Upgrade to have a clear idea, the following provide several of the most common way for you to refer to.
Highlight the key type
This is a more common recommendation for upgrades. It is recommended that the subsystem be upgraded if the subsystem has poor performance or higher requirements for the subsystem. For example: Play 3D game too fast enough, simply go to buy a performance of the 3D accelerator card upgrade. The hard drive is not fast enough to buy an IDE RAID card, plus a hard drive to do the RAID0 array (usually a disk technology adapted to intensive data stream access on a professional workstation). This is like a stopgap for a doctor. This upgrade mentality is the most targeted and effective, but not necessarily the most affordable method, because there are system bottlenecks this important factor, these factors are likely to inhibit the upgrade subsystem performance improvement. This is a lot of examples, the author is not in this one by one for example.
Key joint and several types
This is just the highlight of the above emphasis type expansion. It is usually a supplement to the previous focused program. The idea is that when a subsystem is upgraded, other subsystems associated with it must be upgraded to match its performance. For example: After upgrading the video card (display subsystem), the CPU (operation subsystem) speed must keep up with to provide better geometry processing capabilities. There is also memory (storage subsystem) capacity must be large enough to cope with burst data flow requirements. Of course, with such a high-end graphics card to upgrade their own display (display subsystem), 17 inches is the most basic requirements, otherwise can not reflect the high-end graphics card in high resolution performance advantages. Just follow the idea of one upgrade, and you'll find that it's better to buy a new computer directly. However, the idea of joint and several upgrades has given us a very important concept in the process of upgrading: To maximize the balance of the subsystems, whether in terms of performance or price.
Supplemental Extended Type
is a need for a more extensive upgrade scheme, the upgraded configuration for the overall performance does not help, mainly to improve the normal use of comfort and functional expansion. such as: Upgrade the mouse, keyboard, power and chassis, etc., there are also suggestions to purchase such as hard disk drawer, active heat dissipation device, USBHub, handwritten plate and so on. This upgrade idea is more suitable for their own computer performance is sufficient, or have very special requirements of users, such as overclocking, otherwise, ordinary users or performance for the upgrade of the priority object, a price for a performance of the most real.
Additional functional type
This is an area for expanding computer applications by buying new accessories (typically peripherals). The most common example is the purchase of a printer to achieve the paper output function, purchase scan to achieve image input and so on. Now more than the accessories are equipped with printers, scanners, CD-RW drives, cameras and so on.