Gaming on the acer aspire 7551 3029?

Hey all, I just got an acer aspire 7551 3029, 2.1ghz Athlon™ II P340, which has ATI Mobility Radeon HD 4200 Series graphics.

the gpu is 500mhz or so, and 256mb of ram

I also have my core i5 Lenovo T410s, with similar graphics speed (507mhz I think) and 512mb of graphics ram. It’s the NVIDIA ® NVS 3100M

I tried playing banished on the Lenovo and it barely ran at lowest settings, I was thinking this other machine might be good, though I could also sell it, I have it listed for $300 on kijiji. The screen is massive compared to the Lenovo, this machine is almost too big.

The acer has up to 1919mb hypermemory though, while the Lenovo does not being a business machine, that makes me think that it would be better for gaming, though I am not sure. The core i5 has a lot more grunt to it, 2.93ghz and hyperthreading.

I probably will keep the Lenovo but if the acer would work for gaming, at least a decent bit I’d be tempted to keep it and not sell.