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Silverstone SFX Series 450W 12V 80PLUS Gold Power Supply 80mm Fan

Silverstone SFX Series 450W 12V 80PLUS Gold Power Supply 80mm Fan - 1
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Silverstone SFX Series 450W 12V 80PLUS Gold Power Supply 80mm Fan - 75786_l.jpg Silverstone SFX Series 450W 12V 80PLUS Gold Power Supply 80mm Fan - 75786_1.jpg Silverstone SFX Series 450W 12V 80PLUS Gold Power Supply 80mm Fan - 75786_2.jpg Customer Photos (0)
Silverstone Technology
Reg. Price: $145.91  CAD
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SKU: 75786
Shipping Weight: 3.5lbs

Part #: ST45SF-G

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Product Videos [ Edit ]

Features [ Edit | History ]

After successfully expanding and leading SFF(small form factor) cases and SFX PSU into the DIY (do it yourself) market, SilverStone engineers have continued their push for advancement in these categories by releasing a true upgrade-worthy small form factor power supply, the ST45SF-G. Despite being half the size of a regular ATX power supply, the ST45SF-G can still produce continuous power output of 450W. Its 80 PLUS Gold level efficiency is a great leap from the previous SFX best of 80 PLUS Bronze and the full modular cables is also the first of its kind for this form factor. To enable users to easily take advantage of this excellent SFX power supply, an adapter is included to convert  ST45SF-G to mount in any ATX case in addition to ones that fit only SFX. For SFF users and for SilverStone, the ST45SF-G is more than just an upgrade, it is an important milestone for DIY desktop computer.

  • Support standard SFX form factor and ATX via included bracket
  • 80 PLUS Gold level efficiency (87%~90% efficiency at 20%~100% loading)
  • 100% modular cables
  • 450W continuous power output at 40? operating temperature rated for 24/7 operation
  • Class-leading single +12V rail with 37A
  • Strict ±3% voltage regulation and low ripple & noise
  • Silent running 80mm fan with 18dBA minimum
  • Single PCI-E 8pin and dual PCI-E 6pin connectors support
  • Active PFC

Specifications [ Edit | History ]

Model No.
Max. DC Output
Load Range
+3.3V +5V +12V1 +5VSB -12V
19A 14A 37A 2.5A 0.3A
Peak (Amps)
/ / / / /
0A 0A 0A 0A 0A
Range (%)
±3% ±3% ±3% ±5% ±10%
Line Reg.(%)
±1% ±1% ±1% ±1% ±1%
50mA 50mA 120mV 50mA 120mV
combined +3.3, +5V
combined +12V
444W / 37A
Input Voltage
90V ~ 264V
Input Frequency Range
47Hz ~ 63Hz
Active PFC(PF>0.90 at full load)
87%~90%(20% to 100% loading)
100,000 hours at 25°C, full load
Operating temperature
0°C ~ 40°C
Over current protection
Over power protection
Over voltage protection
Under voltage protection
Short circuit protection
No Load Operation
1 x 24 / 20-Pin motherboard connector(300mm)
1 x 8 / 4-Pin EPS / ATX 12V connector(400mm)
1 x 8/6-Pin PCIE connector(400mm)
1 x 6-Pin PCIE connector(400mm / 150mm)
3 x SATA connector(300mm / 200mm / 100mm)
2 x 4-Pin Peripheral connector (300mm / 200mm)
1 x 4-Pin Floppy connector(300mm / 200mm / 200mm)
Black(Lead-Free Paint)
Cooling System
Single 80mm silent fan
Noise Level
20dBA minimum
125 mm (W) × 63.5 mm(H) × 100 mm(D)
1.45 Kg
Form factor
80 PLUS Gold
Includes SFX to ATX bracket for use in ATX case
GPU Support list

Customer Reviews of Silverstone Technology ST45SF-G

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Silverstone Technology ST45SF-G reviews.
Experience: 2 Days


- Quiet
- Sufficient current to power a GTX970
- Enough connector cables for all my components. No need to use molex-to-PCIe connectors.
- Expensive (expected for SFX size)
- SATA power connectors are all on a single cord and depending on what case you have, it might not be possible to connect multiple HDDs without adding extenders due to physical length being insufficient, despite having enough connectors
I'm downsizing to a mini ITX build (RVZ01 to be specific) and this was a good fit that still provided enough current for a GTX970 plus two SSDs and one HDD.

While expensive (over twice the price of an equivalent ATX model), it gets the job done without being loud or overheating. Hopefully the cost of SFX models in general will go down over time.

Experience: 1 Months


80Plus Gold in a SFX PSU
Modular cables end up getting in the way
Had a previous SFX PSU die in my silverstone sugo (SG05B) but the modular plugs cause the cables to stick out the back of the PSU more than a non-modular PSU would. This prevented me from putting one of the brackets back into the case as the cables were in the way. So it fits, but it's more of a squeeze than a non-modular.

Next, also despite being modular, I needed one of each cable, since I needed one molex for the slim DVD drive power adaptor, one sata for the SSD, one PCIE 6pin for the GPU and of course the MB connectors. This one is kind of my fault for not closely looking into that, but the specs don't tell you exactly what peripheral connectors are on what cables.

Aside from this, it's a good high efficiency PSU from a trusted quality brand.

Experience: 4 Months


Small, tiny, modular and powerfull
Good only for one boot, its my second psu and boot of them didnt work after reboot. Need another exchange again.... Fan is noisy
Excellent for small size cases like DS380 but for an unknow reason its clearly unstable 12volts rail seems to be fragile. It's my second psu first one didnt survive 2 days. Now I need to pay again (twice for now) shipping for device I'm not sure it will work for long. Maybe I'm just unlucky, but found out that some users are facing same problem.

Mr. Rampage
Experience: 1 Months


Quiet, small, decent price point, Gold Standard, modular
80mm fan, Rounded cables
Not much to complain about this product. It does what it was meant to do and that's to provide power.

If you're looking for an SFX power supply, this is pretty much the only one that's a Gold Standard. It's fairly quiet as I have version 2.0.

If I had to nit-pick on this, I would have preferred flat cables as working with an ITX setup, rounded cables makes it much more difficult to route the cables. The cables that come with it are fairly rigid making it difficult to work with.

The 80mm fan is decent, but time will tell how it will hold up. I wish it did come with a 92mm fan, but it may have been a space issue with the design.

If you're building an ITX system, this is the only way to go!

Experience: 7 Days


Modular wiring helps reduce clutter. Small size. Relatively low noise but could be better, see cons. Fits in ATX case with supplied adapter.
Fan is more noisy than it should be during idel useage. NCIX is shipping ver 1.1, while ver 2.0 has supposedly fixed the fan noise problem.
The model I received had a wire routed into the fan blades causing a terrible noise on power up. Luckily I was able to push the wire out of the way without voiding the warrenty seal, but it means that Silverstone is not testing these units before shipping since there's no way this unit would have passed.

I was dissapointed to receive ver 1.1, it really is more noisy than necessary during idel - see other reviews about this problem. If you buy this power supply, make sure it's ver 2.0 or greater. The noise is faint, but could be annoying for an HTPC build. In another type of build it probably would be silent.

I tooks away 1 star for quality (improper routing of a wire into fan blades) and 1 star for the idel noise levels. Note this is for ver 1.1, ver 2.0 is supposedly better.

Experience: 1 Weeks


Small, tiny, modular, powerful
Modular cables are too snug, fan rattles initially
Got this for a SG05 case and I found that some of the modular cables are so snug that they don't "clip" into the thing they should and just dangle at the edge of it. Beyond that it works perfectly. When I first got it I had issues with the PSU because it made ticks but I shook it and the obtrusive fan noises stopped.

Experience: 1 Months


80+ Gold Rating
Small cables for small cases
Adapter included which allows you to install it in standard ATX power supply cases.
VERY tight fit in an ft03 mini but it was expected.
Cable sleeving could have been better, but only corsair really gives premium cables with their power supplies so its not a big deal.
This is the best SFX power supply you can buy. Amazing for mini itx builds.

Experience: 30 Days


small size- shorter cables
fan a little louder than non modular version
excellent for small size cases

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Messages about Silverstone SFX Series 450W 12V 80PLUS Gold Power Supply 80mm Fan

This the Modular one? (SummE- Aug 26, 12, 0 Replies)

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Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.

Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

Posted by: TheBigTroll1226 @03/14/13
Submit a review link   |   Latest 30 reviews

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