values: spec'd by Standard, with device specific minimum
    R/W multiple sector transfer: Max = 16 Current = 8
    Recommended acoustic management value: 128, current value: 254
    DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
    Cycle time: min=120ns recommended=120ns
    PIO: pio0 pio1 pio2 pio3 pio4
    Cycle time: no flow control=120ns IORDY flow control=120ns
    Commands/features:
    Enabled Supported:
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