When it comes to computers, the power supply is the most important component and cutting corners when purchasing a power supply
can prove fatal for your system which is why you must make sure you purchase a quality power supply from a reputable company such as Seasonic.
Seasonic is known for making the best power supplies in the PC industry and their power supplies are some of the highest quality you can buy.
Seasonic's power supply series are comprised of the Prime Ultra, Focus Plus, Focus, M12II and S12II.
The Focus Plus series consists of the Gold and Platinum product line, with the Platinum line offering
four power supplies ranging in capacity from 550W to 850W while the Gold line goes all the way up to 1000W.
Today we are reviewing the Seasonic Focus Plus SSR-750FX Gold power supply that retails for $104.99 on Amazon and comes with 10 years of warranty. The SSR-750FX is an 80+ Gold certified PSU which means that it is 90% efficient at 50% load. So in other words, at 50% load, an 80+ Gold PSU will waste 10% energy as heat which is very good. The SSR-750FX features a single +12V rail that can output enough power to feed two high-end graphics cards and still have plenty of room for overclocking your CPU.
The Focus Plus Gold line comes in a fully modular design which allows you to only use the cables you need thus helping improve case airflow and eliminating unnecessary wires and reducing clutter. Seasonic is using high-quality Japanese brand capacitors that ensure long-term reliability. Another good thing about the Focus Plus line is that it comes in a small 140mm footprint which can help in cases where space is premium.
Seasonic has equipped their Focus Plus series with a 120mm Fluid Dynamic Bearing (FDB) fan with the ability to
run in three operational stages: Fanless Mode, Silent Mode, and Cooling Mode.
The fan in the power supply turns off for silent operation during idle or low powered activities if the loading condition is below 30%.
Seasonic has also included a switch at the back of the power supply which allows users to customize their cooling needs by selecting
between the Seasonic S2FC (fan control without Fanless Mode) and the S3FC (fan control including Fanless Mode).
This is a high quality fan that is extremely reliable and generates considerably less operating noise and heat than ball bearing fans.
The Seasonic Focus Plus series includes ±3% tight voltage regulation which helps significantly with stability. In other words, think of voltage regulation this way. When your computer is running, the current power draw can suddenly change for your CPU or GPU load. When this happens, the less change in voltage, the better thus resulting in better stability for your computer. Cheap power supplies don't do this very well, and can often damage the components of your computer so be very careful when purchasing some random power supply you find on websites such as Amazon and Newegg.
Most of the really good PSUs out there are rated for 50°C operating temperature but the majority of them
are generally rated for 40°C. This is a pretty difficult standard to meet and Seasonic has achieved that with the Focus Plus series and
the SSR-750FX comes with a 50°C operating temperature.
Seasonic has also implemented a cable-free connection design solution where instead of cables, the back panel and the PCB
are connected by a copper plate. This lowers the chance of production errors during manual insertion and also
improves power efficiency.
There are only a few companies that provide 10 year warranties for their power supplies and Seasonic is one of them. The majority of the manufactures offer 5 year warranties so this shows Seasonic's commitment to their PSU quality and longevity. At the time of writing this review, you can find the SSR-750FX for $105 on Amazon and Newegg which makes it about $5 cheaper compared to other 750W Gold PSUs from other reputable manufactures. This is good for everyone because consumers get good quality PSUs for a good price and Seasonic generates tons of sales buzz thus creating positive word of mouth about their PSUs.
|Seasonic SSR-750FX Specifications|
|Max. DC Output:||750W|
|Over Voltage Protection:||Yes|
|Form Factor:||Intel ATX 12 V|
|Dimensions:||140 mm (W) x 150 mm (L) x 86 mm (H)|
|Fan Size:||120 mm|
|Fan Control:||Premium Hybrid Fan Control|
|Fan Bearing:||Fluid Dynamic Bearing|
|Life Expectancy:||50,000 hours at 40 °C, 15 % - 65 % RH|
|Cable type:||Flat black cables|
|Operating Temperature:||0 - 50 °C|
|MTBF @ 25 °C, excl. fan:||100,000 hours|
|AC Input:||Full Range|
|Protection:||OPP, OVP, UVP, OCP, OTP, SCP|
|Safety and EMC:||cTUVus, TUV, CB, CCC, BSMI, EAC|
|Environmental Compliance:||Energy Star, RoHS, WEEE, ErP Lot 6, REACH|
|Voltage:||100 V - 240 V|
|Current:||10 - 5 A|
|Frequency:||50 Hz - 60 Hz|
|Rail||+3.3V||+5V||+12V||-12 V||+5 VSB|
|Max.(Amps):||20 A||20 A||62 A||0.3 A||3 A|
|Max.(Power):||100 W||744 W||3.6 W||15 W|
|Total Continuous Power:||750 W|
|PCI-Express Connector:||4 x 6+2-Pin|
|SATA Power Connector:||8|
|Connectors:||1 x ATX connector 20+4 pin (610mm)|
2 x 4/8 Pin CPU (650mm)
4 x 6+2 pin PCIe (675mm+75mm)
8 x SATA (450mm+120mm+120mm+120mm)
3 x Peripheral (450mm+120mm+120mm)
1 x FDD (110mm)
The SSR-750FX comes in a simple but elegant box that stands out when you first see it due to the bright yellow color. Looking at the front of the box, we see the Seasonic logo on the top left corner followed by the 'Focus+ Gold' text in the center and '750FX' model number in the bottom right corner. On the back, you will see a list of the SSR-750FX's features such as the 80Plus Gold rating, DC to DC converter design, +12V output, tight voltage regulation, reliable aluminum solid capacitors, 120mm FDB fan, compact design, fully modular cabling, and a 10-year warranty. Size-wise, the SSR-750FX is 140mm wide, 86mm tall and 150mm long and weighs 6.80 lbs.
Seasonic's packaging is top notch and I've never seen a company take packaging this seriously.
We can see that the SSR-750FX is protected by two high density foams as shock absorbent to prevent any accidental damages during shipping.
The power supply is enclosed inside a cloth bag that definitely gives it a premium feel to it.
Most manufactures package their power supplies in plastic bags so it's nice to see Seasonic go the extra mile with their packaging.
There's a void sticker on one of the corners of the PSU and tampering with the PSU of course voids the warranty.
Inside the box you will find a set of Velcro straps, four mounting screws, several zip ties, Focus case badge, an AC power cord, a user's manual and a bundle of modular cables in a separate cloth bag. The manual has all the information you need to know about the power supply such as how to set up your power supply and basic troubleshooting.
The cables are of ample length and you can look at the table above for connector count and for cable lengths. The only thing that I don't like about the cables is that Seasonic has added capacitors to some of the cables (ATX, EPS, PCIe) for extra ripple filtering. Adding capacitors to these cables has made them quite bulky which makes the cables difficult to fold and route around the case but the peripheral cables don't have capacitors in them so they are flat. Flat cables have much greater flexibility to allow for tighter folding and management of cables.
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