yes they do
For a gaming computer you will need at least 4GB of RAM. Most people average 6GB for their gaming computers.
graphics card
You do not need a computer to be a engineer. However, a computer will be needed for certain types of engineers or would really help.
The controller you need while gaming will usually not be a factor in most gaming unless it is a driving game. Then you may need a wheel to play better. If you are using a gaming system such as the WII you will have a lot of different types of controllers.
A heat spreader is used to help draw heat from your ram. The average computer user does not need a heat spreader, but someone that has a powerful gaming computer may benefit from using it.
Yes, if you want to work in the states
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.
It is perfect for a regular work/student computer. But for a gaming computer you will need 500 more Gigabytes
If you bought a computer that is mainly for gaming, you should make sure it has a video and audio card. You need these two things for it to be functional for game playing.
Computer engineers need a 4 year college or univerity degree to get a job. There, you will receive on the job training.
Computer engineers need creativity as well and mathematical ability.. There is no doubt that science student can do better in computer engineering but in fact management group and one with low science-score (performance) cn also be computer engineering!!
You need to study computer science to do any work with game design. Most universities offer these computer science courses. Although most gaming companies just want to see that you have the knowledge and care less about degrees then most other businesses.