Silverstone SX500-LG
Expert rating8.2 / 10
- Wattage:
- 500 W
- 80 PLUS Rating:
- Gold
- Modularity:
- Fully Modular
- ATX Standard:
- ATX 2.x
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Manufacturer: Silverstone Last updated: 2026-09-12
Silverstone SX500-LG (500W/80+ Gold/ATX 2.x/Compact/Mainstream Tier) Review
Silverstone SX500-LG 500W 80 Plus Gold fully modular power supply, ATX 2.x certified, SFX form factor, standard PCIe connectors, 3-year warranty, Enhance Electronics platform.
The Silverstone SX500-LG is a compact, right-sized SFX unit for HTPC and ultra-small-form-factor builds that only need a single low-to-mid-range GPU. Rated 500W at 80 PLUS Gold (Cybenetics Gold efficiency / Standard+ noise), it's built on a Enhance Electronics platform with a 80mm dual ball bearing fan. Fully Modular cabling and a 100mm chassis depth make it a realistic fit for a small-form-factor build with a single mid-range GPU, and it's backed by a 3-year warranty.
Efficiency, Noise, and Build Quality
The SX500-LG carries an 80 PLUS Gold certification and a Cybenetics Gold efficiency / Standard+ noise rating, translating to consistently high real-world efficiency at typical 50% load and low fan noise thanks to its 80mm dual ball bearing. It uses a Enhance Electronics platform, a common approach at this price point that keeps the unit affordable without meaningfully hurting day-to-day reliability.
Connectors and Cabling
Connector layout is 1x 24-pin ATX, 1x EPS 4+4, 2x PCIe 6+2-pin, 4x SATA, 2x Molex. It relies on traditional 6+2-pin PCIe connectors, so an aftermarket or bundled adapter is needed to power a 12VHPWR/12V-2x6 GPU natively. Cabling is fully modular, using standard flat or ribbon cables, with a single +12V rail design that simplifies load balancing across connectors.
Comparison to Alternatives
Against the be quiet! Straight Power 12 (be quiet!'s Platinum-rated acoustic specialist), the Silverstone SX500-LG matches its wattage class but differs on connector generation and OEM platform, making the choice mostly about brand ecosystem, warranty length (3 years here), and whether native PCIe-only connectors matter for your GPU. Compared with the Silverstone SX800-LTI (Silverstone's 800W SFX-L Titanium flagship), the SX500-LG sits in the compact/mainstream bracket at 500W, so the decision usually comes down to matching wattage headroom to your actual GPU/CPU combo rather than one being categorically better.
Specifications
Identity
| Brand | SilverStone |
|---|---|
| Model Number | SX500-LG |
| Model Number | SST-SX500-LG |
Output and rails
| +12V Rail Amperage | 40 A |
|---|---|
| Single +12V Rail | Yes |
Connector inventory
| SATA Connectors | 3 |
|---|---|
| Molex Connectors | 2 |
Form factor and fit
| Length | 130 mm |
|---|---|
| Colour | Black |
Build quality
| MTBF | 100000 hours |
|---|
Cables
| Modularity | Fully Modular |
|---|---|
| Cable Type | Flat Ribbon |
Monitoring, protection and price
| Protections | OPP, OVP, OTP, UVP, SCP |
|---|---|
| Price | 99.99 USD |
| Warranty | 3 years |
| Wattage | 500 W |
|---|---|
| 80 PLUS Rating | Gold |
| ATX Standard | ATX 2.x |
| Form Factor | SFX-L |
| Cybenetics Efficiency | Gold |
| Cybenetics Noise | Standard+ |
| 12V-2x6 Connectors | 0 |
| Zero-RPM Mode | No |
| Sleeved Cables | No |
| PCIe 8-pin Connectors | 2 |
| Connector Count | 1x 24-pin ATX, 1x EPS 4+4, 2x PCIe 6+2-pin, 3x SATA, 2x Molex, 1x floppy |
| Fan Size | 120 mm |
| Fan Model / Bearing | 120mm silent fan |
| OEM / Platform | Enhance |
| Japanese Capacitors | Yes |
| Cable Lengths | 24-pin 300mm, EPS 400mm, PCIe 400mm+150mm, SATA 300mm+200mm+100mm, Molex 300mm+200mm |
| Source URL | https://www.silverstonetek.com/en/product/info/power-supplies/SX500-LG/ |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating8.2 / 10
A solid 500W Gold-rated SFX unit for a small-form-factor build with a single mid-range GPU, held back only by the usual mid-tier compromises on cabling and OEM sourcing.
Best for
- Builders targeting a small-form-factor build with a single mid-range GPU
- Anyone who wants fully modular cabling with standard PCIe connectors
- Systems where a 3-year warranty and Gold-tier efficiency matter
Not for
- Builds needing more than 500W of continuous headroom
- Buyers who need a full-size ATX chassis
- Cost-sensitive builds better served by a lower-tier 80+ Bronze unit
FAQs
What are the key specifications of the Silverstone SX500-LG (500W/80+ Gold/ATX 2.x/Compact/Mainstream Tier)?
The Silverstone SX500-LG (500W/80+ Gold/ATX 2.x/Compact/Mainstream Tier) is a power supply from Silverstone. Key specs: Wattage 500 W, 80 PLUS Rating Gold, Cybenetics Efficiency Gold, Cybenetics Noise Standard+, Modularity Fully Modular.
Will the Silverstone SX500-LG (500W/80+ Gold/ATX 2.x/Compact/Mainstream Tier) work with my current setup?
The Silverstone SX500-LG (500W/80+ Gold/ATX 2.x/Compact/Mainstream Tier) lists Wattage is 500 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the Silverstone SX500-LG (500W/80+ Gold/ATX 2.x/Compact/Mainstream Tier) best suited to?
It suits builders targeting a small-form-factor build with a single mid-range gpu, anyone who wants fully modular cabling with standard pcie connectors, systems where a 3-year warranty and gold-tier efficiency matter.
What are the drawbacks of the Silverstone SX500-LG (500W/80+ Gold/ATX 2.x/Compact/Mainstream Tier)?
It is a poor fit for builds needing more than 500w of continuous headroom, buyers who need a full-size atx chassis, cost-sensitive builds better served by a lower-tier 80+ bronze unit.