Get the one has the ddr5 gtx860m, because ddr5 is better than the ddr3, also gtx860m is better than the gtx850m, and amount of RAM does not matter. http://alienbabeltech.com/main/gtx-770-4gb-vs-2gb-tested/3/
Get the one has the ddr5 gtx860m, because ddr5 is better than the ddr3, also gtx860m is better than the gtx850m, and amount of RAM does not matter. http://alienbabeltech.com/main/gtx-770-4gb-vs-2gb-tested/3/
I second this^
860m will be better, but the difference is not too much that you'll notice. You should consider other things like the screen and the looks of the computer and the ports it has. I know the lenovo one has a fantastic IPS screen, and I can't find the HP one on their website to look at the specs of it...but honestly lenovo laptops are better than hp ones most of the time.