ASRock Challenger 550W Bronze Power vs ASRock PRO 750G 750W ATX (2026): Key Differences
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This comparison examines the asrock challenger power supply 550w vs pro 750g power supply. Both units use a standard ATX form factor and include a 120mm fan for cooling. They also share the same physical width and height. The main difference lies in their power delivery and efficiency. The Challenger offers 550W with Bronze efficiency. The PRO provides 750W with Gold efficiency and modern connector standards. You need to choose based on your system's wattage needs.
Key differences
| Aspect | ASRock Challenger 550W Bronze Power Supply | ASRock PRO 750G 750W ATX 3.1 Power Supply |
|---|---|---|
| Wattage | 550W | 750W |
| Efficiency Rating | 80 PLUS Bronze | 80 PLUS Gold |
| ATX Version | ATX 2.52 | ATX 3.1 |
| PCIe Version | not listed | PCIe 5.1 |
| PCIe Connector | 6+2-pin PCIe | Native 12V-2x6 |
| Warranty | 5 Years | 3 Years |
Which one should you choose?
Choose ASRock Challenger 550W Bronze Power Supply if
- You are building a mid-range system with moderate power requirements under 550W.
- You prefer a longer warranty period of five years for long-term peace of mind.
- You need a reliable unit that supports the ATX 2.52 standard for older components.
Choose ASRock PRO 750G 750W ATX 3.1 Power Supply if
- You are building a high-end system with a powerful GPU that requires more than 550W.
- You want higher energy efficiency to reduce heat and power consumption during operation.
- You need a native 12V-2x6 connector for modern graphics cards without using adapters.
Verdict: The Challenger 550W is a solid choice for budget-conscious builders who do not need high wattage or the latest PCIe standards. The PRO 750G is better suited for users with modern, power-hungry components who value higher efficiency and native connectors. Your decision should depend on the total power draw of your specific hardware.
ASRock Challenger 550W vs PRO 750G
efficiency rating
The ASRock PRO 750G holds an 80 PLUS Gold certification, delivering up to 90% efficiency. This reduces power waste and operating costs. The ASRock Challenger 550W is 80 PLUS Bronze certified, reaching up to 85% efficiency. While both units convert power effectively, the PRO 750G provides a higher efficiency tier. This means less energy is lost as heat during operation. You benefit from lower electricity usage and a cooler running system with the PRO 750G compared to the Bronze-rated Challenger.
wattage capacity
The ASRock PRO 750G offers 750W of continuous power output. This capacity supports mid-range to high-end system configurations with stability. The ASRock Challenger 550W provides 550W of continuous power, with 45.9A on the +12V rail. This supports mid-range CPUs and GPUs for gaming and productivity. If you plan to use high-performance components or plan for future upgrades, the PRO 750G provides more headroom. The Challenger is suitable for more modest builds.
atx version
The ASRock PRO 750G complies with the ATX 3.1 standard. It is also PCIe 5.1 ready, ensuring compatibility with next-generation components and improved power delivery standards. The ASRock Challenger 550W complies with ATX 2.52. This supports modern power delivery requirements for stable performance but is an older standard. If you are building with the latest graphics cards and motherboards, the PRO 750G offers better future-proofing through its newer ATX 3.1 compliance.
pcie connector
The ASRock PRO 750G features a native 12V-2x6 connector. This dual-color design supports up to 450W power delivery for modern high-performance graphics cards directly. The ASRock Challenger 550W includes two 6+2-pin PCIe connectors. These are standard connectors that may require adapters for the latest GPUs. The native 12V-2x6 port on the PRO 750G simplifies cabling for new cards. You get a cleaner build and direct power delivery without extra adapters.
warranty coverage
The ASRock Challenger 550W comes with a 5-year warranty. This provides longer protection for your investment compared to many competitors. The ASRock PRO 750G is backed by a 3-year warranty. While the PRO 750G has superior specs, the Challenger offers more years of coverage. If long-term peace of mind is your priority, the Challenger provides a two-year advantage. Both units include dedicated support through Amazon for any product questions or assistance you may require.
Choose the right PSU for your build
Users with high-end GPUs needing native connectors
The PRO 750G features a native 12V-2x6 connector. This supports up to 450W for modern graphics cards. It also holds an 80 PLUS Gold rating for 90% efficiency. ATX 3.1 compliance ensures stable power delivery for demanding components. This unit handles mid to high-end configurations with reliability and reduced energy waste.
Budget builders needing reliable mid-range performance
The Challenger 550W delivers 550W with 45.9A on the +12V rail. It supports mid-range CPUs and GPUs for gaming. The 80 PLUS Bronze certification reaches 85% efficiency. It includes a 5V BOOST function to manage transient power spikes. This non-modular unit offers a five-year warranty for long-term stability in standard builds.
Shoppers prioritizing maximum warranty coverage
The Challenger 550W provides a five-year warranty. This exceeds the three-year coverage offered by the PRO 750G. Both units use standard ATX form factors and 120mm fans. The Challenger includes comprehensive cables like SATA and Molex connectors. If long-term support is your main concern, this model offers better protection for your investment.
The products compared
ASRock Challenger 550W Bronze Power Supply
Best for: mid-range gaming and productivity builds
- Wattage
- 550W
- Efficiency Rating
- 80 PLUS Bronze
- Modularity
- Non-Modular
- ATX Version
- ATX 2.52
- PCIe Connector Type
- 6+2-pin PCIe
- Fan Size
- 120mm
View on Amazon: ASRock Challenger 550W Bronze Power Supply Affiliate link
The ASRock Challenger 550W is a non-modular power supply designed for mid-range systems. It delivers 550W of continuous power with an 80 PLUS Bronze efficiency rating. The unit features a 120mm fan and ATX 2.52 compliance. It includes essential connectors for standard builds. This unit suits users who need reliable performance for gaming or productivity without requiring modular cable management.
Pros
- 550W continuous power output
- 80 PLUS Bronze efficiency certification
- 120mm Golf-Blade fan for quiet operation
- 5-year warranty coverage
Cons
- Non-modular design limits cable management
- Lower efficiency rating than Gold options
- Only 550W capacity for high-end builds
Good fit if
- You are building a mid-range gaming PC
- You need a reliable non-modular PSU
- You prioritize 80 PLUS Bronze efficiency
Skip if
- You require modular cable management
- You need 80 PLUS Gold efficiency
- You are building a high-end system
Verdict: ASRock Challenger 550W Bronze PSU is a practical choice for mid-range builds. It offers stable power delivery and efficient operation for users who do not need modular cables.
ASRock PRO 750G 750W ATX 3.1 Power Supply
Best for: High-efficiency builds with modern GPUs
- Wattage
- 750W
- Efficiency Rating
- 80 PLUS Gold
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 120mm
- Warranty
- 3-Year
View on Amazon: ASRock PRO 750G 750W ATX 3.1 Power Supply Affiliate link
The ASRock PRO 750G is a 750W power supply with 80 PLUS Gold efficiency. It supports ATX 3.1 and PCIe 5.1 standards. The unit features a native 12V-2x6 connector for modern graphics cards. A 120mm fan keeps noise levels low. This model suits users needing stable power for mid-range to high-end systems.
Pros
- 80 PLUS Gold certification for high efficiency
- Native 12V-2x6 connector for PCIe 5.1
- ATX 3.1 and PCIe 5.1 compliance
- 750W capacity for high-end builds
- 120mm fan for quiet operation
Cons
- Shorter 3-year warranty compared to competitors
- Heavier build at 4.78 pounds
- Limited to ATX form factor
Good fit if
- You need a native 12V-2x6 connector
- You want high energy efficiency
- You are building a mid to high-end PC
Skip if
- You require a longer warranty period
- You prefer a lighter power supply
- You need a different form factor
Verdict: ASRock PRO 750G 750W Gold PSU delivers solid efficiency and modern connectivity for high-end builds. It fits users prioritizing Gold certification and native 12V-2x6 support over longer warranty terms.
Specifications side by side
| Spec | ASRock Challenger 550W Bronze Power Supply | ASRock PRO 750G 750W ATX 3.1 Power Supply |
|---|---|---|
| Wattage | 550W | 750W |
| Efficiency Rating | 80 PLUS Bronze | 80 PLUS Gold |
| Modularity | Non-Modular | not stated |
| ATX Version | ATX 2.52 | ATX 3.1 |
| PCIe Connector Type | 6+2-pin PCIe | 12V-2x6 |
| Fan Size | 120mm | 120mm |
| Warranty | 5 Years | 3-Year |
| Form Factor | ATX | ATX |
| PCIe Version | not stated | PCIe 5.1 |
| Connector | not stated | 12V-2x6 Connector |
| Size | 550B | 750W |
| Dimensions | 5.51 × 5.91 × 3.39 inches | 5.51 × 5.91 × 3.39 inches |
| Weight | not stated | 4.78 pounds |
| Color | Black | not stated |
| Model | 90-UXC055-BNUAAA | 90-UXR075-GNUAA2 |
Frequently asked questions
Which PSU is better for a mid-range gaming PC?
The ASRock Challenger 550W Bronze Power Supply is the practical choice for mid-range builds. It offers stable power delivery for users who do not need modular cables. Its 80 Plus Bronze certification ensures efficient operation for standard components. This unit fits well in systems that do not require high-end graphics card support.
Does the PRO 750G support modern NVIDIA RTX 40 series cards?
Yes, the ASRock PRO 750G includes a native 12V-2x6 connector. This feature supports up to 450W for modern graphics cards directly. It is designed for high-efficiency builds with modern GPUs. You get solid efficiency and modern connectivity without needing adapter cables for high-power components.
Are both power supplies the same physical size?
Both units share the same width and height dimensions. They are both 5.91 inches wide and 3.39 inches high. However, they differ in length and overall volume based on their wattage. The 550W model is slightly shorter than the 750W version. Both fit the standard ATX form factor for case compatibility.
Is the ASRock Challenger 550W modular?
No, the ASRock Challenger 550W is non-modular. All cables are permanently attached to the unit. This design is common for budget-friendly power supplies. It simplifies installation for users who do not need to manage excess cable lengths. You must route all included cables through your case.
Which unit has a higher efficiency rating?
The ASRock PRO 750G holds an 80 Plus Gold certification. It delivers up to 90% efficiency at typical loads. The Challenger 550W is rated 80 Plus Bronze, reaching up to 85% efficiency. Gold certification means less power waste and lower operating temperatures. This makes the PRO 750G more efficient for high-end builds.
What is the latest ATX standard for the PRO 750G?
The ASRock PRO 750G complies with the ATX 3.1 standard. It also supports PCIe 5.1 specifications. This ensures compatibility with the latest motherboard and graphics card requirements. The unit is built for users prioritizing modern connectivity and power delivery standards over older specifications.