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EVGA SuperNOVA 650 G3/750 G3 Power Supply Evaluation

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The SuperNOVA 1000 G3 evaluation was released in your station before. According to feedback from netizens, I am still very interested in the low wattage version of this series. Due to pricing and power, the low wattage version has a wider audience. In this evaluation, two mid-range wattage models, SuperNOVA 650 G3 and SuperNOVA 750 G3, were selected for testing.



Introduction to articles
1. Preamble
2. Unpacking
3. Dismantling
4. Testing
4-1. Voltage Stability
4-2. Conversion Efficiency, Light Load, Fan Speed and 5Vsb Standby
4-3. Cross Load
4-4. Ripple and Noise
4-5. Power-down Hold Time
5. Summary


SuperNOVA G3 is the third generation of ” SuperNOVA G” series power supply introduced by EVGA. It is a performance-enhancing and miniaturized version of the second generation of ” EVGA SuperNOVA G2″ and was listed in China in November 2017. At present, there are altogether five models with different wattage in the Supernova 550G3/650G3/750G3/850G3/1000G3. The length of the shell is uniformly shortened to 150mm from 165/180/200mm of the previous SuperNOVA G2, and the performance is further strengthened.


The difference between SuperNOVA 650 G3 and SuperNOVA 750 G3 is not very big, mainly due to differences in output power, number of interfaces, warranty time and price. Obviously, literally, the rated output power of the SuperNOVA 750 G3 is 100W larger than that of the SuperNOVA 650 G3.


In terms of interfaces, SuperNOVA 650 G3 has 1 CPU 4+4Pin, 3 6+2Pin PCIE interfaces, 6 SATA interfaces, SuperNOVA 750 G3 has 2 CPU 4+4Pin, 6 6+2Pin PCIE interfaces, and 9 SATA interfaces. Users need to pay special attention, the number of interfaces is the main difference between the two power supplies. SuperNOVA 750 G3 with more interfaces can support high-end motherboards powered by dual 8Pin/8+4Pin CPU, more graphics cards and more hard disks.
 
In terms of quality assurance and price, SuperNOVA 650 G3 will be renewed for 7 years. At present, JD.com sells for 759 yuan, SuperNOVA 750 G3 for 10 years and JD.com sells for 939 yuan.


Technical features and selling points:
-80Plus gold medal
-All-day capacitor
-ECO temperature control system
-130mm hdb fan
-150mm length fuselage
-intel haswell support
-ultra low output ripple and noise
-APFC+LLC resonance+DC-DC design
-Rated 650W/750W@50Output capacity at ℃
-Output voltage load adjustment rate is less than 1%
-Single+12V
-support nvidiasli/amd crossfire
-Fully modular interface compatible with SuperNOVA G2 module line
-comply with eu ErP Lot6 2013 energy code
-Comply with Intel ATX12V v2.32 & ESP12V v2.92 standard
-Over current, over voltage, low voltage, over power, short circuit, over temperature protection
-7-year renewal (650 G3)/10-year renewal (750 G3)


EVGA SuperNOVA 650 G3 power supply specification


 
EVGA SuperNOVA 750 G3 power supply specification


2.Out of the box
 
In the unpacking part, EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 are still the usual grey color boxes of EVGA. The color box of SuperNOVA 750 G3 is more similar to the color box of SuperNOVA 1000 G3, which uses blue font and has the same plastic handle as the color box of SuperNOVA 1000 G3 due to the increased number and weight of module lines in the box. We have already introduced the specific details in the SuperNOVA 1000 G3 evaluation, and here we will briefly describe the different parts.
 


The back of EVGA SuperNOVA 650 G3 package is the product feature introduction.
 


The side is the introduction of temperature control and power supply specifications.
 


The EVGA SuperNOVA G3 series is almost identical in inner packaging, with a firm pearl cotton support structure and a module line on one side.
 


EVGA SuperNOVA 650 G3 power supply and all wires and accessories are shown in the following figure. Including instructions, hook and loop cable ties, power detection tools, wire storage bags, mounting screws, silica gel desiccant.
 


EVGA SuperNOVA 650 G3 module line, it is said that the number of module interfaces of SuperNOVA 650 G3 is different from SuperNOVA 750 G3. The number of module interfaces of the power supply is determined by the output power of the power supply itself. Each interface has a power limit it can carry. The larger the output power of the power supply, the more interfaces it can carry. Therefore, the user can use the module line configuration matched by the power supply factory. Generally, there will be no problem. Remind me that if you are making module wires yourself, you need to know the upper limit of power load of the computing power supply itself, interfaces and cables, and then match them. Otherwise, if you exceed the power limit, you may burn down the equipment, interfaces or power supply itself.
 



EVGA SuperNOVA 650 G3 power supply body, SuperNOVA G3 series are 150mm shell length. Using frosted shell, feel and look are good.
 

The number of interfaces of the module wiring board of the EVGA SuperNOVA 650 G3 power supply is also matched with the power. Compared with models with high wattage, the number of interfaces of the module wiring board is few, which is generally sufficient.
 

Output capacity: 649.2W for 12V, 110W for 5V+3.3V combined output capacity, OK, larger than the common two-way 20A combined 100W configuration.
 

Evga supernova 750g3 section

EVGA SuperNOVA 750 G3 power supply and all accessories. Instructions, hook and loop cable ties, power detection tools, wire storage bags, mounting screws, silica gel desiccant are all many.



The EVGA SuperNOVA 750 G3 requires several more sets of module wires. Please refer to the specification table above for the specific number of interfaces.


As the output power increases and more interfaces can be brought, there are more module interfaces to match it.


Output power: 12V is designed as a single circuit, with output capacity of 748.8W 5V and 3.3V each have output capacity of 24A. Combined output power of 120W is relatively large.



3.Dismantling
 
Summary
Manufacturer: Zhenhua
Scheme: Leadex II
Fans: EVGA, H1282412L, 128mm, 12V, 0.18A, HDB fluid dynamic bearing
Transient filtering: 4x Y capacitor, 3x X capacitor, 2x common mode choke, 1MOV
Rectifier bridge: 1x? (includes heat sink)
Surge current protection: fuse, NTC thermistor, relay


Main capacitance:
Supernova 650g3: nipponchemi-conkmr series (400V/390uF/@105℃)
Supernova 750g3: nipponchemi-conkmw series (400V/470uF/@105℃)


APFC:
SuperNOVA 650 G3:
2x Infineon IPA50R199CP (550V / 11A @100℃ / 0.199Ω)
1x Cree C3D04060 (600V / 7.5A @125℃)
SuperNOVA 750 G3:
2x Infineon IPA50R199CP (550V / 11A @100℃ / 0.199Ω)
1x Cree C3D08065I (650V / 8A @125℃)


Main switch tube:
SuperNOVA 650 G3:
2x Infineon IPA50R199CP (550V / 11A @100℃ / 0.199Ω)
SuperNOVA 750 G3:
2x Infineon IPA50R140CP (550V / 15A @100℃ / 0.14Ω)


+12V Rectification: 4X Infineon IPP 041N 04N g (40V/80A @ 100 ℃/4.1MΩ)
5V/3.3V:8x Infineon IPD060N03L G (30V / 50A / @100℃ / 6mΩ)
PWM master: 2xon semiconductor ncp1587a
Filter capacitor: Nippon Chemi-Con KY/W/KZE/KRG series electrolytic capacitor, Nippon Chemi-Con solid-state capacitor
PFC master: infilon 3pcs2+s9602
Main control: SF29605+S9602
Regulatory ics: sf29605 (possible), LM324ADG, LM339A
5Vsb PWM master: 29604
5Vsb rectifier: Mospec S10C60C


EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 are both Leadex II schemes based on Zhenhua. As early as in the evaluation of EVGA SuperNOVA 1000 G3, I have already dismantled this scheme in detail. Leadex II is an improvement from Leadex generation. It uses SF29605+Infineon 3PCS02 master control, and is an improved compact layout design for APFC+LLC half bridge resonance +12V synchronous rectification +5V/3.3V DC-DC generation, supplemented by a smaller size 128mm HDB heat dissipation fan.


Compared with EVGA SuperNOVA 1000 G3, the heat dissipation fans of EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 are replaced with H1282412L low-speed models, with specifications of 128mm, 12V/0.38A, HDB fluid dynamic bearings, and labels with perfect safety regulations and steel marks. One side of the fan is fixed with a plastic baffle with a pressure relief hole to prevent airflow short circuit. Compared with the H1282412H high-speed model used by SuperNOVA 1000 G3, the fan speeds of EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 have decreased, and as the noise has also decreased, we will analyze it again in the test section.



The connection line of the temperature control switch of the fan and the power line of the fan are all covered with heat shrinkable sleeves for reinforcement and insulation treatment. The wiring of the temperature control switch is fixed above the insulation baffle. The temperature control switch also adopts pin type connectors and is insulated by rubber caps. The selection of materials and details are consistent with SuperNOVA 1000 G3.



SuperNOVA 650 G3 overall layout:



The overall layout of SuperNOVA 750 G3 is basically the same except for the differences at the module wiring board.



First-class EMI circuit. Surge protection device uses the combination of safety tube+NTC thermistor+relay+MOV varistor. The EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 power supplies are treated in this part exactly the same.



APFC section:
SuperNOVA 650 G3 uses 2x Infineon IPA50R199CP (550 V/11a @ 100 ℃/0.199Ω)
+creec3d04060 (600 v/7.5a @ 125 ℃).


SuperNOVA 750 G3 is configured with a higher specification silicon carbide Schottky diode, which is a combination of 2x Infineon IPA 50R199CP (550 V/11A @ 100 ℃/0.199Ω)+CREE C3D08065I (650 V/8A @ 125 ℃).


Main capacitor, SuperNOVA 650 G3 is made of daily chemical KMR series, 400V/390uF/105℃.



SuperNOVA 750 G3 is a daily chemical KMW series, 400V/470uF/105℃. The two come from different series, but there is basically no difference. W model is a customized ” chimney” version, with smaller projection area and higher overall, which is convenient to make better use of space.



The main switch tube, SuperNOVA 650 G3, is 2xInfineon IPA50R199CP (550 V/11A @ 100 ℃/0.199Ω).



SuperNOVA 750 G3 is 2x Infineon IPA 50R140 CP (550 V/15A @ 100 ℃/0.14Ω). The cooling fins for the main switch tubes of the two power supplies are the same, and both increase the heat exchange area by opening fins.



The transformer is a model of integrated resonant inductor customized for EVGA.



The+12V rectification of EVGA SuperNOVA 650 G3 is 4X Infineon IPP 041N 04N g (40V/80A @ 100 ℃/4.1MΩ), with two upper and two lower bridges installed on the heat sink in pairs.



The same is true for SuperNOVA 750 G3. The +12V rectifier tubes of the two power supplies are configured in the same way.



The +12V rectifying and filtering output circuit is a combination of daily chemical electrolytic capacitor and solid capacitor. The actual measurement of this circuit is efficient and practical.



The EVGA SuperNOVA 650 G3 has two DC-DC output circuits, a total of 8X Infineon IPD 060 n03Lg (30V/50A/@ 100 ℃/6MΩ), and four of them are used.



The DC-DC circuit of EVGA SuperNOVA 750 G3 is also made of the same materials. similarly, there are 4 inflenon IPD 060n03lg in each circuit, totaling 8.



LM324ADG



5Vsb PWM master: 29604



PFC master: Infineon 3PCS02



LLC Resonant Master: SF29605



On the back of PCB, it has been several years from Leadex to now, and it has developed to Leadex II scheme. The process is also quite in place. The wiring layout, tin coating and tin filling are all handled well.



Module wiring board is also a filter combination of daily chemical electrolytic capacitor and solid capacitor.



From the perspective of disassembly, EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 are basically made of the same materials except that different specifications of power devices are used in the main capacitor, PFC diode and main switch tube to cope with different power outputs.


4.test


The instruments used in the test are Chroma 8000 series SMPS automatic power supply test system, Tektronix digital oscilloscope and photoelectric tachometer. Among them, Chroma 8000 includes 9 groups of 63640-80-80, 2 groups of 63630-80-60 and 1 group of 63610-80-20 programmable DC electronic loads with a test load capacity of 4300W ..
 


For overload test, EVGA SuperNOVA 650 G3 is overloaded to 700W, and EVGA SuperNOVA 750 G3 is overloaded to 850W. The main assessment is whether the power supply will trigger the protection and stabilize the output. The output voltage value is not included in the calculation of voltage deviation and load adjustment rate.


The current settings for the static load balancing of the power supply are as follows:



The test results of static load balancing of EVGA SuperNOVA 650 G3 power supply are summarized as follows:



The test results of static load balancing of EVGA SuperNOVA 750 G3 power supply are summarized as follows:



4-1.Voltage stability
The Intel ATX12V specification has clear requirements for the output range of each group of voltages. The output ranges of +12V, +5V, +3.3V and +5Vsb shall not exceed 5% and the requirements for -12V shall be 10% in the whole load range.


Voltage stability of EVGA SuperNOVA 650 G3 power supply balanced load:


Voltage stability of EVGA SuperNOVA 750 G3 power supply balanced load:


I don’t need words to describe the difference between the two power supplies. As a scientific and rigorous evaluator, I’d better put the data directly:
Load regulation rate refers to the fluctuation of power supply voltage from no load to full load. The smaller the load regulation rate, the more stable the power supply voltage is.


The load adjustment rates of EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 are both close to 0.5% of the threshold, and those within 1% can be rated as A-level performance, but such performance is already close to 0.5%, and can be rated as A+.


4-2.Conversion efficiency, light load, fan speed and5VsbStandby


4-2-1.Load balancing efficiency


The test conditions of conversion efficiency and the voltage test of balanced load are both measured under 230 VAC and 50 Hz environment, and the current configuration is consistent.


EVGA SuperNOVA 650 G3 conversion efficiency



EVGA SuperNOVA 750 G3 conversion efficiency


4-2-2.No load and light load


PS-On turns on the power supply and the EVGA SuperNOVA 650 G3 has an AC input power of about 6W when it is unloaded.
PS-On turns on the power supply, and the AC input power is about 5W when the EVGA SuperNOVA 750 G3 is unloaded.


The light load tests are power DC outputs 12W, 30W, 50W, 75W and 100W respectively.


Among them, 12W is the power consumption of the analog low power consumption platform, which can only be achieved by a few minimized low power consumption ITX/STX platforms in standby state.
30W and 50W represent the power consumption of most PC platforms in desktop standby, 75W and 100W are typical light-load application power consumption, representing web browsing and Office office applications.
The test mainly evaluates the voltage stability of the power supply, and the three main output voltages must be within 5% of the Intel ATX12V specification. In addition, the conversion efficiency and fan speed are obtained.


The EVGA SuperNOVA 650 G3 has a light load, normal output range, and the fan does not rotate when ECO temperature control is turned on.


The EVGA SuperNOVA 750 G3 has a light load, normal output range, and the fan does not rotate when ECO temperature control is turned on.

Comparison of Average Conversion Efficiency at 30W~100W Output;


4-2-3.Fan speed
The EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 power supplies use a heat dissipation fan model of H1282412L, which is a 128mm size fan using HDB(Hydro Dynamic Bearing) fluid dynamic bearing, with a working voltage of 12V and a rated current of 0.18A It is a low-speed heat dissipation fan. The fan blade is shaped like a 7-leaf sickle and belongs to the design of wind pressure type. The fan blade has the exclusive E-logo of EVGA. Fan label has perfect safety regulations certification and product quality inspection stamp.



The ECO temperature control switch button of EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 power supplies is arranged on the air outlet side of the power supply, which is convenient for users to switch without opening the chassis. When the temperature cOntrol switch is turned on, the ECO temperature control mode is entered. when the temperature control switch is turned Off, the fan will not start until the power supply temperature reaches the threshold. at this time, there is a power interval where the fan does not rotate, which is also called Fanless mode.



Evga supernova 650g3 fan speed


Evga supernova 750g3 fan speed



At room temperature of 24 ℃, EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 power supplies have a Fanless interval of 0-250 W. Users of single CPU and single graphics card will not normally trigger the fan to start using ECO temperature control mode. The tests were carried out with an overload of 50W to achieve higher fan speed. The cruising speed of the two power-off temperature-controlled fans was 800RPM, the middle speed was 1100RPM, and the full speed was 1300RPM.


Compared with the kilowatt-grade EVGA SuperNOVA 1000 G3, the fan speed of EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 is lower when the temperature control is turned off or the middle power output is turned off. The fan crushes at 1100RPM when the temperature control is turned off. Under the same conditions, the fan speed of EVGA SuperNOVA 650 G3 and SuperNOVA 750 is only 800RPM, and the noise is obviously reduced. In the middle acceleration, the rotation speed of EVGA SuperNOVA 650 G3 and SuperNOVA 750 is about 1100RPM, which is also lower than the 1600RPM of SuperNOVA 1000 G3.


EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 using low speed fans perform slightly better in noise than SuperNOVA 1000 G3.


4-2-4.5VsbStandby efficiency


The requirements for 5Vsb in Intel ATX12V v2.31 specification are: standby no-load consumption is less than 1W, and conversion efficiency should be higher than 50%, 60% and 70% under the load of 0.1A, 0.25A and 1A.


The input power consumed by 5Vsb of EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 power supplies is 0.17W at no load, which can meet the European Union’s ErP Lot 6 2013 standard. The efficiencies of 0.1A, 0.25A and 1A are relatively high, which can meet the requirements of Intel ATX12V v2.31, and the 5Vsb voltage is relatively stable.




4-3.Cross load


Crossover load is designed according to Intel ATX12V 2.31 and SSI EPS12V 2.92 power supply design guidelines, combined with recent high-power discrete graphics cards and low-power ITX/STX platforms.


The test was divided into 7 files:
Load 1-12V Bias: Limit Bias, Test Voltage Stability under 12V Full Load, 5V, 3.3V No-Load.
Load 2-5V Pull Bias: Limit Pull Bias, Test Voltage Stability under 5V Full Load, 12V, 3.3V No Load.
Load 3-3.3V Bias: Limit Bias, Test Voltage Stability of 3.3V Full Load, 12V, 5V No Load.
Load 4-light load of the whole machine: test the voltage stability when the whole machine is under extremely low load.
Load 5-Full load of auxiliary circuit, 12V light load: 5V, 3.3V maximum load, 12V light load, simulating the simultaneous startup of multiple mechanical hard disks.
Load 6-Full load of the whole machine: 12V, 5V and 3.3V are simultaneously pulled to the maximum load, simulating full load of the whole machine;
Load 7-Lay Stress on 12V, Minor Road Lightweight: 12V Maximum Load, 5V, 3.3V Lightweight, Simulate Extreme Overclocking, or Use Single SSD to Run 3D Games;


Cross load is also mainly used to check the stability of the output voltage of the power supply. The output voltage must be within the range of 5% specified in Intel ATX12V specification. The smaller the voltage deviation from the rated value, the better. The load regulation rate is the voltage drop condition, and the smaller the value, the stronger the voltage stability.


EVGA SuperNOVA 650 G3 cross-load input and output


EVGA SuperNOVA 750 G3 Cross-Load Input and Output


The EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 power supplies performed stably in the cross-load test process (750 G3 was accidentally overloaded to 1000W), and the voltage load adjustment rate of each group was relatively small, not exceeding 1%.


4-4.Ripple and noise


Ripple & Noise is also an item that attracts much attention. Excessive ripple will disturb the digital circuit and affect the stability of the circuit. From ” the hard disk with too much ripple has bad areas” to ” the ripple is unstable and explodes everywhere” (note: here it should be ripple, not ripple), which is enough to show the importance ordinary users attach to it.


Ripple and noise are AC components in power supply DC transmission. Part of them may be AC components that still exist after AC power is rectified and stabilized. Part of them is switching noise generated by circuit transistors themselves. If the voltage is observed by oscilloscope, it can be seen that the voltage fluctuates like water ripple, so it is called ripple.


Intel ATX12V v2.31 stipulates that the Vp-p of output ripple and noise of +12V, +5V, +3.3V, -12V and +5Vsb shall not exceed 120mV, 50mV, 50mV, 120mV and 50mV respectively. This test is mainly aimed at 12V, 5V, 3.3V and 5Vsb and does not require -12V. In the test, a digital oscilloscope was used to measure at the measuring point of the jig board in accordance with Intel ATX12V v2.31 specification under an analog bandwidth of 20MHz and the decoupling capacitor was connected in parallel.


Seven meaningful gears were selected in the test. 50W stands for desktop standby, 100W stands for office and Internet access, 300W stands for single graphics card games, and full load and pull bias are the conditions when the power supply is under the highest load.
The current configurations of 50W, 100W, 300W and full load are the same as the balanced load, while the current configurations of 12V pull-off, 5V pull-off and 3.3V pull-off are the same as the full load limit pull-off of 3rd gear in the cross load test.


EVGA SuperNOVA 650 G3 voltage ripple condition



Oscilloscope screenshot:
Channels 1, 2 and 3 are 12V, 5V and 3.3V from top to bottom, and the test conditions are fully loaded.



EVGA SuperNOVA 750 G3 voltage ripple condition



Oscilloscope screenshot:
Channels 1, 2 and 3 are 12V, 5V and 3.3V from top to bottom, and the test conditions are fully loaded.



4-5.Full load holding time


Hold-up Time refers to the time when the main DC voltage output value drops by 5% after AC power failure. According to Intel ATX12V v2.31 standard, for the requirement of increasing the output voltage of each group by 1ms, the hold-up time for power failure shall not be less than 17ms when the power supply is at full load output. According to Intel regulations, PWR-OK (i.e. Power-Good signal, PG) power-down retention time should also be greater than 16ms.


This means that in the face of AC power failure within 16ms or the gap between switching to UPS, the power supply can maintain the operation of the computer without shutdown or restart. At the same time, in order to maintain the normal operation of other hardware, the power failure holding time of DC voltage must be longer than that of PG, otherwise other hardware cannot maintain the normal working state, or it is too late to take emergency measures such as mechanical hard disk head homing, SSD power failure protection, etc.


The test current configuration is the same as the full load of the balanced load, mainly examining the holding time of 12V, 5V and PG. If the subsequent SSD uses 3.3V more, the holding time test of 3.3V will be considered.



Oscilloscope screenshot


EVGA SuperNOVA 650 G3


12V:


5V:


Power-Good:


EVGA SuperNOVA 750 G3


12V:

5V:


Power-Good:


Power-down hold time comparison:

The holding time measured by EVGA SuperNOVA 650 G3 and SuperNOVA 750 G3 under full load can meet the requirements of Intel ATX12V specification.


5.Summary rating


Finally, it is the (award) segment that the audience likes to see.


As I said in the EVGA SuperNOVA 1000 G3 evaluation, miniaturization of power supply is the current trend. Compared with 1000W products, users are generally easier to accept low-power power supplies, so the two power supplies were specially tested.


The performance of the new Leadex II scheme is excellent, especially in the voltage stability and ripple items. Although it is only 80Plus gold medal, it does not lose to the white gold medal under light load.


EVGA SuperNOVA 650 G3 can already meet the needs of most mainstream users, but the number of interfaces is not very large. According to the circuit design and material level, the module wiring board of the power supply body should be able to configure one more group of SATA module interfaces, so that it can have 3 groups of 3xSATA and a total of 9 SATA interfaces, or the module lines can use 2 groups of 4xSATA. The lack of such a configuration may be due to the positioning of the product itself.


If users need to use a high-end motherboard with 8+4Pin or 8+8Pin CPU power supply, 2 double 8Pin graphics cards and 6 or more mechanical hard disks, please select the SuperNOVA 750 G3 with 2 CPU 4+4Pin interfaces, 6 6+2Pin PCIE interfaces and 9 SATA interfaces. if you can meet the discount, the latter will not be too expensive.



EVGA SuperNOVA 650 G3Rating and Description of Subdivided Projects:


Appearance: A, all aspects of the packing box body are OK, and the fan net cover can be cooler.
Working materials: B+, OK, upper and lower in materials;
Conversion efficiency: B, Krypton S+, Titanium S, Platinum A, Gold B, Silver C, Bronze D;
Voltage stability: A+, a within 1%, first gear within 0.5%, s within 0.5%;
Ripple noise: within s, 20mV and close to 10mV, s;
Retention time: a, average more than 25mS;;
Working noise: C+, non-standard fan, slightly higher cruise speed, full load noise audible;
Price: B, the price/power ratio is between 1 and 1.5, obtaining B;
After sales: A-, lifetime warranty S+(is there one), 12 years s, 10 years a, 7 years new a-;


Evga supernova 650g3 rating:T3, recommended by the mainstream, update date 2018-04-14.


Note: Since only 3 PCIE interfaces are provided and support for many high-end graphics cards is lacking, EVGA SuperNOVA 650 G3 is rated T3, which is suitable for mainstream users.


EVGA SuperNOVA 750 G3Subdivision rating:


Appearance: a
Work Material: B+
Conversion efficiency: b
Voltage stability: A+
Ripple noise: s
Hold time: a
Working noise: C+
Price: b
After sales: a


Evga supernova 750g3 rating:T2, high-end recommendation, update date 2018-04-14.


Advantages:


-10-year new warranty service;
-150mm ultra-short casing;
-Long retention time;
-Excellent ripple control;
-80Plus gold medal efficiency, light load efficiency is good;
-Good voltage stability;
-Clean workmanship and good materials;
– 650W/750W@50The output capacity of C;
-fan low load shutdown technology;
-Full module, compatible with the same brand product module line;


Inadequacies:
-There is room for optimization of fan noise;
-650 G3 SATA power supply interface is less than normal;

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