Identify the method of computer main board quality stand or fall

Computer ibm lenovo thinkpad x61s laptop cpu cooling fan main board quality stand or fall identification methods, help you in to buy computer to buy a piece of sincere best motherboard:

A observation onboard battery
The battery is to keep CMOS data and clock operation and established. Batteries can't keep CMOS data. When the choose and buy, want to be on the lookout for battery is rust, leakage. If rust leakage, may cause the whole motherboards due to corrosion and scrap.

Two observation chip production date
The speed of the main board not only depends on the speed of the ibm lenovo thinkpad x61s 7666 laptop cpu cooling fan, but also depends on the performance of the mainboard chipset. Generally speaking, the time difference of not more than three months, no group will affect the mainboard overall performance. An example of a chip date for 9852 (98 52 weeks), and the other a chip production date 9950 (50, 99 a week), production time difference of about a year, which can judge the motherboard of poor quality, unfavorable buy.
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The three observation expansion slot card
The idea is to watch carefully slot of the location of the spring leaf shape, then the ibm lenovo thinkpad x61s 7667 laptop cpu cooling fan interface card after insert into the channel, pull out, watch now slot in the spring leaf position with the original shape is the same, if there is a large deviation, then explaining the slot of the leaf spring elastic is not good, poor quality.

Fourth check its appearance, phase modulation its component.
To see the thickness of the main board, the two main board comparison, thick the advisable. And then observe the mainboard circuit layer number and wiring system is reasonable. The mainboard take up, every main board to the light source see, if can observe on the other side of the wiring element, then explaining the motherboard for ibm lenovo thinkpad x61s 7668 laptop cpu cooling fan double plate, or is the sandwich plate, needless to say should choose sandwich plate.




http://laptoppower.ucalgaryblogs.ca/2012/10/10/the-blank-space-key-of-usage/

http://goodbattery.blogv2.com/2012/10/11/the-blank-space-key-of-usage/