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The Challenger series is crafted for value-conscious users, offering 80 PLUS Gold models in 850W, 750W, and 650W options, as well as 80 PLUS Bronze models in 750W, 650W, and 550W.
Full suite of protections to keep all components safe during normal to extreme power levels.
ASRock offers an outstanding 5 - Year warranty, guaranteeing long term reliable and peace of mind operation.
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The ASRock Challenger CL-550B is a 550W ATX non-modular power supply with 80 PLUS Bronze efficiency, suited for budget gaming or everyday desktop builds that need standard CPU and dual PCIe GPU power without moving into higher-wattage systems.
| Attribute | Value |
|---|---|
| Best For | Mid-range ATX desktop builds that need up to 550W output and modest discrete GPU support (includes two 6+2 PCIe connectors); suited to standard ATX cases where non-modular fixed cables are acceptable |
| Power And Efficiency | 550W output with 80 PLUS Bronze energy efficiency |
| Connectors And Cables | Fixed (non-modular) cable set with 24‑pin ATX, 8‑pin (4+4) EPS CPU, two 6+2‑pin PCIe connectors and four SATA power connectors |
| Cooling And Fans | Single 120 mm fan for active cooling |
| Mechanical And Dimensions | ATX form factor, black housing; unit dimensions 14 x 15 x 8.6 cm; package dimensions 9.906 x 19.812 x 27.1018 cm; package weight 2.232 kg |
| Electrical Input | AC input range 110–240 V |
| Packaging And Contents | Sold as a single unit (package quantity 1); package dimensions 9.906 x 19.812 x 27.1018 cm and weight 2.232 kg |
| Model Identifiers | ASRock CL-550B; manufacturer model number 90-UXC055-BNUAAA; also referenced as CL-550B / 550B |
| Compatibility | Designed for personal computers / ATX systems using standard ATX and PCI Express connector types |
| Design | Non-modular (fixed-cable) ATX power supply design |
Q: Should I buy the ASRock Challenger CL-550B or a Corsair CX550?
A: Choose the ASRock Challenger CL-550B when you want a straightforward 550W Bronze PSU for a value-focused build and its connector set matches your system. Choose the Corsair CX550 when you want a similarly rated unit with more established third-party validation and a larger 140mm fan. Both are non-modular 80 Plus Bronze models with 5-year warranties, so the practical decision is usually price, brand preference, and how much weight you place on independent review coverage.
Q: Is the ASRock Challenger CL-550B enough for a budget gaming PC, or should I move up to 650W?
A: The CL-550B is the better fit for mainstream builds with midrange CPUs and GPUs that stay comfortably within a 550W power budget, such as many RTX 4060 or RX 7600 class systems. Moving up to 650W makes more sense if you expect a stronger GPU upgrade, want more power headroom, or plan to run parts that create higher transient loads. In short: 550W fits a present-focused budget build, while 650W is the safer choice for upgrade flexibility.
Q: How does the ASRock Challenger CL-550B compare with the MSI MAG A550BN?
A: These two PSUs target the same buyer: an entry-level or value-oriented ATX build that needs 550W, 80 Plus Bronze efficiency, two PCIe power connectors, and a 5-year warranty. The MSI MAG A550BN has clearer public product-positioning details, including DC-DC design and listed protections, plus meaningful third-party test coverage. The ASRock CL-550B is the simpler pick when pricing or availability is better, but the MSI is easier to validate through published review data.
Q: Should I choose the ASRock Challenger CL-550B or spend more for a Gold or modular PSU?
A: Choose the CL-550B if your goal is a cost-efficient build and you do not mind fixed cables. Spend more for a Gold or modular PSU if you care more about cable management, potentially higher efficiency, or building around future upgrades and higher-end components. The trade-off is simple: the CL-550B prioritizes baseline function and price, while higher-tier models prioritize convenience, efficiency, and longer-term platform flexibility.
Q: Is the ASRock Challenger CL-550B a good fit for a budget gaming or everyday desktop build?
A: Yes for entry-level to midrange ATX desktop builds. Its 550W output, 80 PLUS Bronze efficiency, and standard ATX format make it suitable for mainstream CPUs and a single midrange GPU. It is a practical choice when low cost matters more than premium efficiency, modular cabling, or newer high-end power standards.
Q: Will this power supply work with my motherboard and graphics card connectors?
A: Usually yes for a standard ATX build. The CL-550B includes a 24-pin ATX motherboard connector, one 8-pin 4+4 CPU connector, and two 8-pin 6+2 PCIe connectors for graphics cards. That covers many mainstream boards and single-GPU systems, but you should still verify your exact GPU power requirement and total cable count before buying.
Q: Will this PSU fit any desktop case or prebuilt PC?
A: No. It is a standard ATX power supply, so it should fit many ATX and mid-tower cases, but it may not fit systems that use proprietary power supplies or smaller formats such as SFX-only designs. It is especially important to confirm fit before buying for OEM prebuilts from brands like Dell or HP.
Q: What are the main trade-offs versus a semi-modular or Gold-rated PSU?
A: The main trade-offs are cable management and efficiency. The CL-550B is non-modular, so unused cables stay attached and can make a build less tidy. Its 80 PLUS Bronze rating is also less efficient than Gold models, which can run a bit cooler and waste less power. In return, Bronze non-modular units are usually the lower-cost option for basic builds.
Q: Who is this PSU not ideal for?
A: It is not the best choice for high-end GPUs, compact SFX builds, or users who want newer features such as modular cabling or PCIe 5.x power support. It is also limited to four SATA connectors, so it is less suitable for storage-heavy systems. This model is best viewed as a basic ATX PSU for cost-focused mainstream builds rather than an upgrade path for enthusiast hardware.
Q: Who is the ASRock Challenger CL-550B 550W best suited for?
A: It is best suited for entry-level to mid-range desktop builds that need a basic ATX power supply with moderate GPU support. Based on repeated Reddit build lists, it is commonly paired with cards like the RX 6600, Arc A750, and RTX 3060, which fits the product’s 550 W output and two 6+2 PCIe connectors. It is a practical fit for budget gaming or general-purpose PCs, not for high-power or upgrade-heavy builds.
Q: Is the CL-550B worth buying for a budget PC build?
A: Yes, if your goal is a low-cost build and you do not need premium features. Reddit discussions repeatedly include it in cost-focused parts lists around the $40 to $50 range, which suggests it is mainly chosen for price efficiency. The trade-off is that it is an 80 Plus Bronze, non-modular unit, so it is more about keeping total build cost down than maximizing efficiency, cable management, or headroom.
Q: What are the main trade-offs of choosing this power supply?
A: The main trade-offs are lower efficiency than Gold-rated models, fixed cables because it is non-modular, and less upgrade margin than 650 W or higher units. That makes it reasonable for simpler builds, but less ideal if you want cleaner cable routing, quieter higher-efficiency operation, or flexibility for future higher-power GPUs.
Q: Is 550W enough for a gaming PC with this PSU?
A: Usually yes for mainstream gaming builds, as long as the rest of the system is modest. Community build examples repeatedly pair this unit with mid-range GPUs rather than high-end cards, which matches its 550 W capacity and connector set. It is a better fit for systems built around efficiency and value than for power-hungry GPUs or major future upgrades.
