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Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply

Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 1
Actual product may not be exactly as shown.
Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 105439_l.jpg Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 105439_1.jpg Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 105439_2.jpg Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 105439_3.jpg Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 105439_4.jpg Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 105439_5.jpg Silverstone SFX-SERIES SX500-LG 500W SFX-L Form Factor 12V 80PLUS Gold Modular Power Supply - 105439_6.jpg Customer Photos (0)
Silverstone Technology
Reg. Price: $139.98  CAD
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Part #: SX500-LG

SKU: 105439
Shipping Weight: 4.1 lbs

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Customer Reviews of Silverstone Technology SX500-LG

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 SX500-LG reviews.
Experience: 1 Weeks

Fairly silent unit with energy efficiency


- Fan isn't overly loud, the most silent Silverstone SFX unit at this time as fair as I can tell
- 80+ gold efficiency
- Small in size
- Includes an ATX to SFF bracket (A major plus)
- Semi-fanless operation does not exist on my Ver 2 unit
- Cables are not braded, they are flat and wide
- Fan isn't silent
- Fan is low profile and extremely hard to find a replacement for
I've only found one cooling fan that is 120mm and low profile size and installs as a perfect replacement (other than the fact it is a 3 pin header verses a 2 pin header "rajintek Aeolus B 120mm PWM" which at low RPM is a much closer to silent fan.
This power supply is functioning well with my MSI gaming 1060 with my Intel i5 6600K with a fair bit of power to spare. I enjoy super silence so my main dislike is the light fan hum, however this unit is a great improvement over the fan noise other Silverstone SFX at this current time.
Only thing that stopped me from purchasing from a more expensive competing high end brand was the fact that finding a ATX to SFF bracket isn't easy and my Cooler Master Elite 130 case does not have an SFF bracket for it's ATX sized opening.

If air flow is a concern these cables are are flat and wide and can impede air flow in a case. The cables are also stiff but means they maintain how you bend them better without the use of twist ties or zip straps.

This review was modfied by poster @ 01-10-17 01:01 AM

Experience: 365 Days

perfect for mini itx build if your case allows


-120mm fan
-fully modular
-silverstone quality
-long cables
one of the best PSU available for mini itx build if the case allows SFX-L format, i have tried the SFX model from silverstone its MUCH noisier and this is dead silence, and luckily i have no coil whine as my build is super silent no mechanical hard drive and very limited premium fans spin at low speed so I can really tell if the PSU is buzzing or not. Cables can be a bit too long for mini case builds though

Experience: 10 Days


Small PSU fit my SFF case perfectly
Cables extremely easy to route
Fan would not turn on
Bought this for a SFF build and it worked great (except for the issue below). Very easy to install and route the cables. Flat cables were very flexible and I could route them any which way I wanted.

Issue I had was the fan would not turn on and the side of the PSU was getting pretty hot. I RMA'ed and was going to get a replacement, but I decided to return it and wait for Silverstone to release their 700W SFX-L unit.

This is my third Silverstone PSU (second SFX). Would definitely buy Silverstone again. Also, +1 to NCIX for the easy RMA process!

Experience: 1 Months


Compact and powerful
Gold certificated
The fan make a hell lot of noise...
Everything is good except the fan.
Make a huge amount of noise, and its directly solder to the board which make switching out the fan difficult.
I'm still considering changing the fan.... SO MUCH NOISE!

Experience: 30 Days


-Reliable Power
-Shorter Cables better for small cases
-Very noisy fan
-Pointless semi-fanless operation
-Ribbon cables
Soon after receiving my first unit, I returned it as the fan was very noisy. NCIX was really easy to deal with and promptly sent me a replacement. However, the replacement is just as noisy as the first one. And reading online, that's just how loud that PSU is. It makes a whirling/knocking sound. It's the loudest thing in my computer - even louder than a stock intel cooler at load. I can sometimes hear the knocking the in the room next to it.

The fanless operation is pointless. My very lean setup will trigger the fan after an hour at idle.

If Silverstone could fix the fan operation on this, they'd have a winner. Sadly not a lot of other options out there.

Experience: 30 Days


Works and small
Whining noise
There is a whining noise with my unit but works as advertised. Fan of mediocre quality

Experience: 10 Days


Quiet SFX power supply, short cables, 120mm fan
ribbon cables, semi-fanless mode is useless
Overall a good power supply, the only con are ribbon cables and semi-fanless mode, which while is indeed present on practice never works for too long even in the system idle. Overall the best SFX power supply out there for now

Experience: 2 Weeks


-Fully Modular
-Includes power cord as well as all necessary cables.
-Longer than non modular counterparts
Great modular power supply I bought for my Silverstone Raven RVZ01. It was a hassle to fit into the case due to the case's very limited space and the power supply's longer body, but I managed to do it although cable management was hard to do unless you have tiny hands. The only thing to keep in mind is this is a bit longer than non modular power supplies otherwise its a great power supply for small form factor pcs.

Experience: 1 Weeks


quiet, stable, small
This is perfect for any m-itx builds. The power supply is very quiet and on top of that its 80 plus gold efficiency. Highly recommend.

Experience: 5 Days


-does its job as needed for a SFX psu
-quiet and efficient
it is more expensive than any other 500w unit out there
Do not get this psu if you are going to use it in a atx case since there are better options. only get this if you need a sfx unit

Product Videos [ Edit ]

Features [ Edit | History ]

For small form factor enthusiasts, the standard SFX power supply form factor has excellent combination of size, power, and affordability. At 100mm deep, however, the standard SFX PSU is also limited in fan size to 80mm. While advances in engineering and components have made modern high-end SFX PSUs quieter than ever, there is still inherent limitation with 80mm fans ability to dissipate heat at maximum loading conditions while maintaining satisfactory noise profile for users sensitive to higher-pitch sounds. With this in mind, SilverStone has released a ¡°lengthened¡± variation of the SFX form factor called, SFX-L. With 30mm of added depth, a SFX-L power supply has enough room to fit a 120mm fan, thus its maximum load noise can be not only lower in intensity (via slower fan speed), but also lower in pitch (due to larger fan size).

The first model to debut in the SFX-L will be the SX500-LG, a 500W model that includes all features available from top of the line SFX SilverStone PSUs such as 80 PLUS Gold efficiency, modular flexible flat cables, and semi-fanless capability. An ATX adapter bracket is included as well to enable users to install this PSU into any small or even larger cases that do not have SFX mounting holes.

  • Silent running 120mm fan with intelligent semi-fanless operation
  • Support SFX-L form factor and ATX via included bracket
  • High efficiency with 80 PLUS Gold certification
  • 100% modular cables
  • All cables made with flexible flat arrays
  • 500W continuous power output at 40¡æ operating temperature rated for 24/7 operation
  • Class-leading single +12V rail with 40A
  • Strict 3% voltage regulation and low ripple & noise
  • Support dual PCI-E 8/6pin connectors
  • Active PFC

Specifications [ Edit | History ]

Model No.
Max. DC Output
                 Load Range
+3.3V +5V +12V +5VSB -12V
20A 20A 40A 3.0A 0.3A
Peak (Amps)
/ / / / /
0A 0A 0A 0A 0A
Range (%)
3% 3% 3% 5% 10%
Line Reg.(%)
1% 1% 1% 1% 2%
50mA 50mA 120mV 50mV 120mV
combined +3.3, +5V
combined +12V
Input Voltage
90V ~ 264V
Input Frequency Range
47Hz ~ 63Hz
Active PFC£¨PF>0.95 at full load£©
87%~90%£¨20% to 100% loading£©
100,000 hours
Operating temperature
0¡ãC ~ 40¡ãC
Over power protection
Over voltage protection
Under voltage protection
Short circuit protection
1 x 24 / 20-Pin motherboard connector300mm©
1 x 8 / 4-Pin EPS / ATX 12V connector400mm©
2 x 8 / 6-Pin PCIE connector400mm / 150mm©
3 x SATA connector£¨300mm / 200mm / 100mm©
2 x 4-Pin Peripheral connector 300mm / 200mm© 
1 x 4-Pin Floppy connector300mm / 200mm / 200mm©
BlackLead-Free Paint©
Cooling System
Single 120mm silent fan
Noise Level
0 ~ 36 dBA
125 mm (W)  63.5 mm (H)  130 mm (D)
1.4 Kg
Form factor
80 PLUS Gold
Includes SFX to ATX bracket for use in ATX case 
GPU Support list 
Haswell CPU support

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