Marketing
To choose a laptop
RAM
In second place characteristics to look in a portable configuration, the processor and RAM are tied. Start with the RAM.
The RAM is what is called the "memory" of the computer, that is to say its working memory. It is in the RAM are stored all the data being processed for access to data in RAM is extremely fast.
Some applications use a lot of RAM. When available memory becomes scarce, the operating system (Windows, Linux ...) fetches the memory elsewhere: for example hard disk (file or partition to "swap"), or a USB stick (technology "ReadyBoost" Windows Vista).
In short, when lack of RAM, the Dell Inspiron E1405 battery will search the memory of much slower media (hard drives, USB key), causing a sharp drop in performance (because of the numerous exchanges between RAM and disk drive / USB key).
Therefore he will have more RAM, a Dell GW240 will have more working memory, the less it will need to use the "swap", it will be more efficient.
*There are some limitations in terms of RAM
These limitations may be related to hardware or operating system related.
Computers have a maximum capacity of RAM supported material, which is sometimes relatively low (eg 2 GB max.) And it is impossible to expand the memory beyond that capacity.
In summary ...
Choose the most RAM possible (this is not what is the most expensive).
Check that the RAM meets the hardware limitations (related to the motherboard of the laptop) and software (Operating System related).
CPU
Most people just look at the processor frequency. It's a bit simplistic.
Architecture
Some processor architectures are specifically designed for laptops (low power consumption, low heat) while others are intended primarily for desktop computers. Of course, by their very nature, the mobile processors are more expensive to produce.
Still, some manufacturers do not hesitate to put processors in a Dell inspiron b130 battery fixed in order to reduce costs. This results in an increase in power consumption, more heat and increased noise from fans (who may also be of poor quality to reduce costs).
We must therefore pay attention to the architecture of the processor and whether they are suitable for laptops. Intel, Centrino is the line which refers to mobile processors. These are high quality with good performance and a low heat.
How many cores?
In the race for power, processor manufacturers have faced a problem: They no longer able to significantly increase the frequency of the processors. By cons, they managed to incorporate several "cores" (processing unit) on the same processor, hence the appearance of processors "multi-core" ("dual-core", "quad-core").
Specifically, having two cores on one processor does not mean that the Dell hd438 will go two times faster than a processor with one heart. This means that the processor with multiple cores can perform more tasks in parallel.
To date, there are very few applications that are optimized to take advantage of parallelization (it is also not always possible to parallelize tasks). With multi-core processor, the computer will go therefore not necessarily faster, however it will be much more responsive (several applications can run simultaneously on different cores), which improves the comfort of Use a non-negligible.
In summary ...
Points to look mainly architecture:
array processor
number of cores
frequency
power consumption
core
Other technical information
There are a lot of this information, for example, Wikipedia (eg with the Intel Core 2), for any type of processor.
Post je objavljen 25.06.2011. u 09:00 sati.