Wattage per litre? That is a new one SilverStone

Subject: Cases and Cooling | December 1, 2015 - 06:27 PM |
Tagged: Silverstone, modular psu, 80 Plus Platinum, Strider Platinum ST55F-PT, 550W

As the title implies, the Silverstone Strider Platinum ST55F-PT is smaller than you might expect a 550W PSU to be, at just under 6" square.  That this PSU is designed for computers of a small size is reinforced by the fact that there is only a pair of PCIe 6+2 plugs, not a problem for small systems but worth noting if you were planning on adding a second GPU.  [H]ard|OCP's testing shows that the PSU easily meets the 80 Plus Platinum standard and not only was the power delivered impressively stable but the PSU also operated quietly.  It will cost you a small premium but if you need a solid, quiet and small PSU this review is worth checking out.


"SilverStone comes to us today with a Platinum rated PSU that is also billed as having a "Power Density (of) 305W per liter." While this is a bit odd, the messaging seems to be big power in a little footprint. Let's see how this "ultra silent" fully modular PSU stacks up when it comes to serving up big-time power under big-time pressure."

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Source: [H]ard|OCP

Thermaltake Toughpower Grand 1200W, for when you need 8 PCIe power connectors

Subject: Cases and Cooling | November 3, 2015 - 01:34 PM |
Tagged: PSU, Toughpower, thermaltake, ToughPower Grand 1200W, modular psu, 80 Plus Gold

The Thermaltake Grand series has been around for quite some time and has just been refreshed with a new model and a new price.  The PSU has a single 12V rail, capable of delivering 100% of the wattage at 100A which makes sense for a kilowatt class PSU which has eight 6+2 PCIe connectors.  It is rated at 80 Plus Gold which [H]ard|OCP's testing showed was essentially accurate, their test bed just snuck under the rating at 100% load.  With a 7 year warranty and a $240 price tag it is right in the middle of the pack for PSUs of this power, not perfect but certainly OK.

If you don't need a 1000+ watt PSU then you should revist Lee's review of the Thermaltake Toughpower DPS G 850W PSU.


"Thermaltake is back with a new 1200 watt fully modular PSU. We have used Thermaltake power supplies on our test bench literally for years with excellent results. However the Toughpower line has not always been the best value out there, but today we see a 1200 watt PSU with revised pricing."

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Source: [H]ard|OCP

A good contender for powering your system, the CoolerMaster V750W

Subject: Cases and Cooling | October 2, 2015 - 03:29 PM |
Tagged: PSU, modular psu, coolermaster, V750W, 80+ gold

Cooler Master's V750W PSU is fully modular and comes with a nice selection of cabling including four PCIe 6+2 connectors and eight SATA power connectors. At 150x140x86mm (5.9x5.5x3.4") it also takes up less space than many PSUs, though not enough to fit in a truly SFF case. A single 12V rail can provide 744W at 62A which is enough to power more than one mid to high range GPU and Bjorn3D's testing shows that it can maintain that 80+ GOLD rating while it is being used.  The five year warranty is also a good reason to pick up this PSU, assuming you are not in the market for something in the kilowatt range.


"One available option soon to be available on the market for <179$, and our specimen of review today, is the CoolerMaster V750. CoolerMaster has partnered with Seasonic to produce the high quality compact “V” series PSUs which made a huge statement for CoolerMaster and told the world they were ready to push some serious power."

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Source: Bjorn3D

It has been a while since we saw a new XFX PSU

Subject: Cases and Cooling | August 18, 2015 - 03:31 PM |
Tagged: modular psu, xfx, XTR series, 550W

The XFX XTR 550W uses the Seasonic G-Series platform, a very popular choice for PSU sellers recently, with few tweaks to the overall design.  The PSU is cooled by a 135mm fan and comes with two modified 8-pin PCIe connectors, six Molex connectors, and eight SATA connectors, all of which are modular.  [H]ard|OCP strapped it into their torture room and fired it up for testing; the results of which, along with the reasonable pricing, resulted in this PSU picking up a Silver Award.  Check out the specifics right here.


"XFX comes to us today with its new XTR series power supply weighing in at 550 watts. XFX is promoting "Super Efficiency and Quality Components," "Extreme Heat Tested Capacitors," and a "True Wattage Guarantee" that touts full power at above 50C operating temperatures. Sounds exactly like our kind of PSU!"

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Source: [H]ard|OCP

Not everyone needs a kilowatt; nor perhaps the Cooler Master G550M?

Subject: Cases and Cooling | June 9, 2015 - 06:46 PM |
Tagged: cooler master, G550M, 550W, modular psu, 80 Plus Bronze

At 550W and an 80 Plus Bronze rating the Cooler Master G500M is not as powerful as many of the PSUs we have seen lately, then again at $75 it is also more affordable.  Unfortunately for Cooler Master the competition tends to be lower priced, with Corsair, SeaSonic and Thermaltake all having slightly better PSUs of a similar wattage for an equal or lesser price.  On the other hand Cooler Master's five year warranty is longer than any of the other brands and [H]ard|OCP feels that the G500M shows improvements over previous models as it passed all of their tests.  This particular model may not be a great choice but if CM continues to improve the quality of their budget priced models the next release might be a solid contender.


"Today we spend our time with a computer power supply from Cooler Master that is towards the lower end of the wattage scale coming in at 550 watts. Cooler Master claims "notably higher efficiency and voltage stability than other designs." We will see if its Bronze efficiency G550M PSU will stand up to our gauntlet and its own claims."

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Source: [H]ard|OCP

Computex 2015: G.Skill Enters PSU Market With New Ripjaws Series Power Supplies

Subject: Cases and Cooling | June 5, 2015 - 02:15 AM |
Tagged: modular psu, G.Skill, computex 2015, computex, 80+ platinum

In addition to teasing a new line of DDR4 memory, G.Skill also announced a new line of Ripjaws branded power supplies. So far, the lineup includes four models offering wattages from 750W to 1,250W. The PS750G and PS850G are rated 80 PLUS Gold while the PS850P and PS1250P are rated 80 PLUS Platinum which is nice to see (Platinum status requires 92% efficiency while the Gold models hit 90% efficiency).

GSkill Ripjaws 80Plus PSUs.jpg

The new Ripjaws PSUs are fully modular designs using all japanese capacitors and reportedly high quality components. G.Skill is using a 140mm fan for cooling that is able to spin down to zero at low loads to reduce noise levels. Safety features include support for over current, under voltage, and short circuit protection among others (OVP, UVP, OCP, OPP, SCP, OTP). Beyond that, detailed specifications have yet to be revealed. I have reached out to G.Skill to inquire about the source or OEM of these power supplies, and will update the article if they are willing to comment at this time.

Pricing and availability are also unknown at this time. G.Skill appears to be spreading its wings this year as it branches out further into other segments of the PC market. The company even has headsets and keyboards now! Are you ready to rip into these new Ripjaws PSUs? (Figuratively, of course, unless your Allyn or Lee!)

Source: G.Skill

Computex 2015: Enermax Shows Off New Highly Efficient 550W Digital Fanless PSU

Subject: Cases and Cooling | June 4, 2015 - 10:02 PM |
Tagged: modular psu, Fanless PSU, enermax, computex 2015, computex, atx

Enermax has a new power supply on the market that is fully modular, fanless, and digital to boot. the new 550W PSU falls under the company's DigiFanless brand and looks to be perfect for enthusiasts wanting a silent PC.

The Enermax EDF550AWN is the first 550W power supply that is both fanless and supports digital monitoring and control. The 80 PLUS Platinum rated PSU is fully modular and supports both single and multiple +12V rail configurations (user-selectable, +12V1 and +12V2 are rated at 30 amps).

Enermax 550W Digital Fanless Power Supply.jpg

There are no fans here, just lots of ventilation for passive cooling. Enermax officially rates the power supply at 40°C (104°F) maximum operating temperature while delivering the full 550W ouptut power, but in talking with Maximum PC at Computex the company stated that in its testing lab they were able to maintain the maximum output at up to 50°C temperatures before the PSU needed to shut down.

The digital nature of the PSU is related to the ZDPMS (Zero Delay Power Monitoring System) technology which allows users to monitor and control the hardware using software running on the PC it is installed in. The application displays, in real time, the total output power, efficiency, temperature, and individual rail performance. Users can also input their $/KWh electricity costs into the TCO calculator to figure out how much it costs to run their PC and the CO2 footprint. Users are also able to use the ZDMS to adjust the current output and warning notification thresholds.

Enermax ZDPMS Digital Fanless PSU Monitoring and Control Software.png

Maximum PC was on site at Computex and was able to see a demonstration of the PSU monitoring software.

Enermax has included logic to shut down the power supply in the event of overheating as well as the usual fare of safety features (OCP, OVP, UVP, OPP, OTP, SCP & SIP) They even included a bracket that locks the AC cable to the back of the power supply.

From the specifications and this review from ocaholic, the 550W Digifanless PSU is a highly efficient silent PSU with some useful extras that would be perfect for a silent gaming PC, HTPC, or audio engineering PC. It is available now for around $210 from online retailers. Looking on Newegg, you can even get it for 25% off using the promo code 25YRCELEBRATE.

Source: Maximum PC

Computex 2015: Corsair Announces New RMi Series Power Supplies

Subject: Cases and Cooling | June 1, 2015 - 07:30 AM |
Tagged: RMi Series, PSU, power supply, modular psu, corsair, computex 2015, computex, 80 Plus Gold

Corsair has announced a new line of 80 PLUS Gold certified power supplies, and these fully-modular designs bring premium components and Corsair Link integration to the enthusiast PSU market.


The RMi Series power supplies feature all Japanese capacitors rated to 105 °C, and a 140mm fluid-dynamic-bearing fan with zero-RPM mode for silent operation under modest loads. The power supplies also feature all flat ribbon-style cables, carry a 7-year warranty, and will be available in 650, 750, 850, and 1000-watt versions.


Here are specifications for these new RMi power supplies from Corsair:

  • 80 PLUS Gold certified: High efficiency operation for less excess heat and lower operating costs
  • 100% all Japanese 105°C capacitors: Premium internal components ensure solid power delivery and long-term reliability
  • Zero RPM Fan Mode: Allows for virtually silent operation at low and medium loads
  • Configurable +12V rail options:  Can be run in the default multi-rail +12V mode, or toggled to single-rail operation
  • Corsair Link Digital:  Advanced desktop application lets users monitor and log fan speed, voltages and power consumption, as well as control fan speed and toggle the +12V rail from multi-rail to a single +12V rail
  • Seven year warranty: A guarantee of reliable operation that will last across several system builds

Suggested retail pricing for the RMi power supplies is as follows:

  • 650W - $129.99 MSRP
  • 750W - $139.99 MSRP
  • 850W - $159.99 MSRP
  • 1000W - $189.99 MSRP


The new RMi Series power supplies will be available immediately through Corsair’s normal retail channels.

Source: Corsair

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."

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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."

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Source: techPowerUp