SilverStone Extreme 1000W Platinum SFX Alternatives: 6 Similar Picks Compared

Latest update: October 16, 2026

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You are looking at silverstone technology extreme 1000rz platinum alternatives to find the right power supply for your build. The SilverStone Extreme 1000W SFX Platinum PSU stands out for its compact 100mm depth and Cybenetics Platinum efficiency. It supports PCIe Gen 5 with a 12V-2x6 connector and uses a 92mm FDB fan. This unit is ideal for high-end small form factor gaming builds that demand maximum power in a tight space.

You might want something else if your case requires a different size, such as the SFX-L form factor found in the SilverStone SX1000-LPT or ASUS ROG Loki. Some users may prefer a different efficiency rating like 80 Plus Titanium or Gold, or they might need a lower wattage option like the SilverStone 700W Gold. The 6 alternatives listed here were chosen because their specifications overlap with the original. This ensures you have options that match your specific needs for size, efficiency, and connectivity without compromising on quality.

Our top pick: SilverStone Extreme 1000W Platinum SFX Power Supply.

Comparing Alternative Power Supplies

SilverStone 1000W SFX-L Platinum Power Supply

The SilverStone 1000W SFX-L Platinum offers the same 1000W output but uses the larger SFX-L form factor. Its length increases to 5.12 inches, compared to the original’s 3.94 inches. This extra space allows for better airflow and potentially quieter operation under heavy loads. It holds 80 Plus Platinum certification, which is a widely recognized industry standard for efficiency. While the original relies on Cybenetics Platinum certification, this model provides a familiar efficiency benchmark. It remains fully modular, ensuring clean cable management. You should choose this if your chassis accommodates the longer SFX-L size and you prefer standard 80 Plus ratings over Cybenetics.

ASUS ROG Loki 1000W SFX-L Platinum PSU

The ASUS ROG Loki 1000W SFX-L Platinum shares the SFX-L form factor, measuring 4.9 inches wide and 4.9 inches long. It provides 1000W of power with 80 Plus Platinum efficiency. This unit is designed for ATX 3.0 graphics cards, offering native support for modern high-end GPUs. The original SilverStone also supports PCIe Gen 5, so connectivity is comparable. However, the Loki has a different physical footprint, being slightly longer than the compact original. It weighs 4 pounds, which is heavier than the original. You should pick this if you need a trusted brand reputation for SFF builds and want integrated ATX 3.0 support in a slightly larger enclosure.

EVGA Supernova 850 T2 850W Titanium PSU

The EVGA Supernova 850 T2 is a standard ATX power supply, not SFX. It measures 7.09 inches in length, making it incompatible with small form factor cases. It delivers 850W with 80 Plus Titanium efficiency, which is higher than the original’s Platinum rating. This model is fully modular and includes a 10-year warranty. It is designed for standard ATX towers where space is not a constraint. If you are building a compact PC, this unit will not fit. You should choose this only if you are upgrading to a larger case and prioritize maximum efficiency and a long warranty period over compact size.

SilverStone 700W SFX 80 Plus Gold Power Supply

The SilverStone 700W SFX Gold is a smaller power supply with 700W output. It uses the standard SFX form factor, fitting in the same cases as the original. It features 80 Plus Gold efficiency and is fully modular. The length is 4.92 inches, which is longer than the original’s 3.94 inches. This unit is ideal for builds that do not require 1000W. It offers a quieter operation for low-power systems. You should select this if your graphics card and CPU have lower power demands. It provides a cost-effective solution for compact builds that do not need the highest wattage or PCIe Gen 5 support.

SilverStone 450W SFX Bronze Power Supply

The SilverStone 450W SFX Bronze is a budget-friendly option for low-power small form factor builds. It has 450W output and 80 Plus Bronze efficiency. The form factor is SFX, but the dimensions are larger, measuring 9 inches in length. It is not fully modular, which may result in more cable clutter. This unit is suitable for office PCs or light gaming rigs with modest power requirements. You should choose this if you need a very affordable power supply for a small case and do not require high wattage or modular cables. It sacrifices efficiency and modularity for a lower price point.

SilverStone 300W SFX Bronze Power Supply

The SilverStone 300W SFX Bronze is the smallest power supply in this list. It provides 300W of power with 80 Plus Bronze efficiency. It uses the standard SFX form factor, measuring 3.94 inches in length. This unit is designed for very low-power systems, such as HTPCs or basic office computers. It lacks modularity and high-end features. You should pick this if your build has minimal power needs and you want to save space and money. It is not suitable for gaming PCs or systems with dedicated graphics cards that require more than 300W.

Quick picks

#	Product	Best for	Price
1	SilverStone Extreme 1000W Platinum SFX Power Supply Best overall	High-power small form factor gaming builds	Check price of SilverStone Extreme 1000W Platinum SFX Power Supply on Amazon
2	SilverStone 1000W SFX-L Platinum Power Supply Best premium	High-power small form factor builds	Check price of SilverStone 1000W SFX-L Platinum Power Supply on Amazon
3	ASUS ROG Loki 1000W SFX-L Platinum PSU Best atx	Small builds with high power needs	Check price of ASUS ROG Loki 1000W SFX-L Platinum PSU on Amazon
4	EVGA Supernova 850 T2 850W Titanium PSU Also great	Standard ATX cases needing high efficiency	Check price of EVGA Supernova 850 T2 850W Titanium PSU on Amazon
5	SilverStone 700W SFX 80 Plus Gold Power Supply Best 80 plus gold	Compact builds needing 700W efficiency	Check price of SilverStone 700W SFX 80 Plus Gold Power Supply on Amazon
6	SilverStone 450W SFX Bronze Power Supply Also great	compact SFF builds under 450W	Check price of SilverStone 450W SFX Bronze Power Supply on Amazon
7	SilverStone 300W SFX Bronze Power Supply Best budget	low-power SFX builds	Check price of SilverStone 300W SFX Bronze Power Supply on Amazon

Our 7 picks

Best overall

SilverStone Extreme 1000W Platinum SFX Power Supply

Best for: High-power small form factor gaming builds

Wattage: 1000W
Efficiency Rating: Cybenetics Platinum
Modularity: Fully modular
PCIe Connector Type: 12V-2x6
Fan Size: 92mm
Form Factor: SFX

View on Amazon: SilverStone Extreme 1000W Platinum SFX Power Supply Affiliate link

This Silverstone unit delivers 1000W in a compact SFX form factor. It features Cybenetics Platinum certification for high efficiency and includes a 600W PCIe Gen 5 12V-2x6 connector for modern graphics cards. The fully modular design with flexible embossed cables helps manage space in small builds. You will appreciate the 92mm FDB fan and intelligent fan deactivation for quiet operation under light loads.

Pros

1000W continuous power output at 40°C
Cybenetics Platinum efficiency certification
Includes 600W PCIe Gen 5 12V-2x6 connector
Fully modular with flexible embossed wires
Intelligent fan deactivation for low noise

Cons

92mm fan size is smaller than the 120mm fans found in some competitors
SFX form factor is more restrictive than ATX for larger cases
No mention of smart monitoring or app control features

Good fit if

You need maximum wattage in a small SFX case
You require native support for PCIe 5.0 graphics cards
You want high efficiency for continuous 24/7 operation

Skip if

You prefer larger 120mm or 140mm fans for quieter cooling
You need smart monitoring capabilities via software
Your case only supports standard ATX power supplies

Verdict: Silverstone Extreme 1000W SFX Platinum PSU is ideal for high-end SFF builds requiring PCIe 5.0 support. It fits users who prioritize compact size and high efficiency over larger fan sizes.

Best premium

SilverStone 1000W SFX-L Platinum Power Supply

Best for: High-power small form factor builds

Wattage: 1000W
Efficiency Rating: 80 Plus Platinum
Modularity: Fully Modular
Fan Size: 120mm
Form Factor: SFX
Dimensions: 5.12 × 4.92 × 2.5 inches

View on Amazon: SilverStone 1000W SFX-L Platinum Power Supply Affiliate link

This SilverStone unit delivers 1000W of continuous power in a compact SFX-L form factor. It carries an 80 Plus Platinum efficiency rating and uses a 120mm fan. The design includes fully modular cabling and Japanese capacitors for stability. It supports 24/7 operation at 50℃. You should choose this if you need high wattage in a small case without sacrificing efficiency.

Pros

1000W continuous output
80 Plus Platinum efficiency
120mm silent fan
Fully modular cables

Cons

SFX-L size may not fit standard SFX cases
Heavier at 3.06 pounds
Requires included cables only

Good fit if

You need 1000W in a small form factor
You want high efficiency ratings
You have an SFX-L compatible case

Skip if

You have a standard ATX case
You need a smaller 700W unit
You require a 1200W option

Verdict: SilverStone SX1000-LPT Platinum 1000W SFX-L offers high efficiency and power density for compact builds. It fits users who prioritize Platinum certification and 1000W output in a small chassis.

Best atx