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


View All Comments

  • Sabresiberian - Tuesday, March 8, 2011 - link

    Why can't Anandtech ever run PSUs that normal people use? No one cares about these low-power pieces of junk!

    /end sarcasm

    (To those who don't get it, this is a jab at all those posters who whine and cry when Anandtech runs articles on high-powered PSUs and make the same kind of comment. Anyone who has read more than one PSU article on Anandtech knows they do high quality reviews of PSUs that are across the board in power rating and usefulness to people who buy them, or just want to know more about them. Hats off and /bow to Martin for once again giving us something interesting and informative.)

  • MrSpadge - Tuesday, March 8, 2011 - link

    Would be nice to see efficiency measured for us European / Australian / whatever people as well. I know at ~220 V efficiency should be 1 - 2% higher, but it's still nice to see the actual measurement.

  • Tinhead - Wednesday, March 9, 2011 - link

    Last 9months i have heard more and more friends with PSU problems.
    Most of their PSU's are about 2-5years old and they either die on some "rails" or completely.
    Most of them has been used for servers, on 24/7 etc..

    One thing im wondering about is how long should we expect to get a PSU to run?
    Can we expect 24/7 for 5years or 2years?
    The parameter is not that popular since it is hard to test, the users that are driving the enhancements are considered mostly to be gamers, and they like power and efficiency more then MBTF.

    Another factor is how does the PSU preform with under or over voltage?
    And ofc how it handles spikes, and other "dirt" in the wires. Which is more common then most users know.
    (one reason why i use a UPS to my equipment.)

    Also it would be interesting if you can test with 220V AC since that is a common standard and it does affect the performance and operation of the PSU.
  • Martin Kaffei - Wednesday, March 9, 2011 - link

    I know what you mean. AC stress is a problem as well as a good way to test power supplies. In fact it is usually easier for a PSU to handle DC loads than transients. Nevertheless it is indispensable to have an AC source with a clean output for better comparability in all tests. Later that year, I hope the AC side gets more attention after adding some components.

    24/7 ist basically no problem for a PSU but the lifetime depends on many factors. capacitor aging is a problem, EMI immission is, temperatures are. In my opinion servers should get other PSUs than usual PCs. The letter will usually be changed after 2 or 3 years, so voltage/ripple/EMI during a relative short time is more important than endurance (which includes "long life" capacitors). Some older PSUs died in my PCs after a year or two, but I'm sure the quality is better today if you buy known brands. Specially brands who have to make sure, that the PSU works 5 years because of their warranty program. But that's no guarantee for all products. We aren't able to make long time tests over a year, even manufacturers can't do that. Their "long time" tests take a week and the rest is just math.
  • HangFire - Wednesday, March 16, 2011 - link

    >One thing im wondering about is how long should we expect to get a PSU to run?

    The capacitors define the lifetime of a quality power supply. They are rated for a certain number of years at a given temp. Typical numbers are 3 and 5 years as you go up the price ladder. Unless there is a bad batch (it happens), quality Japanese capacitors can be counted on to last their rated lifetime.

    For very low end PSU's (and there are a lot of them out there), besides the capacitors it is components being run over-spec that will define the lifetime (burn out first). For example a 400W rated power supply made up of 250W level components will have one life expectancy at 150W and another at 250W. You can read some recent reviews of such power supplies over on Hardware Secrets.

    The warranty is supposed to give you some idea of what to expect, but not really. Seasonic's lowest end series have a 1 year warranty but you can expect them to be useful much longer. Diablotek offers 3 years on some of theirs, but recent published reviews cast doubt on their lifetime if used at their rated capacity.
  • Onus - Friday, March 11, 2011 - link

    After seeing Gabriel blow up many overrated Huntkey pieces of dung, I'm leery of the brand, but this is the sort of PSU I'd like to see more often. I've built a couple of project PCs to test various ideas, and a PSU like this would be perfect for a mini-ITX gamer, running a HD5770 or GTX460. I'd be worried about ventilation with a fanless PSU in that application, but this would be good. Hopefully they'll do a modular version.

    The reason GPU manufacturers list outrageously high minimum wattages is they are trying to account for all the Chokemax PSUs out there that can barely manage 60% of what's on their labels.

    With the 80+ Bronze EA-380D at $45, this can't cost any more than $60 if Huntkey expects it to sell. In this wattage range, an efficiency difference of even 10% doesn't amount to all that much.

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