Dell Vostro 320 AMIBIOS8 unlock ram limit (max 4gb)

Hello, i have an dell vostro 320 which i am certain contains a bios with an artificial ram limit. 
The ram limit is 4gb, the system boots when i install 8gb in two 4gb sticks, but only recornises them as two 2gb modules.
The chipset is G41 which in theory should recorgnise 8gb ram just fine.

Currently i am running an Xeon E5450 cpu which suprisingly boots and works just fine with no bios mods.
I attach the original bios dumped using Universal BIOS Backup Toolkit 2.0.
I also attach the cpu-z screenshots.
Please remove the ram limit.

  DellInc.-1.4.0.rom (Size: 1 MB / Downloads: 0)

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