Sirlyr 24-Pin 12VHPWR RGB Extension Alternatives: 6 Similar Picks Compared

How Each Alternative Compares

Thermaltake Smart 600W 80 Plus ATX PSU

The Thermaltake Smart 600W is a complete power supply, not just an extension cable. It provides 600W of output with Active PFC, whereas the Sirlyr kit only extends existing connections. This unit weighs 2.2 pounds and measures 8.9 inches long. You get standard ATX form factor reliability instead of customizable RGB lighting. It is ideal if you need to replace a failing unit rather than manage cable length. The dual PCIe connectors offer direct power delivery without needing adapters. Choose this if you prioritize stable power delivery and Active PFC efficiency over aesthetic cable management. It does not include the flexible silicone tubing or LED control features found in the Sirlyr kit.

CableMod C-Series ModFlex Essentials Cable Kit

The CableMod C-Series is a replacement cable kit designed specifically for Corsair RM, AXi, and HXi power supplies. It focuses on aesthetics and cable management rather than extending the 12VHPWR connection for RTX 40-series cards. This kit weighs 2.2 pounds and comes in a Yellow-RED color scheme. Unlike the Sirlyr RGB kit, it does not include integrated LEDs or a controller for lighting effects. It is best for users who already own a compatible Corsair PSU and want to improve the visual look of their build. It does not solve the length issue for 24-pin or 12VHPWR cables directly. Pick this if you need high-quality braided cables for a specific PSU brand and do not require RGB synchronization.

FOSA 350W Fanless Mini ITX DC Power Supply

The FOSA 350W is a fanless Mini ITX power supply designed for silent, compact builds. It weighs only 7.88 ounces and measures 6.06 inches long. This is a complete power unit, not an extension cable like the Sirlyr option. It lacks the RGB lighting and cable extension features entirely. Instead, it offers a fanless design to eliminate noise, which is crucial for small form factor cases. The 350W output is lower than the Sirlyr kit's implied role in a high-power system. Choose this if you need a quiet, small PSU for a Mini ITX build. It does not help with cable length or aesthetic lighting for RTX 40-series graphics cards. It is a functional replacement rather than an accessory.

Professional Angle 250W Dell Replacement PSU

The Professional Angle 250W is a replacement power supply for legacy Dell desktops like Optiplex and Inspiron towers. It weighs 1.65 pounds and measures 6.7 inches long. This unit is built for specific OEM connector layouts and wattage requirements. It does not offer RGB lighting, cable extension, or 12VHPWR support for modern graphics cards. It is strictly for repairing or replacing a broken PSU in older Dell systems. The 250W output is insufficient for modern gaming PCs with RTX 40-series cards. Pick this only if you are maintaining a specific Dell desktop model. It provides no aesthetic benefits or cable management solutions. It is a functional, proprietary replacement rather than a versatile PC building accessory.

Segotep 650W 80 Plus Gold ATX Power Supply

The Segotep 650W is an 80 Plus Gold certified ATX power supply. It weighs 3.43 pounds and measures 5.91 inches long. This is a complete power unit, not an extension cable. It offers high efficiency and standard PCIe connectivity, unlike the Sirlyr kit which focuses on aesthetics and length. The 120mm fan size is standard for ATX cases. It does not include RGB lighting or flexible silicone tubing. Choose this if you need a reliable, efficient power source for a standard ATX build. It does not solve cable length issues for 24-pin or 12VHPWR connections. It is a practical choice for builders prioritizing efficiency ratings and stable power delivery over customizable lighting effects.

ARESGAME 600W 80 Plus Bronze ATX Power Supply

The AREGSGAME 600W is an 80 Plus Bronze certified ATX power supply. It weighs 3.43 pounds and measures 5.9 inches long. This is a complete power unit, not an extension cable. It provides dependable 600W output with standard protections. Unlike the Sirlyr kit, it does not offer RGB lighting or cable extension features. The 120mm fan fits standard cases. It is ideal for budget-conscious builders who need reliable power for mid-range gaming PCs. It does not help with cable management or aesthetic customization for RTX 40-series cards. Pick this if you need a cost-effective power supply with Bronze efficiency. It lacks the flexible tubing and LED control options found in the Sirlyr RGB kit.

Quick picks

Our 7 picks

1 Best overall

Sirlyr 24-Pin and 12VHPWR RGB Extension Cable Kit

Best for: RTX 40-series builds needing RGB lighting

PCIe Connector Type

12VHPWR

Form Factor

ATX

Device Compatibility

PCs

Dimensions

11 × 2 × 0.7 inches

Weight

15.8 ounces

View on Amazon: Sirlyr 24-Pin and 12VHPWR RGB Extension Cable Kit Affiliate link

This Sirlyr kit extends your PSU cables for better case management. It includes a 24-pin ATX cable and a 12VHPWR cable that splits into three 8-pin connectors. The design supports RTX 40-series graphics cards. Each cable features integrated LEDs for customizable lighting. The set includes a SATA-powered RGB controller for systems with limited motherboard headers. It is ideal for builders who want longer cables and visual flair.

Pros

• 12VHPWR cable splits into three 8-pin female connectors
• Includes 24-pin ATX extension cable
• Integrated RGB LEDs on both cables
• Comes with SATA-powered RGB controller

Cons

• Requires motherboard 3-pin ARGB header or SATA power for lighting
• Heavier at 15.8 ounces compared to standard cables
• Cable length is fixed at 11 inches

Good fit if

• You need longer cables for your 24-pin or GPU connections
• You want to use an RTX 40-series graphics card
• You prefer customizable RGB lighting effects

Skip if

• You require a single 12VHPWR cable without splitting
• You need a fanless or silent power supply unit
• You prefer non-RGB standard cables

Verdict: Sirlyr RGB 12VHPWR to 3x8 Pin Extension offers a practical solution for extending cables and adding lighting to RTX 40-series builds. It fits users who value cable management and aesthetic customization over minimal weight.

2 Best budget

Thermaltake Smart 600W 80 Plus ATX PSU

Best for: Active PFC and dual PCIe connectors

Wattage

600W

Efficiency Rating

80 PLUS Certified

PCIe Connector Type

6 plus 2pin

Warranty

5 Year

Form Factor

ATX

Power Factor Correction

Active PFC

View on Amazon: Thermaltake Smart 600W 80 Plus ATX PSU Affiliate link

This Thermaltake unit delivers 600W continuous output at 40°C. It features Active PFC for stable voltage and 80 PLUS certification for 80% efficiency. The design includes dual PCIe 6+2pin connectors and comprehensive protections like OVP and SCP. With a 100,000-hour MTBF, it offers reliable power for standard ATX systems requiring steady 12V rail performance.

Pros

• 600W continuous output at 40°C
• Active PFC for power factor correction
• 80 PLUS efficiency certification
• Dual PCIe 6+2pin connectors
• 100,000-hour MTBF rating

Cons

• Only 80 PLUS certified, not Gold or higher
• Fixed 16ms hold-up time at 60% load
• Single 4-inch fan size may be louder

Good fit if

• You need Active PFC for stable voltage
• You require dual PCIe 6+2pin connectors
• You want 80% efficiency under typical load

Skip if

• You need silent fanless operation
• You require modular cabling
• You want 80 PLUS Gold efficiency

Verdict: Thermaltake SMART 600W ATX PSU suits users who prioritize Active PFC and dual PCIe connectors for standard builds. It is a practical option for those needing reliable 600W output with standard efficiency ratings.

3 Also great

CableMod C-Series ModFlex Essentials Cable Kit

Best for: Corsair RM/AXi/HXi owners seeking cable aesthetics

Dimensions

3.94 × 3.94 × 3.94 inches

Weight

2.2 pounds

View on Amazon: CableMod C-Series ModFlex Essentials Cable Kit Affiliate link

The CableMod C-Series ModFlex Essentials is a modular cable kit designed for Corsair AXi, HXi, and RM series power supplies. It features a distinctive yellow-red color scheme and measures 3.94 inches in width, height, and length. The package weighs 2.2 pounds. This kit offers irreproachable manufacturing quality for users seeking exceptional immersion and a clean build. It is a practical solution for custom cable management rather than a power supply unit itself.

Pros

• Compatible with Corsair AXi, HXi, and RM series PSUs
• Distinctive yellow-red colorway for visual customization
• Compact 3.94-inch dimensions for easy routing
• Lightweight 2.2-pound build for minimal strain

Cons

• Not a power supply unit; requires an existing compatible PSU
• Limited to specific Corsair AXi, HXi, and RM series models
• No mention of 12VHPWR or 16-to-8-pin adapter support in specifications

Good fit if

• You own a Corsair AXi, HXi, or RM series power supply
• You want to customize the look of your internal cabling
• You need a compact cable solution for small form factor builds

Skip if

• You are looking for a standalone power supply unit
• You have a non-Corsair power supply
• You need a 12VHPWR extension cable for modern GPUs

Verdict: CableMod ModFlex Essentials 3.94 in Cable Kit is a specialized accessory for Corsair PSU owners who prioritize aesthetic customization over power delivery. It fits users who already have a compatible unit and want to improve cable management. It is not a replacement for a power supply.

4 Also great

FOSA 350W Fanless Mini ITX DC Power Supply

Best for: silent small form factor PC builds

Wattage

350W

Form Factor

Mini ITX

Device Compatibility

PCs

Dimensions

6.06 × 1.38 × 0.79 inches

Weight

7.88 ounces

View on Amazon: FOSA 350W Fanless Mini ITX DC Power Supply Affiliate link

This FOSA unit is a 350W Mini ITX power supply designed for small form factor builds. It features a fanless design for silent operation and delivers 85%+ efficiency. The compact dimensions of 6.06 x 1.38 x 0.79 inches fit tight spaces. It includes overvoltage and short circuit protection. This unit suits users prioritizing silence and compactness over high wattage.

Pros

• Fanless design ensures completely silent operation
• Ultra-compact Mini ITX form factor fits tight spaces
• Built-in overvoltage and short circuit protection
• 85%+ efficiency for stable power output

Cons

• 350W wattage is lower than standard ATX units
• No active cooling limits high-load performance
• Fixed output voltage lacks adjustable settings

Good fit if

• You need a silent power supply for a quiet office
• You are building a small form factor PC
• You prioritize compact size over high wattage

Skip if

• You require high wattage for gaming rigs
• You need active cooling for thermal management
• You want adjustable voltage settings

Verdict: FOSA 350W Fanless Mini ITX PSU is a quiet, compact solution for small builds. It fits users who value silence and size over raw power capacity.

5 Also great

Professional Angle 250W Dell Replacement PSU

Best for: Replacing OEM Dell desktop power supplies

Wattage

250W

Dimensions

6.7 × 3.35 × 2.6 inches

Weight

1.65 pounds

View on Amazon: Professional Angle 250W Dell Replacement PSU Affiliate link

This 250W power supply replaces units in select Dell Optiplex and Inspiron desktops. It provides a 24-pin ATX connector, a 4-pin ATX connector, and three SATA power connectors. The unit measures 6.7 inches long and weighs 1.65 pounds. It accepts 100-240V AC input. This PSU is designed specifically for legacy Dell systems requiring a direct replacement.

Pros

• 250W max output capacity
• Includes 24-pin ATX power connector
• Includes 4-pin ATX power connector
• Provides three SATA power connectors

Cons

• Low 250W wattage limits modern GPU use
• Proprietary Dell form factor restricts compatibility
• Lacks standard modular cable options

Good fit if

• You need a replacement for a Dell Optiplex 390, 790, or 990
• You are repairing an Inspiron 537s, 540s, or 545s desktop
• Your system requires a 250W internal power supply unit

Skip if

• You are building a custom PC with standard ATX cases
• You need to power a modern discrete graphics card
• You require high wattage for gaming or heavy workloads

Verdict: Professional Angle 250W PSU for Dell Desktops is a direct replacement for specific legacy Dell systems. It fits users repairing Optiplex or Inspiron towers who need the exact connector layout and wattage for their original motherboard design.

6 Best premium

Segotep 650W 80 Plus Gold ATX Power Supply

Best for: Standard ATX builds needing high efficiency

Wattage

650W

Efficiency Rating

80 Plus Gold

Modularity

Non-Modular

PCIe Connector Type

6+2 Pin

Fan Size

120mm

Form Factor

ATX

View on Amazon: Segotep 650W 80 Plus Gold ATX Power Supply Affiliate link

This Segotep power supply delivers 650W of power with 80 PLUS Gold efficiency. It features a non-modular design and a 120mm fan. The unit includes four PCIe 6+2 pin connectors, supporting modern graphics cards. It offers global voltage adaptation for worldwide use. You should consider this unit if you need a reliable, efficient power source for a standard ATX build without the complexity of modular cabling.

Pros

• 80 PLUS Gold efficiency rating
• Four PCIe 6+2 pin connectors
• Global voltage adaptation
• Single 12V output for stability

Cons

• Non-modular design increases cable clutter
• No 12VHPWR native connector included
• Fixed cable length limits case compatibility

Good fit if

• You want high efficiency for lower heat
• You need four PCIe connectors for GPUs
• You prefer standard ATX form factors

Skip if

• You require fully modular cabling
• You need native 12VHPWR support
• You have a small ITX case

Verdict: Segotep 650W ATX Gold PSU is a solid choice for builders prioritizing efficiency and standard PCIe connectivity over cable management flexibility.

7 Best 80 plus bronze

ARESGAME 600W 80 Plus Bronze ATX Power Supply

Best for: budget mid-range gaming PCs

Wattage

600W

Efficiency Rating

80 PLUS Bronze

Fan Size

120mm

Dimensions

5.9 × 5.5 × 3.3 inches

Weight

3.43 pounds

View on Amazon: ARESGAME 600W 80 Plus Bronze ATX Power Supply Affiliate link

The ARESGAME AGW600 is a 600W power supply certified for 80 PLUS Bronze efficiency. It features a 120mm fan for cooling and includes full protection circuits like OVP and UVP. This unit suits builders who need reliable voltage output and standard ATX compatibility. It is a practical option for gaming PCs that do not require higher wattage or gold-tier efficiency.

Pros

• 80 PLUS Bronze certification for 85% efficiency
• 120mm silent fan for cooling
• Full protection including OVP, UVP, OPP, and SCP
• Standard 600W output capacity

Cons

• Bronze efficiency rating is lower than Gold options
• 120mm fan is larger than some compact builds prefer
• No mention of modular cable management

Good fit if

• You need a reliable 600W source for mid-range builds
• You want standard 80 PLUS Bronze efficiency
• You require full electrical protection circuits

Skip if

• You need higher than 600W output
• You require Gold or higher efficiency
• You need fully modular cables

Verdict: ARESGAME 600W Bronze PSU is a solid choice for budget-conscious builders who need dependable 600W output and standard protections. It fits well in cases where a 120mm fan fits and Bronze efficiency is sufficient.

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