Manufacturer: Corsair

Introduction and Features

Corsair recently released three new HXi Series Fully Modular power supplies: the HX1000i, HX850i, and the HX750i. All three power supplies are 80 Plus Platinum certified and support the Corsair Link digital interface. Corsair continues to offer a full line of high quality power supplies, memory components, cases, cooling components, SSDs and accessories to market for the PC enthusiast and professional alike. In this review we will be taking a detailed look at the HXi Series 1000W fully modular power supply.

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All three of the new Corsair HXi Series power supplies are optimized for silence and high efficiency. Zero RPM fan mode means the fan doesn’t spin until the PSU is under heavy load, and the fan itself is custom-designed by Corsair for low noise operation even at high loads. Flat ribbon-style black cables are fully modular to facilitate fast, clean builds.

The Corsair HXi Series is built with high-quality components, including all Japanese electrolytic capacitors, and is guaranteed to deliver clean, stable, continuous power, even at ambient temperatures as high as 50°C. HXi Series users can also install Corsair Link software to monitor power usage, efficiency, and fan speed.

80 Plus Platinum: High Efficiency – Low Heat HXi Series PSUs are 80 Plus Platinum certified, making them among the most efficient on the market. With efficiency of at least 92% at 50% load, your PC will remain cool and quiet, potentially saving money in the process.

Corsair Link Ready While the HXi is an analog power supply, it features a built in analog to digital bridge to communicate vital information to the Corsair Link software via USB. This allows the user to monitor and log fan speed, current and voltage of the +3.3V, +5V, and +12V rails, monitor power out, display power in and efficiency, and enable/disable OCP on the +12V rails.

Zero RPM Fan Mode offers silent operation at low to moderate loads. Thanks to a highly efficient design, the HXi Series power supplies generate minimal heat and are able to operate in a silent, zero RPM Fan Mode for up to 40% of the PSU’s maximum load (at 25°C room temperature). This means the HXi power supply can be completely silent while the PC is performing less intensive tasks. As the load and temperatures rise within the PSU, the thermally controlled fan gradually spins up for quiet operation even during more demanding computing.

Optimized for Low Noise Corsair continues to branch out beyond memory and power supplies and is paying close attention to fans and their applications. Within a PSU, the most important feature of a fan is high static pressure, allowing the fan to push air through the relatively high density of components. The NR135P intake fan was specifically designed to move more air through the power supply components with less noise. Fan blades are properly balanced to prevent resonance at higher RPMs and the fan features fluid dynamic bearings for quiet operation and long life.

In addition to the specially designed Corsair cooling fan the components on the HXi Series PCB are laid out to allow air to easily flow between them. The HXi PSUs also include fully modular cables made flat for easy installation and reduced airflow resistance.

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Corsair HX1000i PSU Features summary:

•    1,000W continuous DC output (up to 50°C)
•    7-Year Warranty and Comprehensive Customer Support
•    80 PLUS Platinum certified, at least 92% efficiency under 50% load
•    Corsair Link ready for real-time monitoring and control
•    Fully modular cables for easy installation
•    Flat ribbon-style, low profile cables help optimize airflow
•    Zero RPM Fan Mode for silent operation up to 40% load
•    Quiet fluid dynamic fan bearing for long life and quiet operation
•    High quality components including all Japanese electrolytic capacitors
•    Active Power Factor correction (0.99) with Universal AC input
•    Safety Protections : OCP, OVP, UVP, SCP, OTP, and OPP
•    MSRP for the HX100i : $229.99 USD

Please continue reading our review of the Corsair HX1000i PSU!!!

A mid-weight PSU from Seasonic, the Platinum 660W

Subject: Cases and Cooling | February 14, 2013 - 05:47 PM |
Tagged: rosewill, PSU, Platinim 660, modular psu, 80plus platinum

If the 1000W Rosewill PSU that Lee just reviewed is more power than your system needs, [H]ard|OCP has a slightly less powerful 660W 80Plus Platinum PSU you could consider that Lee has also looked at.  At $150 it is fairly expensive for a 660W PSU, but a 7 year warranty and a Platinum efficiency rating do not come cheap.  With four 6+2 PCIe connectors and up to 55A on the 12V rail and an unparalleled peak change of 0.01v this will solidly power several GPUs.  [H] was so impressed that they couldn't think of a PSU to contrast against, this unit is miles ahead of the competition when it comes to the purity of the voltages provided.

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"Seasonic's new SS-660XP comes to us boasting high end PSU features in what we can consider a smaller wattage package than what we are used to seeing. This PSU has a fully modular design, great efficiency, optional Hybrid fan control allowing fanless, silent, and normal cooling modes. Does Seasonic have another winner?"

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Source: [H]ard|OCP
Manufacturer: Rosewill

Introduction and Features

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Rosewill continues to expand their power supply lineup with the introduction of four new units in the Tachyon Series. All Tachyon Series power supplies are certified 80Plus Platinum to deliver maximum efficiency. We will be taking a detailed look at the Flagship Tachyon-1000 in this review.

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Tachyon Series 1000W PSU Key Features:

• 80Plus Platinum certified
• Continuous 1000W output @50°C
• Single powerful +12V rail – ideal for Gaming Systems
• SLI & CrossFire Ready – six 6+2 pin PCI-E connectors
• Modular cable design
• Mesh sleeving on all cables for easier cable routing
• Silent 140mm fan with Auto Fan Speed Control
• Fanless operation at low power
• Active PFC with Universal AC input (100-240V)
• Protection Circuits: OC, OV, OP, UV, and SC Protection,
• Safety and EMI Approvals: cTUVus, FCC, CE, ROHS
• 5-Year Warranty

Please continue reading our Rosewill Tachyon power supply review!

Get Platinum power for about $100

Subject: Cases and Cooling | August 17, 2012 - 06:11 PM |
Tagged: PSU, antec, 80plus platinum, Earthwatts Platinum 650W

At $120 on NewEgg, the Antec Earthwatts Platinum is not a bad choice for those looking for power and efficiency.  Although it is SLI rated, with only two 6+2 PCIe power connectors you will need to rely on molex adapters to run two cards and at 650W they will not be current flagship models.  Legit Reviews saw some questionable results while testing but for a PSU of this price, especially such a quiet and efficient one, it comes with a recommendation to stop worrying and pick it up.

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"When it comes to performance, besides its high electrical efficiency which is expect from an 80Plus Platinum unit. The Earthwatts Platinum 650W PSU also excels in acoustics, with the unit running entirely silent across the entire nominal load range. The high efficiency also allows it to operate at fairly low temperatures as little energy is wasted as heat. Even though most hardcore enthusiasts would find this unit's electrical performance mediocre, we believe that the ripple suppression and voltage regulation of the Earthwatts Platinum 650W unit is more than acceptable for a sub-$100 product..."

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