Iii. How do you read the power label
The inscription is full of parameters, so which ones do you need to learn and notice
Power
We know that the power labels now indicate two kinds of power: rated power, maximum power (peak power)。
The rated power is completely different from the maximum power
Quantification power is typically the effective power capable of continuous output, i. E. The stable power of the power to be produced in the normal working environment. The rated power is the most important parameter specification of the power, and if the rated power of the power does not meet your computer's needs, the unpredictable problems will follow。
Maximum power (peak power) is the maximum power that can be exported when the power stabilizes, generally the maximum output power of the power is higher than the rated power, and the maximum output power of the general power is 1. 3 to 1. 6 times its rated power。
The former power labels often obscure the most important rated power and exaggerate maximum power to confuse consumers. But as the power market has won and won, no manufacturer has dared to do so, after all, the word “qualify power” has gone into the public mind. So all the power signs that we see now are rated power in obvious words。
We can also see the largest output current line, which can be ignored by ordinary players
As for maximum power, in order to reduce the simultaneous occurrence of two power values, it leads to the perception of stupidity. The concept is now diluted by manufacturers, which mainly give maximum power values for each output item, allowing consumers to reconcile themselves to derive maximum power values。
So now the power of a generally good power source points to a pattern: emphasis on rated power, dilution of maximum power, and clarity of purpose. If the current power grid is not displayed in a visible position, it means that the power plant is a little “deep”。
2. Various accreditations
The identification of authentication information is an important step in the selection of power sources. The quality of a power supply can be assessed first to see whether it has passed the necessary security certification. In general, the more power the project is certified, the more reliable it is. While many certifications are not mandatory, one certification is necessary, namely, the power being sold in the current market, which must be certified by a state mandatory 3c。
Various authentications on the inscription
Although we often ignore the fact that 3c certifications are available, you can also buy peace by looking at it more often, whether it has a “ccc” logo or not, and by wasting too much time。
80 plus authentication
80 plus certification is a sign of high power conversion efficiency. The certification requirement is to achieve more than 80 per cent power efficiency in the power supply at load points of 20 per cent, 50 per cent and 100 per cent by integrating the internal power supply of the system. For 80 plus certifications, i'm sure you're all familiar. Advances in the process and the bottom of the river for the cost of materials have now led to 80 plus certifications。
So, 80 plus certification doesn't matter, depending on the level of 80 plus certification. Currently, mainstream power sources such as makin 500w and gp600g in shibuya are certified as gold medals, and some of the higher-end power sources are certified as high-grade platinum and even titanium, providing confidence in the efficiency of conversion, with high prices, of course. For ordinary players, gold-card certified power is the current mainstream option。
Other accreditation
In addition to the above certification, some high-quality power sources are certified through the fcc, which is a certification of electromagnetic interference. A fcc-certified power supply will shield the electromagnetic interference it produces during its work and eliminate harm to the human body. In addition, ul authentication signs, one of the most stringent at present globally, are visible on some advanced power sources, with restrictions on power supply in terms of structure, materials, test instruments and methods。
3. Road output tables
How do you get the rated power? That's the way out. As the hardware power gap between circuits is widening, for example, independent graphic cards are the largest point of export for current power output, the power parameters responsible for this route output naturally require more attention. Otherwise, total power alone, neglecting the output by road, could easily lead to hardware instability if a particular export did not satisfy the corresponding hardware appetite。
All circuits, voltage output is a sign
As can be seen from the glossaries of contemporary power sources, there are currently five main power source circuits, including +3. 3 v, +5 v, +12 v, +5 vsb. +3. 3v for main plate and specific area power, +5v for ssd power, +5vsb for usb power still available for shutdown, and +12v for main plate chain circuit output. In general, the well-qualified power supply from the plant meets the specifications of the atx on these four-way output, and we do not need to pay more attention。
As for the +12v that is not mentioned, it is the key to look at the circuits。
There's a big gap in the power needs of different hardware, which leads us to see a path output
+12v is the most important power output voltage in the current power system. The source of electricity for cpus and graphic cards is from +12v, while the motor component of hardware with mechanical structures, such as mechanical hard drives and optics, also depends on +12v to meet the demand per minute。
Monsignor for single + 12v output
+12v is also divided into single +12v and two +12v. What's the difference? In simple terms, single-way +12v is independent of all hardware on the platform, with output currents up and down, maximizing current utilization, so single-circuit power conversion is efficient and suitable for machine players。
Double +12v output sign
A two-way +12v means a two-way output responsible for the supply of cpus and graphic cards, respectively, marked with “+12v1” and “+12v2”. A two-way +12v output power is typically designed to provide limited current resistance, and when the output stream is too large, it generally triggers current-restrictive resistance protection to protect power and other hardware. Due to the fact that one-way bulk cpu and graphic cards are supplied without consideration of the “cross-border” issue of multiple-road exports, they are generally not equipped with a barrier function。
But you don't understand the principle of good and bad, so just remember that the two-way 12v is used mainly for mainstream low-end power, and the one-way 12v is used more for high-grade power。
Iv. PpoNline summary
Will you see it
In fact, it's the power label that makes it easier for us to understand the power. We cannot dismantle the power supply, we do not have specialized instruments to measure its conversion efficiency, but we have brands to understand the performance parameters of the power and the level of authentication, so that we can understand the high and low power levels。
So, looking at the power by branding is one of the skills we choose to buy. It also reflects a principle that we have chosen to purchase power sources, avoiding imprescriptive power sources with inadequate parameters. It is hoped that you will be able to benefit from today's articles in the future electricity shopping。
