We purchased an HP Pavilion G6-1A30us on sale for $349, (Same basic specs as the G6 model you mention, except thankfully it's not bright purple), about a month ago and so far, it's working fine for my daughter.. The AMD processor and 3 GB of RAM seem to be fast enough for the basic needs of her school teaching duties.
As to the long term, we'll see how it goes. Her last HP laptop lasted about 4 years performing the same type of things and it served her well. (The display screen was failing and charging cord had failed and both were going to need replacement, so we sold it cheap to a refurbisher and bought something new.)
Just a note: If your daughter expects to use the preinstalled Office program (you mentioned her need for Excel), then you'll need to purchase a separate product key for the program.. The preinstalled version isn't truly functional until you use the key.. Or you can do like I did and uninstall the pre-installed version and install a licensed version you might have in possession. (That's another $300 or more, depending on which version you get.)
Hope this helps.
I'm new here. I bought a Hp Pavilions Sweet Purple on a lark... Yep a lark... My daughter going to college... wanted to get her something special she...loves purple and tried for a toshiba which has been great for me but alas tsunami and no word on purple computers. Did check out reviews but interested in making sure its good for college science major... Sounded like okay... wondering did I do right thing... still in box until I give it to her in June? She will check email, compute with Excel, want to chat (has webcam) carry laptop but I don't see graphics as being big deal. So is it okay? Bought my other son a mac for$950 going to college and his buddy spilled beer on keyboard... good -bye mac... not good college program at that time. I have a spill/drop for her any feedback helpful!