[question]Acer Aspire 4810Tg BIOS && sata 2 speed ?

[370391]

my bios update :


[- Manufacturer: Acer
- Model: Aspire 4410 / 4810 /5410 / 5810
- Bios revision: 1.35
- Bios Type: Insyde BIOS
- Bios Link: http://global-download.acer.com/GDFiles/...SC=EMEA_27
- Bios file: GPC_V135.fd
- Modifier: mask89


Modification details:
- Display Mode Configure Type: Integrated, Discrete, Switchable graphic
- unlocked Intel Page in Main tab (Set User Access Level in Security tab to Full)
- unlocked Enhanced Intel SpeedStep Technology (EIST)



DOS: Run "FLASH.BAT" to flash BIOS.
Windows x86/x64: Launch "JM4151135.exe" to flash BIOS.]


bios update after in first boot os , sata speed can running 3 gb/s && hdd tune shows read speed very high (only first can )

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but now irst check to sata speed 1.5 gb/s && hdd tune shows read speed very slow .


why ?? :
bios had modfity but sata not ok ?