i don't know exactly .but the original forcedeth didn't worked for me.i found this forcedeth_nock and nockd in insanelymac.The diff is nock floods the systemlogs.where as nockd limits it..

and my board (GA-K851GMF-9 ) is capable of Gigabit.it is also mentioned it manufacturer site GigaByte

---

MAC OS x : Yet to figure out version.
CPU:AMD E-350D APU MOBO:GA-E350N RAM: 4GB 1333Mhz GPU: AMD Radeon HD 6310
HDD:Seagate 160GB SATA DVD-RW: Transcend USB Burner USB Mouse & Keyboard
WebCam: Logitech C910

Chipset:
AMD Radeon HD 6310
North Bridge: AMD A45 FCH