Toshiba A665 s5187x ci7 2630QM Laptop with no graphic card? Please advice!?

I have an opportunity to purchase a Toshiba A665 s5187x ci7 2630QM laptop at an incredibly low price of $679 at a local electronic superstore. I know this is one of the lowest price CORE i-7 with the new sandy bridge processor around. I just have one concern though, this laptop is equipped with an Intel HD shared memory built-in to the core processor, it doesn't have a dedicated memory graphic card. The question is, I will be doing minor to moderate digital camera pictures manipulations and video editing with aftermarket software. Would this laptop do the job or should I purchase a Ci-7 laptop with a graphic card which will cost about $200 more? Is the extra cost with the graphic card worth the extra $200 since I won't be playing any games? I was told the only difference between the two is speed when it comes to video editing and compressing? Can someone confirm this? If it's speed the only downside I can probably live with. I can't image the hyper-thread sandy bridge processor will run any slower than my 5 yr old AMD Turion 64 processor! Also, if I were to compare Toshiba vs Lenovo? Which is a better built unit?