EVGA BQ Series 850W PSU Review
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Page 1:EVGA 850 BQ Power Supply
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Page 2:Packaging, Contents, Exterior, And Cabling
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Page 3:A Look Inside And Component Analysis
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Page 4:Load Regulation, Hold-Up Time, And Inrush Current
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Page 5:Efficiency, Temperature, And Noise
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Page 6:Protection Features, Evaluated
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Page 7:Cross-Load Tests And Infrared Images
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Page 8:Transient Response Tests
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Page 9:Ripple Measurements
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Page 10:Performance, Performance Per Dollar, Noise, And Efficiency Ratings
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Page 11:Pros, Cons, And Final Verdict
Performance, Performance Per Dollar, Noise, And Efficiency Ratings
Performance Rating
The following graph illustrates the 850 BQ's total performance rating, comparing it to other units we have reviewed. To be more specific, the tested unit is shown as 100 percent, and every other unit's performance is shown relative to it.
EVGA's overall relative score is pretty low, mostly because of loose load regulation and increased ripple on the minor rails, along with the 3.3V rail's poor response to transient loads.
Performance Per Dollar
The following chart may be the most interesting to many of you because it depicts the unit's performance-per-dollar score. We looked up the current price of each PSU on popular online shops and used those prices and all relative performance numbers to calculate the index. If the specific power supply wasn't available in the United States, we searched for it in popular European Union shops, converting the listed price to USD (without VAT). Note that all of the numbers in the following graph are normalized by the rated power of each PSU.
EVGA's asking price is pretty affordable, so the 850 BQ's performance per dollar score is only a little lower than the CX750M's.
Noise Rating
The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 28°C and 30°C (82°F to 86°F).
The 850 BQ is noisy, no doubt about it. This is a great shame because, with a lower minimum fan speed, it could be much quieter.
Efficiency Rating
The following graph shows the PSU's average efficiency throughout its operating range, with an ambient temperature between 28°C and 30°C.
Efficiency lands in the 80 PLUS Bronze region, unsurprisingly. If you need higher efficiency, then you have no other option but to invest in a Gold-rated unit. Of course, that's going to cost more, too.
- EVGA 850 BQ Power Supply
- Packaging, Contents, Exterior, And Cabling
- A Look Inside And Component Analysis
- Load Regulation, Hold-Up Time, And Inrush Current
- Efficiency, Temperature, And Noise
- Protection Features, Evaluated
- Cross-Load Tests And Infrared Images
- Transient Response Tests
- Ripple Measurements
- Performance, Performance Per Dollar, Noise, And Efficiency Ratings
- Pros, Cons, And Final Verdict
Why is that?
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.
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.
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.
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).
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