EVGA BQ Series 850W PSU Review

Pros, Cons, And Final Verdict

We can't say the 850 BQ managed to impress us. Although it registers a fairly high performance per dollar score thanks to its affordable price, the unit's absolute performance isn't up to the levels we want to see. Load regulation is very loose, ripple suppression on the minor rails is mediocre, and the 3.3V rail's transient response is weak. To make matters worse, the efficiency levels are quite low, the inrush current under both voltage inputs (115V and 230V) is high, and the cooling fan is loud, even though it uses a reliable bearing. In order to keep the Teapo SC capacitors on the secondary side cool (along with the SBRs responsible for rectifying the +12V rail), HEC went with an aggressive fan profile that sets the minimum rotational speed at 1120 RPM! So, if you hate noisy PSUs, stay away from this one.

On the bright side, the 850 BQ offers a decent hold-up time and its power-good signal is accurate. The +12V rail's response to transient loads is pretty good for this price category, and you get a respectable number of connectors, allowing you to configure a potent system without any problems.

For $85, you get a 850W semi-modular power supply with lots of connectivity and a five-year warranty, so we probably shouldn't be super picky. But for a few dollars more you can find some nice Gold-rated PSUs capable of much higher efficiency. Besides cutting your electricity bill, they'll also run more quietly since their fans don't have to cope with as much waste heat.

Let's face it, 80 PLUS Bronze PSUs are living their last days. It's actually pretty hard to find new (and worthwhile) offerings in this category; Gold-class PSUs are more affordable than they used to be, after all. If the price difference was $20 or more, it'd probably be worth considering the best Bronze-rated models. But EVGA's 80 PLUS Gold 850 GQ sells for around $100. That's close to a $10 gap. So, we think the higher-efficiency PSU is a better buy.

The list of upgrades to the 850 BQ should include higher-quality caps on the secondary side, better ripple suppression on the minor rails, tighter load regulation, and a more conservative fan profile. However, with the help of our IR camera, we noticed that the +12V regulation SBRs can get quite hot in a matter of seconds, even under moderate loads (and the PSU operating in passive mode). This means extra work for the fan. Since HEC wanted to be on the safe side rather than dealing with warranty returns, it armed this unit with a reliable fan that'll spin quickly for most of its lifetime. No doubt, the company went with a TNB fan over a plain sleeve bearing one to make its five-year guarantee viable.

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25 comments
    Your comment
  • joz
    At $85 I can get a G2 650W; or even a G2750W on sale.
  • Metteec
    Thanks for the review. Looks like I will be avoiding this one.
  • Metteec
    Also, for $20 more, you can pick up an equivalent gold rated PSU or maybe even a platinum one on sale and after rebates. It is the halcyon days for competition in quality PSUs.
  • _TheD0ct0r_
    1547864 said:
    Thanks for the review. Looks like I will be avoiding this one.


    Why is that?
  • Metteec
    @_THEDICTOR_, for $85, there are so many other better options. EVGA could have been more competitive model if they made quieter version. Instead, you get a PSU with fixed cables, low efficiency, high power variances, and noise like a mini-vacuum. While the higher quality capacitors and warranty are nice, the lack of utility does not make this a good value. 3-years ago, this would have been a great PSU, but times have changed. It is a great day to buy a PSU, just not this one.
  • MasterMace
    appears to be another terrible unit. I'll have to read back and see if it's an Andyson or a HEC
  • Dark Lord of Tech
    Considering the OEM is HEC , not surprised by this review.
  • Nuckles_56
    I would have thought that EVGA could have pushed HEC a bit harder and got a much better unit out of them than this
  • lunyone
    I would personally like to see more 450-550w PSU reviews, not the cherry picked and delivered 750w+ ones that seem to make the rounds. It is just that most people are only going to need 450-550w PSU's for their 1 dGPU based systems.
  • Aris_Mp
    This is not a cherry-picked sample. It comes directly from a store shelf and not from EVGA.

    As for more 450-550W PSU reviews, I am currently working on a 500W unit (which however isn't affordable).
  • logainofhades
    Given the fact that a B2 850 is selling for a couple dollars less, there is no reason to even think about this BQ.
  • lunyone
    1903369 said:
    This is not a cherry-picked sample. It comes directly from a store shelf and not from EVGA. As for more 450-550W PSU reviews, I am currently working on a 500W unit (which however isn't affordable).


    So is all of your reviews come from a retail purchase, or are there some delivered from whichever vendor? Just curious, because I remember reading not too long ago that pretty much all of the products had been items that were submitted from whichever vendor. So I'm guessing that 90-95% of reviews come from vendor delivered samples or am I wrong in that assumption? I'm just curious and not trying to be a troll or anything like that. I think it would be beneficial if the viewer knew whether or not the sample was purchased or offered/delivered from said vendor.
  • Dark Lord of Tech
    The samples come direct from the Manufacturer.
  • lunyone
    276663 said:
    The samples come direct from the Manufacturer.


    Yes I understand that. Aris_MP stated that it came from the Store shelf, so I was trying to get an idea on how many items have been purchased from a Store shelf compared to the ones that the Manufacturer delivers to the reviewer.
  • Dark Lord of Tech
    Most of the time , with most reviews they aren't off the shelf , this is rare , they are sampled direct.
  • Aris_Mp
    Like in almost all product reviews, PSU samples come directly from the manufacturer, which also provides support in case the product breaks down (something that is very easy to happen in a PSU review). Besides a huge budget buying the products from a store would also mean no support in case the PSU dies, since its warranty is voided the moment I set it on my test bench.
  • lunyone
    1903369 said:
    Like in almost all product reviews, PSU samples come directly from the manufacturer, which also provides support in case the product breaks down (something that is very easy to happen in a PSU review). Besides a huge budget buying the products from a store would also mean no support in case the PSU dies, since its warranty is voided the moment I set it on my test bench.


    So the units that you get from the Manufacturer could be cherry picked, even though they still cover any/all issues during the review, which is the point that I was trying to make about getting units that aren't always indicative of what a consumer would experience from buying the product. Not saying this is bad, just pointing it out.
  • Aris_Mp
    yes they could. But this doesn't mean that every manufacturer does that. Even if you buy samples there is always the possibility for changes in the manufacturing line and the next batch to be worse (or better). So you never know.

    Personally I rely on my experience, knowledge and connections to find out not-proper (AKA Golden) samples. There are times that even my readers provide useful tips. E.g. when they do notice a different part in their PSU and report it. This is why I fully break apart every PSU (and all the rest samples in the sites I work for) during a review, a procedure that takes many hours and can be quite hard some times (for instance when you have to fight with Enhance Electronics' huge heatsinks).
  • lunyone
    Oh I understand your troubles that you have to go through. I think it would be more fair, if the manufacturer would allow you to purchase their product from a retail store of your choice and offer the same support throughout your review period. Of coarse re-reimburse you for the cost of the purchase price. This would show the viewer/reader what kind of experience/product that one would expect if they went out and bought said product. I know it isn't going to happen that way, but I feel that would be the best of both worlds. You (the reviewer) would get the support you need from the manufacturer and the viewer/reader would know that the reviewer had purchased the product locally (if possible) and this would reflect a more realistic review of a retail sample.
  • madmatt30
    I don't get it at all.
    While not an inherently bad unit it just seems completely pointless really.
    The fsp made gq850 is just better & its the same price.
    I can understand evga using hec for the budget orientated b1 series but not 850w modular units that are aimed at higher end users.
  • logainofhades
    1031363 said:
    I don't get it at all. While not an inherently bad unit it just seems completely pointless really. The fsp made gq850 is just better & its the same price. I can understand evga using hec for the budget orientated b1 series but not 850w modular units that are aimed at higher end users.


    Yea, when they already had the superflower built B2.
  • Marcus52
    I don't know why EVGA would even consider offering this kind of product. They're supposed to stand for quality, not cheap.
  • Nuckles_56
    59887 said:
    1031363 said:
    I don't get it at all. While not an inherently bad unit it just seems completely pointless really. The fsp made gq850 is just better & its the same price. I can understand evga using hec for the budget orientated b1 series but not 850w modular units that are aimed at higher end users.
    Yea, when they already had the superflower built B2.

    Probably because they are about to discontinue to SF built B2 in favor of this unit
  • logainofhades
    Which would be a horrible idea, as the SF built unit is a far better.