|Item model number||SSR-650FM|
|Item Weight||5.84 pounds|
|Product Dimensions||5.91 x 5.51 x 3.39 inches|
|Item Dimensions L x W x H||5.91 x 5.51 x 3.39 inches|
|Color||Gold Semi Modular FM|
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Seasonic FOCUS 650 Gold SSR-650FM 650W 80+ Gold ATX12V & EPS12V Semi-Modular 7 Year Warranty Compact 140 mm Size Power Supply
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- COMPACT SIZE - 140 MM DEEP; High power output to size ratio.
- SEMI-MODULAR; The semi-modular cabling design provides the most common connections while allowing flexibility on the peripherals.
- 80 PLUS GOLD; 87% efficient at 20% load, 90% efficient at 50% load, and 87% efficient at 100% load.
- 120 mm FLUID DYNAMIC BEARING FAN; The 120 mm FDB fan inside is regulated by the Seasonic S2FC fan control, which optimizes the fan speed according to the needs of the system.
- 7 YEAR WARRANTY; Our commitment to superior quality.
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The FOCUS Gold power supplies are the ideal choice for people who do not want to break the bank, and yet seek the solid power supplies with great reliability and efficiency. The semi-modular cabling design provides the most basic connections while allowing flexibility on the peripherals. The high quality 120 mm Fluid Dynamic Bearing (FDB) fans are very quiet and proven to be very stable over the long run. The 120 mm FDB fan inside is regulated by the Seasonic S2FC fan control, which optimizes the fan speed according to the needs of the system.
This power supply is only compatible with cables provided by Seasonic. Any other cables not approved by Seasonic will result in item malfunction.
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First off, its a beautiful power supply, this PSU has a thick applied powder coat of matte black paint, that will not scratch. It has a professional, non-flashy finish, that will blend beautifully into whatever build you decide to install this PSU into.
This product is fully modular, allowing the user to install only the power cables he/she needs, and none that they do not. Everything is built onto a single 12V rail, so there will be no concerns for the user regarding load balancing. Additionally, this power supply comes with a 10 year warranty against manufacturing defects, which is industry leading, and shows the confidence that Seasonic places into this product.
Finally, the power supply came with a feature that I have never seen before, and that is a switch that activates the Seasonic Hybrid Silent Fan Control. This switch, when activated, puts the PSU fan into 3 phases: fanless mode, silent mode, and cooling mode. This allows the user to lower noise in their chassis without reducing power delivery. And when this power supply delivers 90% efficiency at 50% load, you'll likely never hear the fan.
This is a fantastic piece of equipment for any modern gaming computer, HTPC, or mining machine. I have purchased numerous Seasonic power supplies in the past, and i continue to be impressed with their product quality. With a 10 year warranty, and a professional, reserved look, its hard not to recommend this series of power supplies to anyone looking to build or update a new system.
After doing quite a bit of research, I found that the Seasonic Prime Ultra Gold series of PSUs are some of the best you can get if you have a smaller case like the SG13:
1) Its 135mm fan is not only a good deal quieter than the 92mm ones found in small SFX power supplies but can move a lot more air volume.
2) The fan mode on the Prime Ultra can be set so that it always runs. This is very important in small cases that use the PSU as an exhaust fan. For the SG13 it's a necessity to have an always running fan since the intake is directly above the the CPU heatsink and fan.
3) This power supply is fully modular so that you don't have to find places to stuff extraneous cables in your case.
4) No in cable capacitors makes cable routing easier. It also makes it easier to wire custom cables for the power supply if you want to do so in the future.
5) The wires in the ribbon type cables can be individually separated. I wasn't a fan of ribbon cables at first until I realized that it is possible to do this. It makes routing around obstructions like heatsink heatpipes a lot easier.
While I really like how Seasonic designed this power supply, there's a few things that I would change to make it even better:
1) Move the fan mode switch from the back to the front panel where the cable connectors are located. EVGA does it this way with their offerings and I think it makes more sense to do it that way. It allows the rear panel to have more ventilation holes and thus better airflow through the PSU.
2) While the louvers on the side of the PSU look interesting, they aren't functional. If you look at the side of the PSU, you'll see that they are covered by a clear plastic baffle. I understand this plastic is necessary to prevent interior components from inadvertently shortening out on the case but maybe a small slit could be made so that the louvers could become functional while still protecting interior components. If you are using this PSU as an exhaust, every little bit counts when it comes to airflow and ventilation.
3) I appreciate that Seasonic was able to squeeze in a 135mm fan in a 140mm PSU chassis but I am not so confident in the fan choice, a two wire, fluid dynamic bearing one made by Hong Hua. Sure, a long warranty mitigates this worry a bit, but you still have to deal with the downtime shipping the PSU to a repair center and waiting for it to return. At this price point, I would really prefer something like a Nidec or Sanyo Denki. Even better if it is a PWM one with ball bearings as those last even longer. Many power supply manufacturers advertise Japanese-made capacitors being used in their power supplies. I think this should also apply to fan choice as well.
4) The hexagon fan grill is a bit restrictive (see Puget Systems' article "Effects of Grill Patterns on Fan Performance/Noise"). A traditional wire grill only loses 2% of its airflow compared to 8% of a stamped steel hexagon patten. A wire grill is also quieter.
However, all these are minor things that don't distract that much from the power supply. All in all, if you are in need of a fully modular power supply that can fit in a compact case, I would not hesitate to recommend a Seasonic Prime Ultra Gold.
Unfortunately after more use, it seems that this unit has a fatal flaw. The Hong Hua fan used in it makes a low rumbling sound that is noticeable if you are in close proximity to it. I have my case on my desk and started noticing a particular sound after the hard drive in the case spun down and went to sleep. I opened up the case and traced the noise to the fan in the power supply. I am including a video of me toggling the fan mode switch (it sets the fan to always run or not) so you can get an idea of the noise. You may have to turn up your volume to hear it properly.
Looking around on Youtube and other sites, I am not the only one to have experienced this issue. It also occurs with previous Prime and Focus Plus units. All use the same fan supplier.
In all other aspects this power supply is great. However the fan really distracts from its operation. If you happen to have a decently noisy system with multiple hard drives you'll likely never notice the sound. If you happen to have a system with a SSD and slow moving case fans and want to keep a silent computer, then you might want to pick out another power supply.
If Seasonic could fix the fan this would be a 5 star product.
The cable layout is like so:
1 x 24-pin motherboard (sheathed)
1 x 4/8-pin CPU (sheathed)
2 x 6/8-pin PCIe (sheathed)
2 x 4 SATA (not sheathed)
1 x 3 molex (not sheathed)
1 x floppy (not sheathed)
This is a fully modular power supply. Modularity means that some or all cables are attached separately so you can pick and choose what you need. This feature becomes more important as wattage goes up so you won't obstruct airflow with unused cables. The cable attachment mechanism is nice and chunky; better than flat inserts that put all four wires in line.
Fifteen years ago, most power supplies were about 70% efficient: for a 100W load, they'd pull about 140W from the wall. Not anymore. We now have six major PSU ratings: 80 Plus and 80 Plus Bronze, Silver, Gold, Platinum, and Titanium. These correspond to half-load efficiencies of 80%, 85%, 88%, 90%, 92%, and 94%. Efficiencies at 1/5 and 4/5 load are about 4% less than half-load. This unit is Gold-rated, and according to PCPer, meets the 90% efficiency requirement for that certification.
There isn't a strong economic argument for efficiency. Relative to a Bronze PSU, the FOCUS saves about $5 a year for a 24/7/365 100W load in most parts of the country. More noticeable is the acoustic difference. Every watt that isn't going into the system needs to be vented from the PSU. Less efficient units require a bigger or faster fan, which makes more noise. The fan in this one doesn't even turn on until a 200W draw and doesn't begin to ramp up until 400W. For the overwhelming majority of systems the overwhelming majority of the time, it'll be completely inaudible.
I haven't commented on ripple and other low-level power characteristics, partly because they're exemplary (par for the course for Seasonic), but also because they're irrelevant. Short of a no-brand $15 tin-box special, just about every PSU on a retail shelf is good enough for a modern system if the wattage is adequate. Computers require less power than they ever have (outside of gaming and overclocking) and motherboard power regulation is better than ever. This FOCUS has no bad behaviors under load, but you could put a $30 Corsair in your system with nary a difference.
This is an excellent PSU for a system with a serious graphics card, and where noise performance and efficiency are at a premium. It's also rather well-priced like the G-series that preceded it. I've had at least four Seasonic power supplies. None have failed. None have had coil whine or strange fan behaviors that I've seen even on high-end models from other brands.
While Seasonic is an OEM for other manufacturers, I believe their own products represent the best they can do. As above, I don't think this level of performance is strictly necessary, but if you're willing to pay for it, you could hardly pick a better PSU. Just run your system by PCPartpicker's excellent power calculator before settling on a wattage.
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I am however quite disappointed that the power cable that came with the PSU was in fact a European plug and not a UK plug, I know its only around £5 to buy a new one but its still a price I was anticipating, I assumed that because it was being sent from the UK to the UK it would be packed with a UK plug. I feel like the plug type needs to be specified in the product description.
Ill probably post an updated review once I actually get it running.
Easy to install, provided cables are great and much better than the corsair.
GPU has coil whine after 100+ FPS is reached. Now is this the fault of the PSU? No idea unless I swap it out. Which I may do as Amazon have said I've got 6 months to return it.
Will update the review with any changes or findings.
This Seasonic is the second of this brand purchased.
The Focus line comes well packed with all the cables and hardware needed to run a fairly standard motherboard with Intel chipset.
The fully modular i.e. no cables permanently fixed to the chassis means that installation is straightforward, but probably adds to the cost.
Unfortunately, the power cable supplied was a two pin Schuko European type, despite the fact the unit was going to a UK address (The supplier is German).
The Seasonic instructions supplied are minimal and the usual multi-language - the English relevant instructions cover about two sides of booklet pages, so if you need to know more, you will have to go to the Seasonic website.
Fortunately, the ATX standard makes it difficult to get things wrong, but as a precaution, I log all the old cables before removal (I use key tags attached with cable ties to identify both ends of the cables).
All the new cables fitted the Asus motherboard, the only slight issue being the additional 4-way CPU cable which has a 4-way socket on the motherboard, but the Seasonic cable has two separate 4-way plugs fitted. As the Seasonic cables and separate wires are not colur-coded, it took a little while with a multimeter to confirm that the plugs were identical and both carried Ground and +12-volts. The unused plug was cable-tied back to make sure it could not touch and components on the motherboard.
Additional cable tie self-adhesive bases helped keep everything firm and tidy.
Powering up was straightforward and in use, this PSU is pretty much silent. The PSU has a pushbutton on the back of the unit which can be used to set the working mode of the cooling fan. Exactly what it does is not explained in the instructions, but one mode seems to be fan speed proportional to PSU temperature, the other has the fan running and blowing warm air from the rear of the PSU. Very little noise is heard and this new PSU has produced a much quieter running PC than before.
Overall, lightweight instructions and unusable mains lead aside, I would recommend this unit and would buy again
I have built my pc in march 2020
first i had a Corsair Rm850 for 1 month but it was noisy and then i was getting random restarts and then i got a Corsair Rm850i for a week or two, worse than the first one (noise wise, but less random restarts)
Then i got this seasonic focus gx750w i have it for 3 days(my pc was on 10+hours each day and no restarts or noise) it's really quiet and enough power for my Ryzen 5 3600 and red devil 5700xt GPU.
I would recommend it so far, i will come with updates if anything happends.
The replacement arrived 31st August. Again not factory sealed, and had a faulty ticking fan.
Are Amazon sending out their returns to me?
This Platinum 750 was a breeze to install. I think the cables are great - all covered with flexible braided black material and both ends are labelled so you can't really go wrong. Many are x/y (or x+y - same thing) meaning a block of x holes for older motherboards and a decoupled one (2 holes) for newer motherboards, so you can use just x holes or x+y holes. eg the PCI cables are 6/2; use just 6 or plug the other one in for 8.
To untangle my old PSU I simply unplugged one cable from the motherboard and replaced it with the corresponding cable from the new PSU. Repeat until all replaced - no mistakes can be made and no need for the motherboard manual thinking "where's that connector?!".
When doing motherboard work remember to pull the mains cable out first, then press the power button on the PC to drain away residual current stored in capacitors. Mine had enough left to spin up the CPU fan and graphics card for a second.
It is really quiet. The fan hardly comes on. Even running Folding At Home using both my new graphics card and my Intel i7 6700k 4Ghz the fan rarely comes on and when it does it's more for a waft than a hovercraft belt of air. My system is typical with a few SSD drives, one HD, a DVD, and the new graphics card (running 95% doing the F@H work). I honestly don't need 750W but it had a price reduction at the time.
There's a button on the unit which makes the fan run idly at all times if you wish.
It all feels very well made and is well packaged and presented. The PSU comes in a black drawstring bag nestled in sturdy a foam tray. Comes with a manual which I haven't read yet. Unhelpful I know, but helpful in that you don't need to read it to get your system up and running.
It came with a UK power cord and plenty of cables for me (I had a few left over). Importantly it had 6/2 pin PCI (x2) cables and x2 SATA cables (each with 4 heads).
6 pin PCI was designed for 75W. 8 pin PCI are rated for 150W. You can buy adapters to convert 6 pin to 8 pin but they wont magically increase your PSU electronics to deliver 150W.
That's why my new graphics card wouldn't come on - it knew my PSU couldn't deliver more than 75W so refused to budge even though it doesn't need all that juice when idle. A sensible strategy - it needs a horse not a pony.
I love the modular style. Having only the cables you need inside the PC makes it less cluttered and helps with the air flow. My old PSU in contrast was an explosion of cables to cover really old motherboards and (at the time) newer ones.
For full spec and list of cables I suggest going onto seasonic dot com into the focus-plus-platinum path and you'll find detailed information including easy to understand cable schematics - technical drawings rather than hard to fathom photos of curled up distant cables.
I'm impressed with the quality of this PSU and their website; it's the latter that made my mind up, knowing exactly what cables I was getting. 10 year warranty too.
Eventually I noticed that the 12v supply varied when under load from 12v to 11.2v, this is greater than the 5% allowance of the ATX spec for the power.
I don't often change PSU's and so decided to invest in one that I had read good reviews and offered a pretty long warranty.
This Seasonic seemed to provide both of those things.
It is expensive, costing more than many of its competitors PSU's in the 750w capacity. My actual needs are around 440w max from the mains and so this 750w supply is more than enough for me.
The supplied cables are great and not too thick to route around the rear of my Fractal Design R 5 case. The length is good as well.
There is a push button on the back of the PSU to engage hybrid mode, this will keep the fan off until the PSU gets up to around 50% plus load and the temps exceed a certain point. In use this means silence for me.
The 12v voltage doesn't vary from the 12.096 and from the review that I read this Seasonic is very good with controlling and voltage ripple.
Overall it is a very expensive purchase but I did not wish to skimp on a cheaper PSU and, like I have noted, this one comes with a 12 years warranty as well as Seasonic enjoying a reputation for building pretty excellent PSU's.
I hope that this review helped.
That was because its 550mm long - and for a standard ATX case and PSU that's around 100mm too short to allow the cable to run neatly around the side of the motherboard (a Gigabyte-Z97-D3H). I had to pass these (fortunately flat) cables under the corners of the MoBo to get the connector to fit - even then the connector strain was greater than I would have preferred.
No problem with any of the other cables - see photo of the guide which came with it for cable lengths of the 8/4 CPU at 550mm which needed to be 650mm - all other were fine. Solution: Doh! I should have gone for a M12-11-520 not the S12-11-520!
But this high end Seasonic (who supply Corsair and other manufacturers) just feels and looks like better quality. Cannot comment on performance yet as my new build is only a few weeks old.
The design means that the fan only ever comes on when under load and the fan has never even come on yet.
Lots of cables in the box including what Seasonic call a tester, which is essentially what you need when priming a water loop as you can run the pump without connecting anything else. It is just a blank ATX connector with the green and a black cable pre-connected to let the PSU switch on.
Unlike a lot of other PSU's this one comes with a 12 year warranty for extra piece of mind.
Sometimes you just get a feeling that something is going to be good as soon as you unpack it, and this PSU certainly looks and feels the part.
Here's hoping it lasts as long as my 10 year old Corsair.
The option to set the PSU fan to auto is a great addition. Very sturdy and well built. Cables are very solid and look great with no 'ketchup & mustard' cables showing.
The smallest little thing wrong with it, is that the MoBo connector is very stiff to bend, so in smaller cases can be a bit tricky, but still fits with a bit of moving around.
Still, I won't rate the product down like a lot of people do on here because of an incorrect power lead, it's not like it's Seasonics fault after all, it's Amazon's fault.
The Seasonic doesn’t get hot, doesn’t whine and doesn’t struggle do deliver power. I’m sure it’s efficient but I have no way to check.
I returned my Corsair 750CX to Amazon and got this instead. Much less noise coming from my machine now. It costs a little more but it’s worth the extra.
When I opened the PSU box I did notice one of the plastic bags was torn but didn't think anything of it. So clearly it wasn't working before and someone had returned it, only for Amazon or the seller to send it out again.
The cables were very stiff too when trying to install it.
First time buying Seasonic, after a lot of people and websites recommending them. Can't say I was impressed. I went back to Corsair again. My last Corsair PSU has been going for 7+years.