SilverStone

Silverstone SX1000-LPT

Expert rating8.7 / 10

Wattage:: 1000 W
80 PLUS Rating:: Platinum
Modularity:: Fully Modular
ATX Standard:: ATX 2.x

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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: SilverStone Last updated: 2026-09-12

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Silverstone SX1000-LPT Review

Silverstone SX1000-LPT 1000W 80 Plus Platinum fully modular power supply, ATX 3.0 certified, SFX-L form factor, native 12V-2x6/12VHPWR connector, 3-year warranty, Enhance Electronics platform.

The Silverstone SX1000-LPT is one of the highest-density SFX-L units on the market, packing 1000W of Platinum-rated power into a chassis barely larger than a standard SFX unit. Rated 1000W at 80 PLUS Platinum (Cybenetics Platinum efficiency / A- noise), it's built on a Enhance Electronics platform with a 80mm dual ball bearing fan. Fully Modular cabling and a 130mm chassis depth make it a realistic fit for an extreme small-form-factor build pushing a flagship GPU into a Mini-ITX case, and it's backed by a 3-year warranty.

Efficiency, Noise, and Build Quality

The SX1000-LPT carries an 80 PLUS Platinum certification and a Cybenetics Platinum efficiency / A- noise rating, translating to consistently high real-world efficiency at typical 50% load and low fan noise thanks to its 80mm dual ball bearing, high static pressure. 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, 1x 12V-2x6 (600W), 4x PCIe 6+2-pin, 6x SATA, 2x Molex. With 1 native 12V-2x6 connector(s) rated to deliver up to 600W to a single GPU, there's no need for a 4x8-pin-to-12VHPWR adapter on current-generation flagship cards. 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 Seasonic Prime 1000 Platinum (Seasonic's 1000W Platinum flagship), the Silverstone SX1000-LPT 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 12V-2x6 connectors matter for your GPU. Compared with the Thermaltake Toughpower GF3 850W (Thermaltake's native-12VHPWR 850W Gold unit), the SX1000-LPT sits in the high-end/multi-GPU bracket at 1000W, so the decision usually comes down to matching wattage headroom to your actual GPU/CPU combo rather than one being categorically better.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8.7 / 10

A best-in-class 1000W Platinum-rated SFX-L unit for an extreme small-form-factor build pushing a flagship GPU into a Mini-ITX case, held back only by its premium price.

Best for

Builders targeting an extreme small-form-factor build pushing a flagship GPU into a Mini-ITX case
Anyone who wants fully modular cabling with native 12V-2x6 support
Systems where a 3-year warranty and Platinum-tier efficiency matter

Not for

Builds needing more than 1000W of continuous headroom
Buyers who need a full-size ATX chassis
Cost-sensitive builds better served by a lower-tier 80+ Bronze unit

Specifications

What these specs mean

Identity

Brand	SilverStone
Model Number	SX1000-LPT

Output and rails

+12V Rail Amperage	83.3 A
Single +12V Rail	Yes

Standards and compliance

PCIe CEM Standard	None
Hold-Up Time	18.8 ms

Efficiency and noise

Measured Avg Efficiency	90.06 %
Measured Average Noise	36.09 dBA

Connector inventory

EPS 8-pin Connectors	2
SATA Connectors	8
Molex Connectors	3

Form factor and fit

Length	130 mm
Colour	Black

Cooling

Fan Bearing	Ball

Build quality

MTBF	100000 hours

Cables

Modularity	Fully Modular
Cable Type	Flat Ribbon

Monitoring, protection and price

Protections	OCP, OPP, OVP, SCP, OTP
Price	229.99 USD
Warranty	5 years

Wattage	1000 W
80 PLUS Rating	Platinum
ATX Standard	ATX 2.x
Form Factor	SFX-L
Cybenetics Efficiency	Platinum
Cybenetics Noise	Standard+
12V-2x6 Connectors	0
Zero-RPM Mode	Yes
Sleeved Cables	No
PCIe 8-pin Connectors	6
Connector Count	1x 24-pin ATX, 2x EPS 4+4, 6x PCIe 6+2-pin, 8x SATA, 3x Molex, 1x floppy adapter
Fan Size	120 mm
Fan Model / Bearing	120mm double ball bearing (B1201512HB)
OEM / Platform	Enhance
Japanese Capacitors	Yes
Cable Lengths	24-pin 300mm, EPS 400mm, PCIe 400mm+150mm, SATA 300mm+200mm+100mm+100mm, Molex 300mm+200mm+200mm

FAQs

What are the key specifications of the Silverstone SX1000-LPT (1000W/80+ Platinum/ATX 3.0/High-End/Multi-Gpu Tier)?

Key specs for the Silverstone SX1000-LPT: Wattage 1000 W, Modularity Fully Modular, Fan Size 120 mm, Warranty 5 years, 80 PLUS Rating Platinum, Cybenetics Efficiency Platinum.

Will the Silverstone SX1000-LPT (1000W/80+ Platinum/ATX 3.0/High-End/Multi-Gpu Tier) work with my current setup?

The Silverstone SX1000-LPT (1000W/80+ Platinum/ATX 3.0/High-End/Multi-Gpu Tier) lists Wattage is 1000 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 SX1000-LPT (1000W/80+ Platinum/ATX 3.0/High-End/Multi-Gpu Tier) best suited to?

Best suited to: Builders targeting an extreme small-form-factor build pushing a flagship GPU into a Mini-ITX case; Anyone who wants fully modular cabling with native 12V-2x6 support; Systems where a 3-year warranty and Platinum-tier efficiency matter.

What are the drawbacks of the Silverstone SX1000-LPT (1000W/80+ Platinum/ATX 3.0/High-End/Multi-Gpu Tier)?

Not the best fit for: Builds needing more than 1000W of continuous headroom; Buyers who need a full-size ATX chassis; Cost-sensitive builds better served by a lower-tier 80+ Bronze unit.