Each gaming mouse will have a DPI range (e.g. 200 – 8,000), and the user can select a point in between that feels comfortable. A very high DPI would be something like 16,000. Most office mice will have a DPI of well below 1,000, by comparison. The majority of gamers will find 800 to 3,000 comfortable, but you can train yourself to cope with higher sensitivities over time.
The large 5400 RPM mechanical hard drive is slow, but with 1TB of storage space you will be able to save tons of movies, music and files. It comes with two USB 3.1 ports and one USB 2.0 port, and it has a moderate battery life of around 6 hours. The keyboard is not backlit, but most have noted that it is comfortable to use at least. Unfortunately, the same can’t be said about the touchpad, with many stating a mouse is a must.
That said, notebooks aren't upgradable, apart from their primary system memory (RAM, not to be confused with the graphics memory) and in some cases, the storage. You're going to be stuck with the screen, the graphics chip, and the processor you buy now, so evaluate these parts wisely. If you can stretch your budget a bit to get the next-tier-higher component, it can pay dividends in terms of usable life.
"Love it!...Good Mouse...It's especially frustrating if you're using a laptop, like myself, which doesn't have very many usb ports to choose from....The up to 12,000 dpi sensor technology in the G series optical mice is impressive, and honestly I would recommend anyone who spends a decent amount of time in spreadsheets or especially diagramming using a mouse purchase a gaming mouse for those uses as well - the high quality sensors make those jobs much easier."