You have 3 options, build your own, a Velocity Micro, or a Digital Storm.
Good computer=$500 Good laptop=$1000 Good Gaming computer=$3000
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It is perfect for a regular work/student computer. But for a gaming computer you will need 500 more Gigabytes
the best computer in America is the mac book pro. IF you want a gaming computer go to alienware. It is awesome!
From what I have seen I would say that the best computer for online gaming would be the Dell Inspiron 1720. It doesn't freeze up or have what gamers call "lag."
There are many ok computer/laptops for gaming and then there are very good ones. If he does not like to move a round a lot you should buy him a computer which last longer than a laptop and has more gaming options.
Alienwares. They are the best gaming computers around. But they are a bit costly.
Alienware make the best Windows gaming computers.
Computer gaming systems need to have a high specification to run well. Gaming shops sell the latest consoles and accessories which will work with most modern televisions.
If you do a lot of gaming consider getting an nVidia GeForce 9600 video card.
Ultrabooks aren't really built for gaming. But the Asus Zenbook Prime is one of the best Ultrabooks out there. Low-voltage processors and integrated graphics cards are basically the opposite of what you want in a good gaming computer.