PowerSpec PSX 850GFM PSU Review: Micro Center’s House Brand Scores A Hit
Tom’s Hardware Verdict
The PowerSpec PSX 850GFM achieves a high value score thanks to its fair price. For a few dollars more, though, there are better-performing PSUs out there. This power supply is worth considering if you don’t want to spend more than $100, but must have integrated RGB lighting.
Pros
- +
Reasonable price
- +
ETA-A & 80 PLUS Gold efficiency
- +
Not noisy (LAMBDA-A-)
- +
Fully modular
- +
2x EPS and 6x PCIe connectors
- +
Selectable semi-passive operation
- +
RGB lighting
Cons
- —
Over-temperature protection is missing or set too high
- —
Low-quality fan
- —
PCIe and EPS sockets are identical (on the PSU side)
- —
Badly tuned OCP at 3.3V
- —
Less than 17ms hold-up time
- —
Short distance between four-pin Molex connectors
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Features & Specifications
PowerSpec, formerly called Inland, is Micro Center’s house brand. For those of you who aren’t familiar with Micro Center, it’s considered one of America’s leading electronics device retailers, with 25 stores across the nation. Although some of the company’s products are only available in-store, most of its PowerSpec PSUs can be purchased online. The PSX 850GFM, specifically, sells for $100 through Micro Center’s website. It offers 80 PLUS Gold and ETA-A efficiency levels, modular cabling, and RGB lighting.
But perfection eludes this model: its biggest weakness is a BaoDiKai cooling fan that employs a sleeve bearing. We’re not sure it’ll make it through Micro Center’s 10-year warranty. The company should have ditched the RGB lighting in favor of a better fan.
The PSX 850GFM has the name Super Power on its box, though we’re not sure if that’s a series designator or just a marketing description. We do know that High Power manufactures this PSU. Because the OEM does a good job of building value-oriented platforms, its designs are popular among smaller brands looking to populate their own power supply portfolios.
Specifications
Swipe to scroll horizontally
| Manufacturer (OEM) | High Power |
| Max. DC Output | 850W |
| Efficiency | 80 PLUS Gold, ETA-A (88-91%) |
| Noise | LAMBDA-A- (25-30 dB[A]) |
| Modular | ✓ (Fully) |
| Intel C6/C7 Power State Support | ✓ |
| Operating Temperature (Continuous Full Load) | 0 — 50°C |
| Over Voltage Protection | ✓ |
| Under Voltage Protection | ✓ |
| Over Power Protection | ✓ |
| Over Current (+12V) Protection | ✓ |
| Over Temperature Protection | ✗ |
| Short Circuit Protection | ✓ |
| Surge Protection | ✓ |
| Inrush Current Protection | ✓ |
| Fan Failure Protection | ✗ |
| No Load Operation | ✓ |
| Cooling | 135mm Sleeve Bearing Fan (BDh23525S) |
| Semi-Passive Operation | ✓ (Selectable) |
| Dimensions (WxHxD) | 152 mm (W) x 87 mm (H) x 162 mm (D) |
| Weight | 1. 59 kg (3.51 lb) |
| Form Factor | ATX12V v2.4, EPS 2.92 |
| Warranty | 10 Years |
PowerSpec’s PSX 850GFM is 80 PLUS Gold- and ETA-A-certified. With regard to noise, it satisfies the LAMBDA-A- specification’s requirements; it isn’t noisy under normal operating conditions. Our test results do suggest that this PSU lacks over-temperature protection. Moreover, the first two samples we tested had issues with over-current protection on the 3.3V rail being set too high, leading to the DC-DC converter’s failure. High Power reviewed our findings and subsequently lowered the OCP’s triggering point at 3.3V.
The 135mm sleeve bearing-based fan might have RGB lighting, but its build quality is low (especially for a $100 PSU covered by a 10-year warranty). A higher-quality fan with at least a rifle bearing should have been used instead. There is a selectable semi-passive mode available, which alleviates some of the fan’s workload if you leave it enabled.
A depth measurement of 162mm is considered fairly compact. However, similar-capacity PSUs like Seasonic’s Focus Plus models feature even smaller dimensions.
Power Specifications
Swipe to scroll horizontally
| Rail | 3.3V | 5V | 12V | 5VSB | -12V | |
|---|---|---|---|---|---|---|
| Max. Power | Amps | 22 | 22 | 70.9 | 3 | 0.3 |
| Watts | 120 | 850 | 15 | 3.6 | ||
| Total Max. Power (W) | 850 |
On paper, the minor rails deliver up to 120W maximum power, though we found they can go much higher.
The single +12V rail is able to handle the PSX 850GFM’s full capacity on its own. This is typical for a PSU that utilizes DC-DC converters for the minor rails. Moreover, the 5VSB rail sports enough capacity to satisfy a modern system’s needs.
Cables & Connectors
Swipe to scroll horizontally
| Modular Cables | ||||
|---|---|---|---|---|
| Description | Cable Count | Connector Count (Total) | Gauge | In Cable Capacitors |
| ATX connector 20+4 pin (600mm) | 1 | 1 | 18AWG | No |
| 4+4 pin EPS12V (650mm+150mm) | 2 | 2 | 16-18AWG | No |
| 6+2 pin PCIe (500mm+150mm) | 3 | 6 | 16AWG | No |
| SATA (500mm+150mm+150mm150mm) | 3 | 12 | 18AWG | No |
| Four-pin Molex (550mm+100mm+100mm+100mm) | 1 | 4 | 18AWG | No |
| FDD Adapter (+150mm) | 1 | 1 | 22AWG | No |
| RGB Cable (580mm+80mm) | 1 | 2 | 26AWG | No |
| AC Power Cord (1430mm) — C13 coupler | 1 | 1 | 14AWG | — |
It’s great to see this PSU equipped with two EPS connectors, extending compatibility to motherboards designed for high-end CPUs.
There are also six PCIe connectors available, supporting multiple graphics cards in small cryptocurrency mining systems. You get plenty of SATA connectors, along with four Molex connectors for peripheral devices like fans and water cooling pumps. Besides a Berg adapter, an RGB cable is also provided for connecting the PSU to a motherboard with lighting control/sync options.
The cables don’t have any extra ripple filtering capacitors, and their length is satisfactory. The distance between connectors is ideal on all of cables except for the four-pin Molex ones, where the connectors are only 10cm apart. We’d like to see 15cm between them, at least.
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Aris Mpitziopoulos is a Contributing Editor at Tom’s Hardware US, covering PSUs.
What’s the Best Power Supply in 2022?
Sure, it’s not as exciting as graphic card shopping, but a PSU is the heart of your PC.
The last thing you want is an inefficient machine due to poor power, especially after spending all that cash on the best components.
Plus once it’s dying, you might not know until it’s too late.
NOW READ: These are the best 4K TVs you can buy in 2022
And you want to get the right one from the start, as replacing one later is a pain.
Fortunately, we’ve ranked the best power supplies: overall, as well as for gaming, video editing and streaming, and budget options.
What Makes a Good Power Supply?
Wattage
Wattage is obviously the most important part of a power supply, and the first decision you need to make is: how much do you need?
There are huge leaps in price the stronger you go, so you don’t want to get more than necessary. Plus, higher wattage PSUs will mean a higher electricity bill and tend to generate more heat and noise.
You need to add up your motherboard, GPU and PSU power requirements to make a total. Then add a bit extra for security, and in case you plan on updating other components to something more power-hungry later.
As a rough guide, 750W or less will definitely be enough for most people. For gamers, 850W should do just fine. Only the most extreme gamers and 3D renderers will need to go beyond this.
Fortunately, there are tons of calculators around to make this easy for you:
- Seasonic Wattage Calculator
- MSI PSU Calculator
- be quiet! PSU Calculator
- Cooler Master Power Calculator
- Newegg PSU Calculator
Ratings and protection
PSUs come with some great certifications, such as efficiency ratings that (e.g. 80 Plus Gold) and noise ratings (e.g. LAMBDA-A+).
These instantly tell you the quality of the PSU.
Decent PSUs should also have decent protection features, such as OCP (Over-Current Protection) and SCP (Short Circuit Protection) to ensure everything runs safe and smooth.
The warranty is another big one. Because PSUs are so important and should last for the long term, they often come with long warranties. A long warranty also shows you the confidence the manufacturer has in its own product. They wouldn’t give out 10-year warranties if they weren’t sure of a quality, long-lasting build.
Compatibility
Finally, you’re going to want to make sure the PSU is actually compatible with your system, or you’re going to have major buyer’s remorse once you’ve unboxed it.
Check what connectors the PSU has, and make sure you’ve got the cables to match, with the right power supply.
Size is another big one to watch. Check the physical dimensions of the PSU to make sure it will fit inside your case. Just because you’ve got an ATX case doesn’t mean an ATX PSU is guaranteed to fit.
How We Choose Power Supplies
Features and Performance
The above features give a good idea of quality, but to really compare one PSU against another, you’ve got to perform real-life testing.
With power supplies, there’s a whole host of things you can measure, such as ripple measurements to measure ripple suppression, cross-load tests and infrared to measure temperature.
Sure, there’s an efficiency rating of 80 Plus Gold, but that only specifies a minimum. Testing can tell you exactly how efficient it is at different loads, compared to competitors.
The same goes for noise.
Purpose
We always bear the user purpose in mind, instead of just going for the flagship PSUs.
User purpose is crucial for PSU, as different activities will require different wattages.
For example, barely anyone needs above an 850W supply, so why spend the money?
Noise is a major issue for some, especially if you’re spending long hours editing video or want to stream without noise interference.
Value for money
The price has to be reasonable and fit for purpose. And the most important question is, can you get more for your money elsewhere?
Best Overall Power Supply
Corsair RM750x
Image credit: Corsair
Corsair RMx
Tech Specs
Form factor: ATX
Capacity: 750W
Efficiency rating: 80 Plus Gold
Modularity: Full
Pros
- Quiet
- High-quality build
- 10-year warranty
Cons
- 750W not enough for high-end gaming
- Short distance between peripheral connectors
750W is a very popular wattage that combines the capacity of high-end hardware with competitive prices.
It will certainly be enough power for most.
And Corsair’s popular RM series has produced a model that’s currently the best of the bunch.
It’s fully modular, meaning no messy cables. It’s got an
80 Gold Plus efficiency rating with LAMBDA-A+ certification. And on top of that, it’s got a staggering 10-year warranty.
Compared to its predecessor, it’s 2cm shallower, has a second EPS connector, and more peripheral connectors, all of which is much more practical.
The connectors include the popular 8 four-pin Molex connectors, though the distance between them is 10cm, which is a little tight.
It’s very well-built. There’s a 135mm fan with a rifle bearing and microcontroller, which reduces noise. The ATX, EPS, and PCIe cables also come with capacitors to help reduce ripple.
These worked well, as ripple suppression on all rails was top-notch.
The real beauty of this PSU is its volume; it’s so quiet!
It’s average noise level (between 30-32°C) is just 19dbA.
One of its main competitors at this price point, Seasonic’s SSR-750FX 35, was almost double at 35dbA.
That’s over 1.5 times the noise since a 10dbA increase represents double the apparent volume to human ears.
Even more remarkably, Corsair’s model even achieves near-silence at full load or overloads. It was just 30dbA at full load at 46°C, compared to the Seasonic SSR0750PX which reached 45dbA.
Performance is similar to the Seasonic, but the noise levels just edge it in front.
Honorable Mentions:
Seasonic SSR-750PX: another well-rounded modular performer with similar specs and price, but noisier.
Best Bang for the Buck Power Supply
Bitfenix BF450G
Image credit: Bitfenix
Bitfenix BF450G
Tech Specs
Form factor: ATX
Capacity: 450W
Efficiency rating: 80 Plus Gold
Modularity: None
Pros
- Very efficient
- Extremely quiet
- Compact
Cons
- Not modular
- Power may be too low for some
It’s got an 80 plus Gold efficiency rating, which is impressive for the price.
Even within this, it tested over 89% efficiency, better than most competitors.
It’s very quiet, with a LAMBDA-A++ certification, which again is surprising at this budget, and shocking since it doesn’t even have a semi-passive mode and a small 120mm fan.
This is due to its excellent build. This well-designed PSU has minimal energy losses, which keeps it at a low temperature, enabling the fan to spin slowly and remain quiet.
Even at 100% load and over 46°C, the noise was below 40dbA. Below this, the fan never spun at its maximum speed and spun at its lowest speed most of the time.
3 +12V rails deliver 450w combined, and the 5VSB rail can deliver up to 2.5A.
In terms of protection features, OPP is set high and short circuit protection is on all rails.
Every rail had excellent ripple suppression, though in this aspect the EVGA 450 B3 does edge ahead. The ATX cable has capacitors to help reduce ripple on the PSU’s outputs.
Load regulation was tight on all rails, beating other 450 models like the EVGA 450 B3 and Corsair CX450.
Overall performance beat other popular 450 models (Corsair, EVGA), and was only very slightly behind the Seasonic SSR-550X.
There are 2 PCIe connectors and 2 4-pin Molex connectors. The distance between connectors is a nice 15cm. The PCIe and EPS connectors are powered by dedicated rails.
A big downside is it’s not modular, which makes cable management a bit difficult, but you can’t expect too much at this price point. And Bitfenix has chosen to sacrifice in this area, rather than the actual components, a wise choice.
At least the PSU is very compact at just 150 x 87 x 140mm, making it easier to install.
The warranty is 5 years too, which is very decent.
The power might not be enough for some, but if you can swing 450w, this is definitely the best all-round choice.
Honorable Mentions:
EVGA 500 B1 – another excellent budget option if you need slightly more power, but it only has an 80 Plus Bronze efficiency rating and isn’t as quiet.
BitFenix Whisper 450 M – a slightly more expensive version if you want a modular PSU.
Best Power Supply for Gaming
Corsair RM850x
Image credit: Corsair
Corsair RMx
Tech Specs
Form factor: ATX
Capacity: 850W
Efficiency rating: 80 Plus Gold
Modularity: Full
Pros
- Fully modular
- Quiet
- Great build
Cons
- Short distance between peripheral connectors
- Pricey
Another Corsair RM offering takes the lead for gaming, too, with a model with much more power than the 750x, but a similar great design and warranty.
Again its fully modular with 80 Plus Gold efficiency, and that 10-year warranty to reassure customers of Corsair’s confidence in the quality of its products.
Like the 750 model, there’s a 135mm rifle bearing fan. It’s 20mm shorter than its predecessor, meaning it’s more likely to fit into your build.
The +12V rail delivers the full capacity. The minor rails are too strong, with 150W maximum together, whilst the 5VSB rail has a maximum output of 3A.
Again there’s 2 EPS connectors, 6 PCIe ones, and lots of peripheral connectors, including 8 Molex connectors. Again though, there’s only 10cm distance between these, which is less than ideal.
The cables have decent length, though, and the ATX, EPS and PCIe cables include inline caps for improved ripple suppression. Ripple suppression overall is excellent.
Again, it wins in the noise arena; it’s one of the quietest 850W models out there. It’s got a LAMBDA-A+ noise rating, quite an achievement for an 850w power supply.
EVGA’s 850 G3 and Seasonic’s SSR-850FX are the main competition, and they don’t achieve the same noise rating (LAMBDA-S++).
The build is excellent. Despite being smaller than its predecessor, it’s even quieter and performs just as well. A microcontroller enables slower fan rotation, and there are different controllers on the primary and secondary sides.
Some would like to see an updated look, though, as this design has been around a while.
Honorable Mentions:
EVGA SuperNOVA 850 G3 – similar performance, but more pricey.
Seasonic’s SSR-850FX – similar specs, but not as quiet.
Best Power Supply for Video Editing
EVGA’s SuperNOVA 650 G3
Image credit: EVGA
EVGA G3
Tech Specs
Form factor: ATX
Capacity: 650W
Efficiency rating: 80 Plus Gold
Modularity: Full
Pros
- Modular
- Excellent value
Cons
- Only 1 EPS connector
- Not the quietest
650W should be enough for video-editing at resolutions at 4K and above.
And this is one of the cheapest 650W 80 Gold Plus models you can buy. It’s truly excellent value, especially for video editors who have probably already spent a whole heap on both a high-performing CPU and GPU.
You’d think this would mean certain sacrifices in performance, but no; it’s overall performance is actually one of the best of the 650W 80 Gold Plus models, including Corsair and Seasonic.
And the Super Flower build is solid (Super Flower are one of the best in the biz), with top-of-the-game ripple suppression and very tight load regulation on all rails.
The +12V rail delivers all of the PSU’s capacity, the minor rails are perfectly capable, and the 5VSB rail can deliver a large 3A.
However, noise-wise, it has a LAMBDA-A- noise certification. This isn’t the best, but it certainly doesn’t mean it’s ‘noisy’. It has an average noise of 27.31dbA. For comparison, this is louder than Corsair’s similar models.
The problem is the 130mm HDB fan gets a bit overly aggressive, rotating faster than most at lower temperatures.
There’s also only 1 EPS connector which may be an issue for some users, as well as 3 PCIe, 6 SATA and 4 Molex.
It’s fairly compact at 85 x 150 x 150mm and comes with a decent 7-year warranty.
Honorable Mentions:
Corsair AX1000 – if you need top-end power for things like 3D rendering, this is the best 1000W option.
Best Power Supply for Streaming
Seasonic SSR-600TL
Image credit: Seasonic
Seasonic
Tech Specs
Form factor: ATX
Capacity: 600W
Efficiency rating: 80 Plus Titanium
Modularity: Full
Pros
- Fanless
- Crazy efficient
- 12-year warranty
Cons
- Expensive
This PSU sets records in many ways.
The best streaming requires total silence, and that’s what you’ll get with this fanless PSU. It’s got the top Cybenetics noise rating of LAMBDA-A++, which promises silence.
Noise levels were always below 28dbA, which is basically a whisper.
Passive-cooling CPUs are typically reserved for lower wattages, but the Seasonic SSR-600TL bucks this trend.
It’s outfitted with high-quality 105c Japanese capacitors
Not only that, but it’s also got the highest Cybernetics efficiency rating of 80 Plus Titanium.
This means a 94+% efficiency level at 50% load, and 90% at 100% load.
However, testing by third parties has shown it to be even better at 96% at 50% load, and 93.5% at full load.
With both top efficiency and noise, this makes it one of the highest-quality PSUs around.
It’s fully modular of course, and also very compact at 170 x 150 x 86 mm. Perfect for a streamer’s build.
There are 3 heatsinks and the entire thing is vented to allow maximum airflow.
The +12V rail can handle a stellar 50A, and the 5VSB rail an average 2.5A. However, the minor rails can only deliver 100W combined, which is a little weak, but they aren’t used much.
Load regulation is very tight, beating all major 650w competitors overall.
In terms of protection features, OPP is good and there’s short circuit protection on all rails. It’s well-protected from voltage spikes and large inrush currents as well.
Ripple suppression is solid, helped by high-grade 105c Japanese capacitors throughout.
In fact, KitGuru found this model’s ripple suppression to be in the top 2% of all models.
It includes 2 EPS connections, 4 PCIe connectors, a rarity on fanless models, 6 SATA, and 5 Molex. There’s less than 15cm between the peripheral connectors, which isn’t ideal, but it’s limited by its overall size.
It’s overall performance beat all other major 650w models except for its own, the Seasonic SSR-650TD, which isn’t fanless.
650W should allow you enough headroom for components for game streaming at 1080p and even 1440p.
The only downside is the higher price you pay for fanless.
But at least Seasonic puts its money where its mouth is with a record 12-year warranty.
Honorable Mentions:
Seasonic SSR-650TD – if you’re not fussed about silent passive-cooling, this is another great option.
Best Budget Power Supply for Gaming
Cooler Master MasterWatt 650
Image credit: Cooler Master
Cooler Master
Tech Specs
Form factor: ATX
Capacity: 650W
Efficiency rating: 80 Plus Bronze
Modularity: Semi-modular
Pros
- Affordable
- Quiet
- Reliable brand
Cons
- Only 80 Plus Bronze
- Semi-modular
If you want to game on a budget, look no further than this solid Cooler Master series.
It’s not the cheapest available, but sticking with a decent brand that’s safe and reliable is worth it when it comes to PSUs, especially if you’ve invested in a mid-range graphics card you plan to overclock.
It’s got 80 Plus Bronze efficiency and is a pretty impressive 86.6% at full load.
Compared to competitors, it really impresses with noise as well, which is a definite plus when spending long hours gaming.
Up to 15% load (i.e. around 100w), this model is silent. Up to 270W, it’s only 28dbA, which is just above a whisper. At 500W it’s around 33dbA. Max dbA is 34.9. So basically, it’s whisper-quiet up until around 500W.
This is due to the Silencio FP 120mm fan, which has an LDB (Loop Dynamic Bearing) design with low vibrations and an ultra-low current.
The design is a clean-looking black and the build is decent for the price point, with decent soldering quality and 85c capacitors.
It’s semi-modular, with 2 PCIe connectors and 2 SATAs.
Temperatures are around 62°C at full load, which definitely can’t match the premium 750w models, but you get what you pay for.
The +12V rail can deliver 54A, which is definitely enough for a gamer’s graphic card. The minor rails can deliver 22A combined.
Ripple suppression is good, hitting 50mV on the +12V rail at full load.
And finally, it comes with a nice 5-year warranty.
Honorable Mentions:
Cooler Master MasterWatt 750W – if you need more juice and have a bit more cash, Cooler Master also has a 750W in this series.
Which Power Supply Should I Buy?
Most users will be more than happy with the stellar Corsair RM750x, a great all-round performer with enough juice for everyone. It’s a high-quality fully-modular build with an 80 Plus Gold rating, and as a bonus, it is very quiet.
High-end gamers who need a bit more capacity for that power-hungry GPU should go for its big bro, the Corsair RM850x.
Gamers on a budget can’t go wrong with the Cooler Master MasterWatt 650.
Most video editors and streamers can get away with slightly less power. The super silent Seasonic SSR-600TL is perfect for streamers, whilst the EVGA’s SuperNOVA 650 G3 is the strongest performer in its field, and one of the cheapest, suiting video editors.
Finally, those on a strict budget will be best off with Bitfenix BF450G, if they can get away with the lower wattage.
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