Appearance and Specifications

Our review sample came without retail packaging, so we'll jump straight to the design and appearance. Above is the R90, with large rectangular cutouts for the rear ventilation. That's a standard HuntKey trait, as opposed to the hexagon/honeycomb ventilation used on many other PSUs. The R90 has a matte black finish, transparent fan blades, and cable sleeving that could easily be mistaken for something from Enermax. It's a decent looking, understated design and the case is only 14cm long.

Given the 80 Plus Gold certification, the use of DC-to-RC VRMs should be too surprising, but it's not something we typically see in the 300W market. Most of the power comes on the two +12V rails and we tested OCP at room temperature. OCP kicked in at 28A, which is definitely more than you'd normally get from a 300W PSU. However, the smaller rails can deliver up to around 100W for peripheral hardware and HDDs/SSDs; that means in typical PCs you'll have less than 28A on the +12V rail to work with (like all DC-to-DC PSUs).

That should still be sufficient for running a moderate midrange or lower GPU. HuntKey informs us that up to a single GeForce GTX 260 or 460 (and maybe even a 560 Ti if your CPU isn't too extreme) should work; on the AMD side, that equates to a single Radeon HD 5850 or 6950 or lower (and you might even manage a 6970 if your CPU isn't too demanding). Then again, erring on the side of caution might not be a bad idea, in which case the HD 6850 and GTS 450 would be a more reasonable limit.

The Jumper 300G has a slightly different appearance. Gone is the matte black exterior, replaced by a shiny silver casing. The cable sleeving is also missing, and the fan grille is different. Internally, the units are the same, but the American market will be getting this rather vanilla looking version.

HuntKey 300W with 80 Plus Gold Cables and Connectors
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  • JasperJanssen - Monday, March 14, 2011 - link

    Comparing to other high quality, low wattage, lowfeatured units, $80 seems way over the top. If it goes over $60 they'll be lucky to sell a single unit. Reply
  • JasperJanssen - Monday, March 14, 2011 - link

    I just checked my local pricewatch, there's a Jumper 550 in there for 60 euro (which contrary to popular belief means 60 dollars, despite the exchange rate). The 550 is a different animal, it has hex grates on the end, but companies generally don't price the 300W low end model above the 550W near-top-end model in a given (Jumper) product range. Reply
  • AnnihilatorX - Saturday, March 05, 2011 - link

    In specification page, the sticker photo shows a logo which looks like battery level
    It reads, very high safety margin - can continuously and stabily output 400W

    Then why don't they just brand this as 350W?

    Something to do with 80Plus certification regarding efficiency at certain load levels?
    Reply
  • Concillian - Saturday, March 05, 2011 - link

    "Something to do with 80Plus certification regarding efficiency at certain load levels?"

    Indeed, check the efficiency chart and 110% load shows 86% efficiency.
    80+ gold certification requires 87% @ 100% load.

    If it were rated at 330W, they'd have to back it down to 80+ silver.
    Reply
  • Martin Kaffei - Sunday, March 06, 2011 - link

    Correct. 400W e.g. is the rated power for room temperature and 80Plus Bronze.
    The power and efficiency is always temperature-dependent.
    Reply
  • WintersEdge - Monday, March 07, 2011 - link

    When and where do you guys think this will be available for purchase? This is definitely the front-runner on my PSU shortlist for my upcoming sandybridge build. I was going to go for the SS X400 but 400W is overkill considering I plan to use the IGP, and it's also quite expensive.

    And what is up with those other PSU units cited at the very beginning of this review?? How come I can't find them for sale?? I looked up the FSP Group 250W model:
    http://www.fsp-group.com/english/1_product/2_detai...

    It looks uglier than butt-ugly, but I still wouldn't mind buying it if it was available somewhere... What's up with that?
    Reply
  • bobbozzo - Monday, March 07, 2011 - link

    s/Season/Seasonic/ Reply
  • 7Enigma - Monday, March 07, 2011 - link

    Thanks for the great review Martin.

    This is exactly the kind of PSU most of us want. I'd personally like a 400w unit of the same quality for <$130 since I run a high-end video card, but for everything else this 300w unit is just about perfect. It is a bummer about the American version not having the sleeving and black paint job, but it's still a great PSU!
    Reply
  • Martin Kaffei - Monday, March 07, 2011 - link

    I'm glad that you like the review.

    Maybe HuntKey will add sleeving for the final edition and has found a distributor in the USA. I've just heard they start to ship this PSU to France now. For about 60-65 €uro. Hope we get more informations soon.
    Reply
  • iamkyle - Tuesday, March 08, 2011 - link

    AT!!! Seriously - we need bar graphs like the other articles so we can COMPARE the efficiency of the PSU's you review! Reply

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