ocaholic - PSUs > EVGA SuperNOVA 1000 G2 PSU Review

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Preview

Page 2 - Preview

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Delivery and Specifications

The EVGA SuperNOVA G2 1000 W is modular power supply.

Cables
Cable	Length
1 x ATX 20+4 pin	60 cm
2 x EPS/ATX 12V (8 & 4+4) pin	75 cm
4 x PCI-E 6+2 pin	75 cm
2x PCI-E 6+2 + 6 pin	75, 90 cm
2x3 SATA	55, 65, 75 cm
2x2 SATA	55, 65 cm
1x2 Molex + 1 x Floppy	55, 65, 100 cm
1x3 Molex	55, 65, 75 cm

The EVGA SuperNOVA G2-1000 has longer cables than PSUs usually have. With its 8 PCIe connectors this PSU can also be used for more exotic applications like (Multi GPU OpenCL/CUDA).
The connectivity is amazing for a 1000W PSU - thanks EVGA!
Two of the Sata cables have three connectors and two have only two connectors each.

Specifications
Voltage	Current	Power
+ 3.3 V	24 A	120 Watt	1000 Watt (Total)
+ 5.0 V	24 A	120 Watt
+ 12 V	83.3 A	999.6 Watt
- 12 V	0.5 A	6 Watt
+ 5 Vsb	2.5 /3A	12/15 Watt

The Specifiacations are basically good. The 5VSB converter is a ICE3B0565 which is rated only for 12W. EVGA did rate the output power at 15W. However it is very likely that this converter is able to deliver the 15W so we do not rate this as negative. Interesting is only that the Super Flower Leadex (same controller) is rated with 2.5A on 5Vsb.

The EVGA SuperNOVA G2 1000W is 80Plus Gold certified. This means, that the efficiency of this psu should be over 87% at 20% load,
over 90% at 50% load and over 87% at 100% load.

Feature-list:

80Plus Gold
OVP, UVP, OCP, SCP, OPP, OTP
Dimensions (W x H x D): 150 mm x 86 mm x 200 mm
140 millimeter fan
Warranty: 10 Years
Price: 190 CHF

Remarkable is the high depth of this PSU and the long lasting Warranty.

Page 3 - Delivery / Specs

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A Look Inside

The first hint for a high quality PSU we can see already when we take a first look at its case, which looks nice and is well built.

Right at the Input there is a X capacitor. On the main PCB the transient filtering stage continues with two X, four Y, two CM chokes, 2 MOV (Metal-Oxid-Varistor) and a TVS. Aditionally there is a NTC termistor for inrush curent limitation. A mechanical relais shorts the NTC termistor for normal operation. The transient filtering stage is well done.

The two bridge rectifiers got a heatsink each. The PFC booster consists of two IPP50R199CP mosfets (550V, 0.2Ohm, 17A) and a C3D10060A (600V, 10A, Qc 25nC) SiC Schottky diode. The APFC is controled by a NCP1653A from ON Semiconductor. The NCP1653A has a gate driver performance of 1.5A. This PSU has two APFC capacitors from Nippon Chemi-Con (KMQ series; 470uF, 400V, 105C each). The total capacitance of 940uF is very competitive for a 1000W PSU. Two IP50R250CP (550V, 0.25Ohm, 13 A) Mosfets are used on the primary side of the LLC resonance converter. The LLC resonance converter is controled by an ASIC with the name AA9013.
The primary side of this PSU is solid. The effort to save money however is visible. Many components are not above the spics especially in voltage rating. This also explains the TVS which is not often seen in PC PSUs.

On the secondary side eight IPP041N04N (40V, 4.1mOhm, 80A) mosfets take care of the 12V rectification. Those mosfets are directly cooled via two heatsinks. The design of the secondary side is solid. 3.3 and 5V are generated from 12V using DC-DC converter. Those are located on two daughter PCB's. The DC filtering is done using Nippon Chemi-Con capacitors. Those are extremely high end. The connection of the main PCB to the connector PCB is well done too. The connector PCB has some aditional capacitors from Capxon which are not japanese. This does not comply with the advertised statement "100% japanese Capacitors"!

Page 4 - A Look Inside

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Input/Output Power and Efficiency

Page 5 - Input/Output Power and Efficiency

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Result Analysis and Discussion

Efficiency 115V
Load	Pin(W)	Pout(W)	PF	Efficiency
20 %	223.74	201.72	0.992	90.159 %
50 %	553.39	503.40	0.994	90.966 %
100 %	1'131.63	1'002.50	0.996	88.580 %

The Gold Energy certificate requirements (87%, 90%, 87%) are surpassed with huge margin.
This PSU is very simmilar to the Leadex series from Super Flower (Platinum certified). Due to cost reduction the Platinum efficiency can no longer be sustained. However the efficiency is excellent considering that this is a Gold certified PSU.
It's uncommon to see a PSU with such a high margin to the 80Plus requirement.

Output Stability
Load	Rail	Loading(A)	Output(V)
20 %	5V	2.53	5.036
	3.3V	2.53	3.316
	12V	14.52	12.17
	5VSB	0.53	5.065

50 %	5V	6.33	5.02
	3.3V	7.96	3.3
	12V	36.36	12.13
	5VSB	1.32	5.015

100 %	5V	12.665	5.003
	3.3V	12.662	3.275
	12V	72.90	12.08
	5VSB	2.698	4.945

Noise
Load
20 %	Noiseless
50 %	Silent
100 %	Audible

The Voltage regulation of this PSU is very good. It makes use of a DC-DC aproach, which means, that this PSU is mainly a 12V PSU and then generates 5 and 3.3V from 12V.
This is a very modern approach, and since the load is mainly on 12V it makes a lot of sense. As most PSU, which use this Topology, the voltage regulation and the crossload test do not present a problem.

Noise/Ripple
Voltage	Noise/Ripple Vpp
5V	0.007
12V	0.013
-12V	0.005
3.3V	0.014
+5VSB	0.008

Those Noise/Ripple values we got out from the Choroma test report. The noise values are extremely good. However those values are probably measured in a different way. The values should be compared to other PSU reviews with care.

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Page 6 - Result Analysis and Discussion

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Conclusion

With the EVGA SuperNOVA G2 1000W, EVGA offers a high quality PSU, which is very cost effective with its price of 200 US-Dollar. The connectivity options are amazing for a 1000W PSU and the efficiency surpasses the 80 plus Gold standard with a huge margin. Furthermore this PSU is very well built and the DC output quality is very good.
The EVGA SuperNOVA G2 1000W uses slightly cheaper components than other high end PSUs with simmilar output power rating. The biggest downside is on our opinion is, that the promised "100% japanese capacitors" statement is not completely true, since there are also some Capxon capacitors, which are definitely not from Japan.
When you consider the attractive price of this unit, the component choice is resonable and we do not rate this as a negative point.

After all this is an excellent PSU!

We rate the EVGA SuperNOVA G2 1000W with 5 out of 5 possible stars.