Reviews - Corsair HX1050 1050W
Sample Provided by: Corsair (By OklahomaWolf on Sat, Jul-02-2011)

Page 1 - First Look

Good day, fellow power supply enthusiasts. Today I'm reviewing the latest beast to come out bearing the Corsair name, the HX1050. An 80 Plus Silver unit with a seven year warranty intended to replace the aging HX1000 platform, this particular unit is one that has been long awaited indeed.

You know, it was back in May of 2008 when I looked at the old HX1000. Based on the CWT PUC platform, it turned out to be an exceptional performer indeed. I can't wait to see if this unit's kept that performance, now that Corsair's lineup has expanded to even more high end stuff like the AX1200. I mean, does it really make sense to have the HX series perform as well as the AX series? I'm thinking not really. What incentive would there be to buy the higher end model, then?

Enough speculation. Let's all take a minute or eight to look at the box for a while.

And yes, we do have some marketing to talk about, along with some efficiency and fan curve graphs. Not to mention the connector graphics at the top of this shot and the load table at the bottom.

Easy-to-configure single-rail architecture and semi-modular cable set
The single 87 Amp +12V rail simplifies your setup and gives you maximum compatibility in dual- and triple-graphics cards configurations. Combined with the semi-modular design, this makes building or upgrading your PC fast and easy, using only the cables you need.
-Here we go again. How does single 12V simplify anything vs. multirail, exactly? I've said it over and over and over and over and over again that if the engineers did good, you don't have to worry about where you jack stuff into that multirail unit.

Certified 80PLUS Silver efficiency and low-noise thermally controlled fan
With up to 88% energy-efficiency, the HX1050 produces less waste heat and noise, and can even help reduces your energy, The thermally-controlled double ball-bearing fan runs at minimum speed at low loads, so your PC runs quieter.
-"Can even help reduces your energy", eh? Who proof read this blurb, Gollum? "We checks your spellings, we swears! We swears it on the precious!"

Corsair engineering, Corsair quality and backed by a 7-year warranty
Built using only high quality Japanese capacitors, a custom-designed PCB, and premium, industrial-grade components, the HX1050 delivers clean, stable power with very low electrical ripple and noise, ensuring high reliability and a long operating life.
-Only those two things, eh? I would have thought that some sort of housing for these capacitors and components would be included too.

Looks like the marketing continues here.

Carefully engineered and built with premium-quality components, the HX1050 exceeds the ATX voltage specification by more than 40%, for stable, reliable power that protects your PC and peripherals.
-Interesting. ATX spec for the three main rails is 5%. This means that we should expect to see 2% or better regulation. T'will be interesting to see if that's the case, t'will. T'will also be interesting to find out if Shania Twain twiddles her twine twixt the twirling twisters as they twitch and twiddle in the twilight.

By converting 3.3V and 5V from a single 12V source, rather than the more traditional AC-to-DC method, the HX1050 delivers up to 88% efficiency, lowering energy consumption and generating less heat and noise.
-"AC-to-DC" eh? Now the proof readers have a stutter. Seriously, two hyphens and the word "to?" That's like saying "AC to to to DC." Oh, I'm a nitpicker now, am I? Well... there's a pin size stain on your shirt. So there.

The modular design gives you the flexibility to connect only the peripherals you need, reducing cable clutter and improving airflow through your PC case for better system cooling.

Let me guess - there's more marketing to type out. I'd best get going, then.

  • Auto-switching circuitry accepts universal AC input from 90V-264V
  • Supports ATX12V 2.31 and EPS12V 2.91 standards and is backward compatible with ATX12V and 2.2/2.01 systems
  • Dimensions: 150mm x 86mm x 180mm

Well, I guess it's not so much marketing as it is the standard "this is what our power supply supports" type stuff. Although, the first bullet point could be considered marketing, due to the auto switching stuff being a byproduct of the active power factor correction circuitry.

Time to crack the box open and unpack.

As is the norm for Corsair, a few extra goodies come with the unit itself. A velvet PSU bag, a bag of modular cables, some zip ties, a case badge, some screws, and a manual.

Here's the manual. Unless I missed it, I found the operating temp spec for this unit neither in here nor on the box. Never fear, though, the Corsair website does. Fifty degrees.

Here's the power supply itself, apparently designed by someone who was really hungry that day. The fan side of this thing looks like my grille upstairs. I could go for a burger right about now. Wonder if this thing gets hot enough to cook one. Coming to an infomercial near you - the George Foreman power supply.

On second thought, I'd rather have a rib steak.

With some delectable waffle fries and a Coke. And for dessert...

Oh, right. I'm supposed to be reviewing a power supply. Here's the exhaust grille for you. You know what? Never mind that. Let's go down to the Sunset Grill. We can watch the working girls go by. Keep my mind on the review, you say? Oh, all right.

The side panel of the unit even has a few grill like protrusions on it. How am I not supposed to think about food? Hang on, I'm going to turn on Man vs. Food. That should put me off food for a while.

Ah, that's much better. Shudder... five pound burritos. I don't even like one pound burritos.

Looks like Corsair's trying to put one over on me, up there. The screws to get inside the unit are Allen headed. Nice try, guys, but I'm still getting it apart. I'm an electronics tech - I have screwdriver bits I don't even know the names of.

Here be the load table. As you can see, Corsair claims an 87.5A 12V rail for this puppy, which amounts to the entire capacity of the unit. Once more, I'll say it: purple blasting mushrooms. I said that to a very confused looking dog this morning.

But I'll say this again, too: 87.5A 12V rails are too much for single rail topology in my not so humble opinion. You're talking about almost enough current there to arc weld with. Think the unit will shut down if a transistor on the video card flames out? It may. It may not. I've seen single 12V units far smaller than this smoke hard drives due to bad connectors. They just don't see a partial short as a reason to shut down because the protection circuitry is too de-tuned in order to allow the high current flow. Therefore, you have to be careful running a single 12V unit this big. Make sure all connectors are in good shape, plugged in firmly and properly, and that there are no chances of short circuits anywhere.

Corsair HX1050

+3.3V +5V +12V -12V +5VSB
30A 30A 87.5A 0.8A 3.5A
Max Power
@ 50°C
180W 1050W 9.6W 17.5W

A good look at the modular connectors is warranted, I think. In blue, we have the PCI-E and CPU cable connectors. The black ones are for peripheral cables.

The modular cables themselves. The peripheral cables are the flat ribbon cable type ones, while the others are sleeved.

Each modular cable comes with a printed warning to use them only with TX or HX series units.

Finally, here are the hardwired cables. I have no problem with the cable count here, for those needing a unit this size these days will also likely need more than just one PCI-E cable.

Type of connector: Corsair HX1050
ATX connector (600mm) 20+4 pin
4+4 pin EPS12V/ATX12V connector (600mm) 1
6+2 pin PCIe (600mm) 2
Modular Cables
4+4 pin EPS12V/ATX12V connector (595mm) 1
6+2 pin PCIe (595mm) 4
5.25" Drive (400mm+150mm+150mm+150mm) 12
5.25" Drive to 3.5" Drive (100mm) 2
SATA (400mm+150mm+150mm+150mm) 12
Unit Dimensions (L x W x H)
180mm x 150mm x 86mm


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