I'm running on these specs with no issues, but at low graphics. I'm not looking for high graphics.
AMD Turion 2 dual core M600 2.4Ghz
4 GB RAM
ATI Mobility Radeon HD 4650 w/1GB shared memory.
What you posted from Dell should work at low graphics, but, with a laptop, you don't know until you try.
Don't forget, "Your mileage may vary."