When purchasing a graphics card, in addition to paying attention to its manufacturer and model, you should also listen to whether the fan has noise inserted memory module, otherwise it will be burned, when inserted, the motherboard will continue. The tweet, the inserted memory will be hot, and the power supply should be turned directly instead of going to the memory. Conflicts may occur when used in different models and memory production of different manufacturers. When booting, the motherboard will make a beep, sometimes this may happen because the DIMM slot is dirty. Some motherboards that are primarily supported by the Celeron series also support PIII, but they need to transfer cards to work, and are not stable. When installing the CPU fan, you need to pay attention to the direction of the heat sink. If the fixed steel strip is too hard, you can use a pitched screwdriver against its protruding unit to be brought into. When purchasing a chassis, it should be paid to the thickness of the cabinet, the steel plate is relatively small, and the power supply is small, which cannot be loaded into the general chassis. However, when the quality is better, when the machine is debugged, you can directly use the metal item to short the motherboard power supply. The two poles of the switch to start the machine's purchase of second-hand memory is the most important thing to buy second-hand memory is to identify the brand and whether it is polished. When purchasing, in addition to the eyes of the meat, it can also bring a magnifying glass, mainly observing whether the surface of the memory chip is polished. The surface of the stemed chip has a trace of a horizontal or vertical direction. When purchasing, pay attention to identify true and false PC100 memory and distinguish PC100 and PC133 memory. The PC100 Standard Memory has a SPD chip. That is, there is a small EEPROM on the edge of the memory bar, which records information such as the category, capacity, operating frequency, operating voltage of the memory bar. This chip is the main difference between standard PC100 memory and non-standard PC100 memory. With the memory of the SPD chip, in the computer startup process, the information of the memory module is read into the computer so that the computer is optimized in the run. When purchasing, pay attention to whether the solder on the chip pin on the memory is uniform. The memory strips are 72 lines and 168 lines. When purchasing, you should purchase according to the memory slot on your motherboard. In addition, when purchasing second-hand memory, if the economic conditions allow, you can consider the memory of the ECC. One side of ordinary memory typically has 8 chips, and a 9-piece chip with ECC's memory. Many of the small chips are available for parity. It makes the system more stable, and the data transfer is higher. The relationship between the CPU and the motherboard jumper When the CPU frequency displayed when the power is turned on, it may be a jumper error, which is required to be corrected according to the motherboard. The CPU's operating frequency (frequency) includes two parts: outer frequency and frequency, the product is the main frequency. The external frequency refers to the system bus frequency. At present, most of the mainstream CPUs are mostly 100MHz and 133MHz, while AMD's K7 has used up to 200MHz external frequency. The full name of the multiplier is the multiplier coefficient. There is a ratio relationship between the frequency and the outer frequency of the CPU. This ratio is the multiplier coefficient, referred to as multiplier. Double frequency can be from 1.5 to 12.5 or even higher, with 0.5 a spacing unit. Froquency and multiplier multiplication is the frequency. When you get a CPU, you can understand its related information through some symbols above the CPU, such as IntelPiiii1000, its surface writes (Pentiumiii Malay 1000/256/133 / 1.7V etc ..) From here you can get this The basic situation of the CPU, its clock is 1000, the secondary cache is 256kb, 133, and the operating voltage is 1.7V.
