7050 dun support DX10. Its a Dx 9.0c IGP.
Some rare games like Dirt needs Sm 3.0 to just launch tha game . It refuses to run on X1250. Nyways 7050 cant utilize the features on Sm 3.0 coz its too weak to utilize its potential as other IGPs.
Why dont u get 780G mobo? Teh Gigabyte 780G mobo is for 4.5k and has X2150 IGP which supports DX 10.0.
Later if u add n ATI's HD 3xxx or 4xxx card, u can get upto 30% performance boost with the acceleration from the IGP nd chipset, which is the main advantage of spider platform.
The IGP of 780G kicks even the dedicated cards like 8400GS, 7300GT, HD 2400 etc.
If u add a 2.4k HD 3450 card, it cud perform almost duoble it stock performance in accelarated mode and performs similar to cards like 8500GT nd sometimes even beats it.
And also Gigabyte 780G mobo supports DDR2 1066 memory, PCIE 2.0, AM2+ socket(fpr phenoms and backward compatible with current AM2 X2s).
Vurrently its the best IGP in world.