AHCI Not found in Bios

Good day,
I recently installed a Samsung 850 EVO SSD drive to my old Gateway GT 5676.
OS Windows 7 Home premium 64bit SP 1.
CPU AMD Phenom Quad Core 9600 2.3 GHz.
Motherboard 4006272R - Foxconn (Bengal) RS780 Motherboard.
Memory 8GB of DDR2.
Graphics Card(s) Integrated ATI Radeon HD 3200 video /Sapphire Radeon HD 3470.
Sound Card Integrated ALC888S HD codec 7.1.
Monitor 19" Samsung SyncMaster.
Hard Drives One Internal Samsung SSD 850 EVO.
One Internal 320 GB 7200 RPM SATA II hard drive.
PSU Ultra LSP 650W
Case Gateway 5-Bay uATX Computer Case.
Cooling CPU - Arctic Cooler Freezer 64.
Keyboard HP.
Mouse Logitech Laser.
Before Installing Windows 7 HP and wanting to take advantage of the drives "Trim" function, I checked the bios settings in "Integrated Peripherals"
I was hoping to change the on-board sata mode to AHCI.
I couldn't find the AHCI setting anywhere! This board is SATA II only, Would this board (foxconn (bengal) rs780 Rev 1.0) be to old to be able to select the AHCI mode?

The drive did come with software, which I did not install.

Thanks
N2

Hi,
I doubt it has it
I would imagine an old computer would have old legacy bios.

Why do you need it ahci ?

You'd probably read references to trim here,
SSD - Install and Transfer the Operating System

Not really windows is more than capable of using trim instead defragment on a ssd,
I believe there is a command prompt string to enter to confirm trim is enabled but I can't remember it

Here you go follow this,
Show Us Your WEI [4]

I don't like that bench test it seems to be full of it with sh in front

Very wild results from it on my older system

Might be good for the example Derek was referring to though but don't focus on the numbers too much
The real test is actual usage which should knock your socks off now :)