That slow hard drive is going to slow down the whole computer. You are also wasting money buying Windows 7 Ultimate. You're better off getting Pro or Home Premium. So drop that to home premium or pro and invest in a better HD or a hybrid alternative.
Thanks for your reply,i will go with Pro or Premium , but i have no idea whats the difference between all of them(perfomance,interface...)
In what way will 5400rpm HDD slow donw computer? loading time,data transfer time?will it effect perfomance?
and 1 more question: will i be able to install different windows 7 after purchase or will it be secured like preinstalled windows 8 which doesn't allow downgrading?