FSP Hydro G 650 Power Supply Review

Pros, Cons And Final Verdict

Enthusiasts will undoubtedly find this new FSP platform interesting since it offers good overall performance, including tight load regulation on the +12V rail and good ripple suppression on all of the rails. On top of that, it is efficient and with 115V input we measured a nearly 88 percent overall efficiency score. 

Every Hydro G model comes equipped with the most efficient 5VSB rail we've ever seen on a desktop PSU. On top of that, it is very rare to see 3.5A max current output at 5VSB, even in units with over 1kW capacity. Unfortunately, in most cases, power supply manufacturers don't really care about 5VSB, so they use outdated circuits. A characteristic example is Super Flower's celebrated Leadex platform. Despite its popularity, the design has a weak and inefficient 5VSB rail, even as the rest of the design is cutting-edge. We don't know why manufacturers like Super Flower disregard this rail, but FSP sets the example of how to treat 5VSB right.

Besides looking nice and including changeable side stickers, the Hydro G 650 also features modular cabling with high-quality cables and semi-passive operation under light loads. The finish could be better though; we simply don't like glossy finishes because they attract fingerprints and are prone to scratching. It would have been nice for FSP to use a matte finish instead, which is more resistant to fingerprints and scratches.

Again, this PSU's overall performance is excellent, losing only to EVGA's 650 G2, which costs more. So, in the highly important performance per dollar chart, the Hydro G 650 easily takes the lead. FSP sells its Hydro G PSUs at very good prices, and that's going to help move them off of store shelves.

It is always nice to see new additions to the PSU market. Choice is often limited since two or three OEMs dominate the field. As a result, most models are based on the same platforms. We expect FSP to widen its Hydro G line with more PSUs, covering a wider wattage range. In addition, the company should also take a look at the low hold-up time of its power-good signal, which can be tuned to satisfy the ATX specification's requirements. In addition, we would like to see tighter load regulation at 3.3V, although this rail is only lightly used in modern systems.

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Aris Mpitziopoulos is a Contributing Editor for Tom's Hardware, covering Power Supplies.

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14 comments
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  • Onus
    I see a Performance Per Dollar chart, but so far I've not been able to find the price of this unit. What is it?
  • sammy sung
    Hopefully a competitive price scheme. Looks awesome though, very nice aesthetic
  • Aris_Mp
    Quote:
    I see a Performance Per Dollar chart, but so far I've not been able to find the price of this unit. What is it?


    It is 90 bucks

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817104200&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-VigLink2-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3821802&SID=il40akd6as0035wt00053
  • mrjhh
    I remember FSP being an OEM for older computer vendors like DEC, so they definitely aren't a newcomer to the field. I'm glad to see they know how to build a modern supply.
  • Onus
    IMHO FSP has always had a solid but "middle-of-the-pack" reputation; not anybody's first choice, but a lot better than a lot of the junk being sold. Even their Raider units that got very critical reviews were acceptable as budget units in light use. In big box PCs, I'd certainly rather see FSP than HEC or Bestec.
  • jeffunit
    I see "op amp amplifier" mentioned several times in the review.
    What is an "op amp amplifier"
    Doesn't amp stand for amplifier in this context, which expands to op amplifier amplifier?
  • anort3
    Odd naming scheme for a power supply. Hope it doesn't confuse anyone into thinking water goes well with it. :P

    Always good to see some of the larger if less well known manufacturers putting out quality units.
  • Aris_Mp
    Quote:
    What is an "op amp amplifier"


    short for operational amplifier
  • jeffunit
    Quote:
    Quote:
    What is an "op amp amplifier"
    short for operational amplifier


    op amp is short for operational amplifier.
    op amp amplifier is short for operational amplifier amplifier.
    You need to pay more attention to what is written.
  • turkey3_scratch
    Good performing power supply. In terms of voltages and ripple, beats the EVGA GS. I would never hesitate to recommend this unit, if it is priced well of course, which it already is not.
  • lunyone
    Had this been around $60 or so, it would be on my recommendation list. But at ~$90 I'm not as inclined to recommend it. Yes it is a good unit, but $90 just seems a bit steep for a 650w PSU. I'm more inclined to buy a $60-70 PSU for most of the builds that I do (all at least 80 PLUS Bronze rated). I know that this PSU is probably for those that have extra $ floating around or want more than just 80 PLUS Bronze certified PSU's.
  • sammy sung
    The GQ series seems hard to overturn, unless fully modular cabling is an absolute must for the consumer. I've never had an issue with semi-modular that made me cringe and exclaim that I should have forked out the extra $10-20. Aesthetics are more of a deciding factor for me, and realistically this edges out the HX series for that blue/white scheme, as far as I'm concerned at least.
  • Archaic59
    It's nice to have another unit to add to the short list of power supplies worth recommending. I'd like to see a 550 watt unit added to this line.
  • turkey3_scratch
    It runs for $81 now:

    PCPartPicker part list / Price breakdown by merchant

    Power Supply: FSP Group Hydro G 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($81.50 @ Newegg)
    Total: $81.50
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2016-03-05 21:53 EST-0500

    Which is comparable to the EVGA GS:

    PCPartPicker part list / Price breakdown by merchant

    Power Supply: EVGA SuperNOVA GS 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($79.99 @ Amazon)
    Total: $79.99
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2016-03-05 21:54 EST-0500

    Between the two, I'd take the FSP. I think I'm going to start making this FSP a common recommendation myself.