Manufacturer: EVGA

Introduction and Features


EVGA recently introduced three new Platinum certified power supplies in their popular SuperNOVA line, the 650P2, 750P2 and 850P2. All three power supplies are 80 Plus Platinum certified for high efficiency and feature all modular cables, high-quality Japanese brand capacitors, and a quiet 140mm cooling fan (with the ability to operate in silent, fan-less mode at low to mid power levels). And in addition to delivering excellent performance with quiet operation, these new power supplies are backed by a 10-year warranty!


EVGA was founded in 1999 with headquarters in Brea, California. They continue to specialize in producing NVIDIA based graphics adapters and Intel based motherboards and keep expanding their PC power supply product line, which currently includes thirty-four models ranging from the high-end 1,600W SuperNOVA T2 to the budget minded EVGA 400W power supply.


In this review we will be taking a detailed look at both the EVGA SuperNOVA 650P2 and 750P2 power supplies. It’s nice when we receive two slightly different units in the same product series to look for consistency during testing.

Here is what EVGA has to say about the new SuperNOVA P2 Platinum PSUs: “The unbeatable performance of the EVGA SuperNOVA P2 power supply line is now available in 850, 750 and 650 watt versions. Based on the award winning P2 power supplies, these units feature 80 Plus Platinum rated efficiency, and clean, continuous power to every component. The ECO Control Fan system offers fan modes to provide absolutely zero fan noise during low to medium load operations. Backed by an award winning 10 year warranty, and 100% Japanese capacitor design, the EVGA SuperNOVA 850, 750 and 650 P2 power supplies offer unbeatable performance and value."


EVGA SuperNOVA 650W P2 and 750W P2 PSU Key Features:

•    Fully modular cables to reduce clutter and improve airflow
•    80 PLUS Platinum certified, with up to 92% efficiency
•    LLC Resonant circuit design for high efficiency
•    Tight voltage regulation, stable power with low AC ripple and noise
•    Highest quality Japanese brand capacitors ensure long-term reliability
•    Quiet 140mm Double ball bearing fan for reliability and quiet operation
•    ECO Intelligent Thermal Control allows silent, fan-less operation at low power
•    NVIDIA SLI & AMD Crossfire Ready
•    Compliance with ErP Lot 6 2013 Requirement
•    Active Power Factor correction (0.99) with Universal AC input
•    Complete Protections: OVP, UVP, OPP, OCP and SCP
•    10-Year warranty and EVGA Customer Support

Please continue reading our review of the EVGA SuperNOVA 650/750 P2 PSUs!!!

Seasonic's Snow 750W takes the prize again

Subject: Cases and Cooling | July 10, 2015 - 04:42 PM |
Tagged: Snow Silent-750, seasonic, 80 Plus Platinum

If you had any doubts about the quality of the Seasonic Snow 750W PSU after reading our review then perhaps [H]ard|OCP will convince you and maybe even win one.  You will notice the same colour award offered and a rather subtle recommendation at the end of the article.  Seasonic has really become what PC Power & Cooling was back in the day, priced at a premium but absolutely worth it.  If you are looking for a PSU in the 750W range then this model should be at the top of your wishlist.


"Seasonic is without a doubt the "best" computer PSU designer and builder in North America in our opinion. It has continually made award winning enthusiast class PSUs which is simply not easy in today's market. Six of its last eleven units reviewed here have "only" produced HardOCP Silver awards though. Do we have a new Gold [H] today?"

Here are some more Cases & Cooling reviews from around the web:


Source: [H]ard|OCP
Manufacturer: Seasonic

Introduction and Features


It’s always a happy day at the PC Perspective Test Lab when the delivery truck drops off a new Seasonic power supply for evaluation! Seasonic is a well-known and highly respected OEM that produces some of the best PC power supplies on the market today. In addition to building power supplies for many big-name companies who re-brand the units with their own name, Seasonic also sells a full line of power supplies under the Seasonic name. Their new Snow Silent Series now includes two models, the original 1050W and the new 750W version we have up for review.

The Snow Silent Series power supplies feature a stylish white exterior along with top level Seasonic build quality. The Snow Silent-750 is a next generation XP-Series (XP2S) power supply that comes with fully modular cables and a 120mm cooling fan with Fluid Dynamic Bearings. It features an upgraded S3FC Hybrid Fan Control Circuit that provides fanless operation up to ~50% load. The Snow Silent-750 is designed to provide high efficiency (80 Plus Platinum certified) and tight voltage regulation with minimal AC ripple.


Seasonic Snow Silent 750W PSU Key Features:

•    High efficiency, 80 Plus Platinum certified
•    Fully Modular Cable design with flat ribbon-style cables
•    Seasonic Patented DC Connector Panel with integrated VRMs
•    Upgraded Hybrid Silent Fan Control (S3FC: Fanless, Silent and Cooling)
•    120mm Fan with Fluid Dynamic Bearings (FDB)
•    Ultra-tight voltage regulation (+2% and -0% +12V rail)
•    Supports multi-GPU technologies (four PCI-E 6+2 p connectors)
•    High reliability 105°C Japanese made electrolytic capacitors
•    Active PFC (0.99 PF typical) with Universal AC input
•    Dual sided PCB layout with dual copper bars
•    Energy Star and ErP Lot 6 2013 compliance
•    7-Year manufacturer's warranty worldwide

Please continue reading our Seasonic Snow Silent-750 power supply review!

550W of fanless power from Enermax

Subject: Cases and Cooling | April 27, 2015 - 02:49 PM |
Tagged: Fanless PSU, enermax, Digifanless, 550W, modular psu, 80 Plus Platinum

The Enermax Digifanless 550W PSU is completely modular and as the name implies there is no fan to be found in this PSU.  Instead large heatsinks take up most of the room inside the casing, with a mix of Nippon Chemi-con, Enesol and DuraTech capacitors with the PFC and power components hidden under those heatsinks.  [H]ard|OCP's testing proved that the 80 PLUS Platinum rating that Enermax claims for this PSU is well deserved with efficiency over 90% in testing.  [H] was more than impressed with the overall build quality and performance of this heatsink, however the MSRP is significantly higher than the competitions which was why this PSU was left holding Silver.  It is not for sale yet here in North America so there is still a chance that a price reduction could make this PSU very attractive for those looking for a silent PC build.


"Enermax joins the ranks of the fanless computer power supply builders. These are of course a must-have for those enthusiasts looking for a zero noise profile computer build. Many times these sorts of builds of course suffer from very hot environments, so fanless PSUs are a perfect fit for our testing criteria."

Here are some more Cases & Cooling reviews from around the web:


Source: [H]ard|OCP

Seasonic Snow Silent; if you prefer your PSU meek and pale

Subject: Cases and Cooling | March 23, 2015 - 02:30 PM |
Tagged: seasonic, snow series, modular psu, 1050W, 80 Plus Platinum

The ability to deliver stable power is the primary attribute we look for in a PSU but the aesthetics should not be ignored, especially for modders and those with glass cases.  The Seasonic Snow Silent Series 1050W PSU is aptly named for its white finish which gives it a unique look in a very crowed market but the exterior does not tell the whole story.  With a total of eight 6+2 PCIe plugs and a 12V rail capable of providing 1044W @ 87 amps this PSU will certainly handle Crossfire or SLI and it will do so fairly quietly.  TechPowerUp liked the 7 year warranty as well as the performance and look of this PSU, especially considering it is priced roughly the same as the bog standard grey model which does not have the improved fan of this model.


"Seasonic released a special version of their Platinum offering with 1050 W capacity; it comes with a while paint job and is equipped with an FDB fan and a relaxed fan profile for less noise output, which will thrill users looking for a quiet high-performance PSU."

Here are some more Cases & Cooling reviews from around the web:



Source: techPowerUp

You are going to need 240V for this one; Superflower's 2000W PSU

Subject: General Tech | February 19, 2015 - 06:21 PM |
Tagged: kilowatt, modular psu, superflower, Leadex Platinum, 80 Plus Platinum, 8 pack edition, two freaking kilowatts

The perfectly reasonable 2 kilowatt Superflower is only able to provide a paltry 166.6 amps on its single +12v rail so you will need to be absolutely positive that your rig will not need a more powerful source of power.  Available only in the UK, it is possible that Superflower is not exaggerating when the claim it will accept 100V~240V, perhaps a budding North American electrician could set up a test to see if this 80 PLUS Platinum rated PSU can actually be powered by any mere wall wart.  No ones seems to mention the weight of this PSU but it does measure 150 x 86 x 220 mm which is a pity as this PSU would be perfect for an mATX build.  You can catch a video of this PSU in action on the last page of the review, powering a PC not an arc welder.


"‘Holy Moly’. This is the PG version of the first words I said when we were offered the new 2000 watt Superflower power supply for analysis. Renowned and highly respected UK overclocker Ian ’8Pack’ Parry partnered up with SuperFlower for the creation of this new monster unit. The ’8 Pack Edition’ is a fully modular design, 80 Plus Platinum certified and ships with enough cables to choke Godzilla."

Here are some more Cases & Cooling reviews from around the web:


Source: KitGuru

CES 2015: Corsair HX1200i Power Supply Announced - Fully Modular 1200W Platinum PSU

Subject: Cases and Cooling | January 6, 2015 - 12:00 PM |
Tagged: PSU, power supply, modular psu, corsair, ces 2015, CES, 80 Plus Platinum, 1200w

Today Corsair is announcing a new member of HX series of power supplies, the HX1200i.


Providing 1200W of 80 PLUS Platinum certified power, Corsair says the HX1200i will be able to drive up to quad-GPU setups with 92% or better efficiency.  The fully modular design uses flat ribbon cables for clean cable routing, and Corsair has made use of "specially selected low-noise components" which include 100% Japanese capacitors rated to 105° C. For low noise the Zero-RPM fan mode only spins the PSU fan when needed, and the PSU is rated for continuous power at a full 50° C.


The HX1200i will carry a 7-year warranty, and also includes Corsair Link integration which allows users to customize the fan speed and offers "real-time monitoring of the PSU’s voltages, efficiency and temperatures".


  • 1200 watts
  • 80 PLUS Platinum efficiency
  • Fully modular DC cable set
  • 100% Japanese electrolytic capacitors rated at 105°c
  • Zero-RPM fan mode for virtually silent operation at low and medium loads
  • Corsair Link support for monitoring efficiency, voltages, power output, temperature, and fan speed plus user customizable setting of rail modes and fan speed.
  • Fluid dynamic bearing fan
  • Continuous power rated at 50° Celsius
  • 7 year warranty
  • MSRP $269.99


The HX1200i will retail at $269.99 and will be available next month, with a February 2015 release scheduled.

Coverage of CES 2015 is brought to you by Logitech!

PC Perspective's CES 2015 coverage is sponsored by Logitech.

Follow all of our coverage of the show at!

Source: Corsair

Corsair's HX1000i is good, but not quite great

Subject: Cases and Cooling | October 21, 2014 - 02:26 PM |
Tagged: modular psu, HX1000i, Corsair Link, corsair, 80 Plus Platinum

Corsair have updated their high end and high powered PSU line with the HX1000i, developed once again with CWT and sporting an 80 PLUS Platinum rating and Corsair Link integration.  The documentation is a little confusing, referring to a single 12v rail rated at 83.3A or 1000W but also mentioning it can be toggled to multiple 12V rails, not to mention the small rounding error in their math.  The actual PSU is very well constructed and passed all of the tests that [H]ard|OCP's torture chamber required of it; just not to the same level that the older HX1000 unit managed.  That is a little disappointing as you would hope that the quality would improve over time but it is in line with the competition and certainly not a bad showing, merely not what [H] had hoped for.   It is still worth your consideration so make sure to read through the whole review to see if the HX1000i meets your needs.


"Corsair's HX series represents its "second tier" line of enthusiast computer power supplies, but its new HX1000i does take the top spot when it comes to its ~1000 watt power supplies that are Platinum certified and fully modular. Let's see if this latest addition from Corsair represents its quality pedigree of days gone by. "

Here are some more Cases & Cooling reviews from around the web:


Source: [H]ard|OCP

Seasonic's Platinum 1050 beats everything but its predecessor

Subject: Cases and Cooling | October 7, 2014 - 05:42 PM |
Tagged: seasonic, Platinum-1050, modular psu, kilowatt, hybrid silent fan, 80 Plus Platinum

Lee just wrapped up a review of Seasonic's 1050 and 1200W Platinum PSU's but why not revisit the powerful 1050W PSU in [H]ard|OCP's latest PSU review.  Their testing methodology differs from Lee's as does the hardware used to test it.  This way you get even more information about how this PSU functions under differing conditions and you will be more informed about your possible purchase.  Reading the whole review is the best way to fully understand this fully modular PSU's strengths but if you insist on skipping to the conclusion then this PSU is both better than the competition and less expensive.  The only constructive criticism that [H] could offer was that it does not really improve in any major way over Seasonic's previouslt released 1000W PSU.


"Seasonic is one of our long-time favorites when it comes to truly high-end power supplies. The new PLATINUM-1050 PSU claims to deliver excellent power efficiency and does so with a fully modular design. Seasonic is often known designing products with excellent sound profiles. Does the PLATINUM-1050 fit the profile?"

Here are some more Cases & Cooling reviews from around the web:


Source: [H]ard|OCP
Manufacturer: Seasonic

Introduction and Features


Today we have a double header for your reading enjoyment. Not one, but two Platinum Series power supplies from Seasonic. The two latest additions to Seasonic’s flagship product line are the Platinum 1050W and Platinum 1200W PSUs. The power supplies feature tight voltage regulation (±1~2%), quiet operation (fanless mode), and high efficiency (80Plus Platinum certified). Both PSUs are fully modular and come backed by a 7-year warranty.

Seasonic is a well known and highly respected OEM that produces some of the best PC power supplies on the market today. In addition to supplying power supplies to many big-name companies who re-brand the units with their own name, Seasonic also sells a full line of power supplies under the Seasonic name. Both new power supplies feature an improved Hybrid Fan control circuit and upgraded copper conduction bars on the main PCB, which together help increase efficiency and performance.


Seasonic Platinum 1050W & 1200W Special Features

Ultra Tight Voltage Regulation Improved load voltage regulation keeps the voltage fluctuations on the 12V output within +2% and -0% (no negative tolerance), and on the 3.3V and 5V outputs between +1% and -1%, which (under 80 Plus load conditions) results in smooth and stable operation.

Seasonic Hybrid Silent Fan Control The industry first, advanced three-phased thermal control balances between silence and cooling. The Hybrid Silent Fan Control provides three operational stages: Fanless, Silent and Cooling Mode.  In addition, a selector switch is provided to allow for manual selection between the Seasonic S2FC (fan control without Fanless Mode) or S3FC (fan control including Fanless Mode).

Reduced Cooling Fan Hysteresis is achieved by a new fan control IC, which optimizes how frequently the fan switches on and off. At 25°C ambient temperature the fan turns on when the load rises above 30% (±5%) and turns off when the load drops below 20% % (±5%). Due to this lag in response the fan switches on and off less frequently, which reduces power loss in Fanless and Silent Mode.

Dual Copper Conduction Bars on the power supply PCB help reduce impedance and minimize voltage drop, which further improves efficiency and performance.

80Plus Platinum The Platinum 1050W & 1200W power supplies are certified in accordance to the 80PLUS organization's Platinum standards, offering performance and energy savings with up to ≥92% efficiency and a true power factor of greater than 0.9 PF.

Full Modular Design (DC to DC) The Seasonic Platinum Series power supplies feature an integrated DC connector panel with onboard VRM (Voltage Regulator Module) that enables not only near perfect DC-to-DC conversion with reduction of current loss/impedance and increase of efficiency but also a fully modular DC cabling that enables maximum flexibility of integration and forward compatibility.

Seasonic Platinum Series 1050W & 1200W PSU Key Features:

•    80Plus Platinum certified super high efficiency
•    Ultra tight voltage regulation
•    Fully Modular Cable design with flat ribbon-style cables
•    Seasonic DC Connector Panel with integrated VRMs
•    DC to DC Converter design
•    Hybrid Silent Fan Control (3 modes of operation: Fanless, Silent and Cooling)
•    High-quality Sanyo Denki San Ace dual ball bearing fan with PWM
•    Ultra-tight voltage regulation (+2% and -0% +12V rail)
•    Dual copper conduction bars on PCB for improved efficiency and performance
•    Supports multi-GPU technologies
•    Conductive polymer aluminum solid capacitors
•    High reliability 105°C Japanese made electrolytic capacitors
•    ErP Lot 6 2013 compliant and Intel Haswell processor ready
•    High current Gold plated terminals with Easy Swap connectors
•    Active PFC (0.99 PF typical) with Universal AC input
•    7-Year manufacturer's warranty worldwide

Please continue reading our Seasonic Platinum 1050W & 1200W power supply review!