618 how will know to choose to power source? Horizontal stroke of 3 450W power source is judged in l

1 power source checks project, environment and standard to answer coping

[PConline is evaluated] the configuration that a lot of DIYer think the power source of rated power 450W can be tie-in is quite little, suitable scope is very little. This also is before AMD high-power CPU and the impression that show card to leave bring about. 450W power source can have satisfied the power supply requirement of major leader.

This second horizontal stroke is judged will set out from much angle, design of the sort of power supply interface that analyses power source and amount, in-house PCB and with makings, and efficiency of value of deflection of the nameplate parameter of power source, voltage, changeover, the temperature when power source high load, noise, give out different mark, have a rank. Standards of grading is as follows:

Standards of grading

In test of voltage deflection value, my general has a test below 220V and 115V. Two groups of tests have below every voltage, it is respectively + 12V increases full electric current alone, + 3.3V and + 5V sky carries (+ 12V is fully loaded with) ; And + 3.3V and + 5V increases 10A electric current each, + 12V adds electric current to general power to be close to power source rated power (convention is fully loaded with) . Two environments dirty two groups of experiments in all 4 data. Additionally the changeover efficiency of power source is the test has below 220V. Temperature, noise all uses professional instrument to have a test. With the main engine that tests at high load configuration is as follows:

Test environment

The power supply that this second horizontal stroke reviews is: Hai Yun G-450, he Antai of GW-5500 of Great Wall megalosaurus overcomes VP450P, the brand of the power source of these 3 rated 450W comparatives in the market common, included domestic and international discretion to carry power source product.

(add " 80PLUS " attestation standard)

80PLUS standard

G-450 of 2 seas charm brief judge a coping

Hai Yun G-450 is power source of group of a half model, obtain " 80PLUS " gold attestation, 5 years are protected character.

Regard group of a half model as power source, nature of its former unripe wire is advocate board 20+4pin power supply and CPU4+4pin power supply. Additionally 2 6+2pin show calorie of power supply interface, 6 Sata interface, interface of 5 big 4D and interface of a FDD 4pin, these power supply lines all are modular group line, sort is quite all ready.

Will see the nameplate of Hai Yun G-450 again, 100-240V of input voltage limits is quite wide. + 12V can provide power of the biggest 444W, from here we also can see it uses DC-DC structure. + 3.3V and + 5V is the biggest electric current is 20A, and these two output when we are used daily do not exceed 10A basically, surplus is enough.

The machine that bake checks

In test of the high load machine that bake, the input carries power to be. We can see Hai Yun G-450 medicinal powder noise of sirocco leaf part beats in 44.7-45.8 decibel, be quite quiet.

High load runs next in-house and highest temperature to be 35.1 ℃ , wind gap gives in power source with the hand and did not feel special heat.

In-house PCB design and with makings

The PCB of Hai Yun G-450 designs it may be said to become an organic whole oneself, the major power source that before following me, evaluates 3 type construction is different, look a bit random. Because this kinds of many carbon fin and component put a design,nevertheless the likelihood is, the working temperature that is it is so low. Additionally we still can see LLC+DC-DC structure.

Advocate capacitance uses NIPPON electric capacity, compression 420V is able to bear or endure lukewarm 105 ℃ , capacity 270 μ F. Besides the origin that hanging day to fasten capacitance, the quadrature in the compasses in other parameter.

The component of Hai Yun G-450 is put unlike most power source, because its carbon fin is designed also instead many small carbon fin places in a certain position around component. Look suddenly under PCB is really confused, nevertheless temperature and noise are controlled quite well.

Voltage deflection value reachs changeover effect

Above paragraphs in order to mention, voltage deflection value checks mutual quadruplet data, fall to be opposite alone for ① 220V respectively + 12V increases full electric current; Be opposite below ② 220V + 3.3V and + 5V increases 10A electric current, + 12V adds electric current to general power to be close to power source rated power; Be opposite alone below ③ 115V + 12V increases full electric current; Be opposite below ④ 115V + 3.3V and + 5V increases 10A electric current, + 12V adds electric current to general power to be close to power source rated power. Here my general takes power supply the greatest voltage deflection value below different load has a record, the unit is % , standard line is ± 5% .

Deflection of voltage of Hai Yun G-450 is worth data

The value of deflection of the biggest voltage that can see Hai Yun G-450 appears in quadruplet data, + the voltage deflection value of 3.3V is achieved - 1.52% , it is thus clear that quantity of its voltage deflection is controlled quite outstandingly.

Hai Yun G-450 changes efficiency (220V)

In changing efficiency to check, hai Yun G-450 also exceeds gold standard line, and we know it is power source of group of a half model, the model can have transmission loss to bring about changeover efficiency to drop between group line and power source, this data still can encircle what can nod.

Brief summary

Regard the quality on the world as one of best power source brands, hai Yun G-450 really defect of it doesn't matter can be carried come out, exclusive macula is PCB circuit the design is a bit messy, inductance coil opens processing, advocate capacitance capacity slightly small. Next we see Hai Yun G-450 can get how many minutes.

Hai Yun G-450 notchs

The test total cent of Hai Yun G-450 is 84.49 minutes.

GW-5500 of 3 Great Walls brief judge a coping

As identical as Hai Yun G-450, GW-5500 of Great Wall megalosaurus also is power source of gold of group of a half model, protect character period G-450 of little inferior Yu Haiyun, also have 3 years nevertheless.

The double 6+2pin that eliminate gives birth to wire and mark to match formerly shows line of calorie of group of power supply model, GW-5500 of Great Wall megalosaurus still has interface of 3 big 4D and 5 Sata interface, satisfy the requirement of lead plane of much hard disk.

The nameplate of GW-5500 of Great Wall megalosaurus and other power source differ somewhat, see us carefully nevertheless also can understand. Its + 3.3V and + 5V is the biggest electric current is 21A and 18A respectively. + 12V still divides two-way output may take each 18A not to use power bigger show clip.

The machine that bake checks

GW-5500 of Great Wall megalosaurus also is quite quiet below high load, fan noise compares Hai Yun only tall 1 decibel left and right sides.

The working temperature below high load does not consider GW-5500 of Great Wall megalosaurus tall, also can see nevertheless calorific dot is more.

In-house PCB design and with makings

GW-5500 of Great Wall megalosaurus the original on PCB board is less, even we can see give for nothing advocate capacitance position, estimate what this power source follows taller wattage to be interlinked with series products plan. Transformation part one big 2 small 3 transformer show it uses LLC transformation means, left and erect circuit board the feature that is DC-DC structure.

The way of capacitance is very weird, the angle from an artful can see it is the capacitance that comes from NIPPON, compression 400V is able to bear or endure lukewarm 105 ℃ , the capacity is 390 μ F, with expecting is quite luxurious.

Press plastic fender we can see rectification bridge, switch canal is locked up go up in carbon fin, pardonable in front measure temperature is so lowly.

Voltage deflection value reachs changeover efficiency

Deflection of voltage of GW-5500 of Great Wall megalosaurus is worth data

The value of deflection of the biggest voltage of GW-5500 of Great Wall megalosaurus appears in the 3rd group of data, + the voltage deflection value of 12V is achieved - 2.17% , this voltage deflection measures the quadrature in the compasses in be being controlled.

GW-5500 of Great Wall megalosaurus changes efficiency (220V)

In changing efficiency to check, performance of GW-5500 of Great Wall megalosaurus is quite excellent, the tower above of 90% changeover efficiency that compares gold standard line when 50% load 1.36% , more of standard of efficiency criterion tower above is changed in what other load falls.

Brief summary

relatively Yu Haiyun G-450, multinomial expression of Great Wall GW-5500 has a bit inferior. Do not cross it with makings is more luxurious, PCB design also is compared carefully and nearly, the norms of capacitance is to exceed a lot of 500W power supply more. The most praiseworthy is the changeover efficiency of GW-5500 of Great Wall megalosaurus, next we also are calculated its mark.

Great Wall GW-5500 notchs

The test total cent of Great Wall GW-5500 is 85.72 minutes.

VP450P of the 4 grams that install titanium brief judge a coping

relatively at before two power source, VP450P of the gram that install titanium is relatively inferior, it is representing the introductory class power supply that provides sexual price to compare more. Protect deadline to be two years character, and mark has change only do not repair, do not have nevertheless " 80PLUS " attestation.

Be not modular group power source as, installing titanium to overcome VP450P place to have wire is from power source derivative, eliminate mark matchs advocate board, line of CPU power supply, additionally still two groups of 6+2pin show calorie of power supply interface, 5 Sata interface, interface of 3 big 4D and interface of a FDD 4pin.

Of VP450P of the gram that install titanium + 3.3V and + 5V is the biggest electric current amounts to 20A, as Hai Yun, surplus is enough. At the same time we can see it + 12V cent is outputted for two-way of V1, V2, + 12V is the biggest general power is 420W. This is to prevent only way electric current to cause the undesirable reaction such as overheat greatly too, the sort showing clip that nevertheless this also makes can match decreases.

The machine that bake checks

On signal to noise ratio two power source had the fan a confusion of voices of VP450P of the gram that install titanium to rise apparently, achieve 60 decibel above.

In-house PCB board highest temperature obtains the part that go up 45.5 degrees, this temperature is a bit high. This also is changeover efficiency is low those who cause, more electric energy wastes nature to be able to be changed into heat energy.

In-house PCB design and with makings

Design of in-house PCB of VP450P of the gram that install titanium still calculates justice, 3 carbon fin bear all element on average medicinal powder hot. Intermediate transformation part one big a pair of small transformer can reach it uses double-barreled to stimulating transformation means. The two size coil of the little coil near transformer and across shows it uses means of stabilized voltage of enlarge of only way magnetism.

The capacitance of VP450P of the gram that install titanium uses TEAPO electric capacity, with expect perfectly. Nevertheless advocate of capacitance with expect have bit of shrink, compression 420V, be able to bear or endure lukewarm 85 ℃ are OK still, the capacity has numerical value of 220 μ F to be less than the half of rated power only.

Look from this angle, canal and rectification canal lock up the switch of power source to go up in carbon fin, nevertheless rectification bridge is in with respect to odd independence the one horn of PCB, may stylist does not worry about its calorific quantity.

Deflection of voltage of VP450P of the gram that install titanium is worth data

As a result of the gram that install titanium VP450P inputs limits lesser, here I did the test below 220V only. Convention imposes the test below appropriate electric current in each output, the performance of VP450P of the gram that install titanium is good still, value of highest voltage deflection appears in + 2% what 5V power supply outputs. Give alone nevertheless + the discovery when 12V output increases full electric current + 12V and + the deflection worth that 5V exports is achieved respectively - 10.42% with 12.4% , exceed bid badly.

VP450P of the gram that install titanium changes efficiency (220V)

In installing titanium to overcome the product introduction of VP450P additionally, did not appear any " 80PLUS " attestation, see level of bronze medal of short of of this power source from data, the 80% lines tower above that compares white card level nevertheless is not little, we maintain the power supply that it is attestation of a white card for the moment.

Brief summary

As a whole, VP450P of the gram that install titanium is used stuff is quite good. The defect on PCB design is rectification bridge did not configure carbon fin, the temperature when working will be higher. Because the stabilized voltage of enlarge of only way magnetism is designed, in + the circumstance of low load of fast laden and other spur track issues 12V, voltage deflection amount is quite large, affect the life of each hardware badly. Though the voltage deflection below groovy condition is controlled well, but when we are used daily + 3.3V and + 5V can not achieve 10A so tall electric current, and + 12V often can be in high load however, this power source still stays 3 fall into surplus use safer.

I am in Beijing east on on the product introduction that sees VP450P of the gram that install titanium, PCB advocate capacitance capacity is 270 μ F, that is to say its use makings shrink.

The changeover efficiency that it also mentions on product introduction additionally is highest can amount to 85% , nevertheless my actual measurement comes out to change efficiency to have 83.74% only when 50% load, likely this test data of 85% is to be in what taller input measures below voltage, I and the power source that becoming it is attestation of a white card.

VP450P of the gram that install titanium notchs

The test total cent of VP450P of the gram that install titanium is 56.46 minutes.

5 data induce and analysis, summary answers coping

Although install titanium to overcome the product introduction of VP450P and actual measurement data to not agree with, we still are with real test and grading accurate. Get the cent with the total nonexistent pass mark, good, outstanding cent that come out of course, we are pure regard basis of a rank as the mark. Someone can say, this mark is worth reference not completely, exceed good mark with the power source do manual work with more expensive power after all taller, the start of different power different. Accordingly my rejoin: Notch × notchs ÷ (power × price) × 1000= the final score of this power source.

Data analysis

Come so, we can go to the influence classify of power and price in final score. The test that can see Hai Yun G-450 notchs for 84.48, notch finally for 36.969; The test of Great Wall GW-5500 notchs for 85.72, notch finally for 41.976; And the test of VP450P of the gram that install titanium notchs for 56.46, notch finally for 29.64. We can give the first mark quite the quality of the product, the 2nd mark can give the sexual price of the product to compare quite.

That is to say, in these 3 power source, no matter Great Wall GW-5500 is average quality and sex valence comparing is highest, it is Hai Yun G-450 next. And the VP450P of the gram that install titanium that the product publicizes phonily is put in certain quality problem really, although its price is very low,sexual price is compared or be not worth. How to choose power source to believe everybody have a well-thought-out plan.