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    ASRock Steel Legend SL-1200GW 1200W 80 PLUS GOLD & Cybenetics PLATINUM Full Modular Power Supply, ATX3.1 & PCIe5.1 Ready with Dual Color 12V-2x6 Cable, 10 Years Warranty, White Edition

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    • 1000W
    • 850W
    • 750W
    • 650W
    • 850W (White)
    • 1200W
    • 1200W (White)
    • 1000W (White)
    • PLATINUM 1000W
    • PLATINUM 1200W
    • PLATINUM 850W
    • 80 PLUS® GOLD Certified
    • Cybenetics PLATINUM and LAMBDA A Certified
    • ATX3.1 & PCIe5.1 Ready
    • Fully Modular Cable Design
    • Native 12V-2x6 Connector Dual Color Design
    • 100% Highly Reliable Japanese Capacitors
    • 135mm Striped Axial FDB Fan
    • iCool Intelligent Fan Control Mode
    • Built-in 5V BOOST function
    • Remarkable 10-Year Warranty
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    +
    Overview
    Specs
    Reviews (319)
    SL
    DualColorDesign
    iCOOLIntelligentMode
    80PLUS
    CybeneticsLambda
    SL
    DualColorDesign
    iCOOLIntelligentMode
    80PLUS
    CybeneticsLambda

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 10 years
    • Limited Warranty period (labor): 10 years
    • Read full details

    Return Policies

      We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.

    • Return for refund until: January 31, 2027
    • Return for replacement until: January 31, 2027
    • This item is covered by Newegg.ca's Extended Holiday Return Policy.
    • Read full return policy for details.
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    The ASRock Steel Legend SL-1200GW is a 1200W full-modular ATX 3.1 power supply built for high-end gaming PCs and creator systems that need strong power headroom, native 12V-2x6 support, and clean white-themed cable management.

    Recommended For

    • Builders putting together a high-end gaming or creator PC with one flagship GPU who want ATX 3.1 support, native 12V-2x6 cabling, and enough headroom to avoid replacing the PSU on the next GPU upgrade.
    • White-theme PC builders who specifically want a 1200W PSU that matches an all-white build without moving into a more expensive boutique-looking unit.
    • Users planning dual-connector next-gen GPU setups or otherwise valuing cable readiness, since this model is repeatedly noted for including two native 12V-2x6 leads rather than relying on adapters.
    • Builders who care about a quieter high-wattage system for long gaming, rendering, or workstation sessions and want a PSU positioned around low-noise operation and semi-passive fan behavior.
    • Enthusiasts who want 1200W capacity in a standard 150mm-deep PSU because they are fitting a high-power build into a case that may not handle longer premium power supplies comfortably.

    Real-World Use Scenarios

    • Building a white high-end gaming PC with a current flagship GPU: the all-white housing and cables help match the rest of the build, while the native 12V-2x6 support reduces the need for adapters and usually makes cable routing cleaner.
    • Upgrading to an ATX 3.1 system for newer GPUs: buyers moving from an older PSU can use this to avoid adapter-based setups, and the expected experience is more straightforward compatibility with modern PCIe 5.x graphics cards.
    • Running a gaming or creator PC with a power-hungry CPU and GPU under long sessions: the practical outcome is stable operation with enough headroom for transient spikes, which is the main reason people step up to a 1200W ATX 3.1 unit.
    • Putting together a showcase PC where clean cabling matters as much as performance: the fully modular design means builders can install only the leads they need, so the system usually ends up less cluttered and easier to manage.
    • Using the PC for mixed daily work and gaming in a quiet room: at lighter loads, the semi-passive fan mode is intended to keep noise down, so the PSU is less likely to be the first component you hear outside of heavy gaming or rendering.
    • Choosing a PSU for a build you plan to keep through multiple GPU upgrades: the likely experience is fewer replacement headaches later, because a 1200W ATX 3.1 platform with native modern GPU power connectors is aimed at longer upgrade cycles.

    Spec Summary

    AttributeValue
    Best For1200 W full-modular power supply for personal computers that require up to 1200 W of DC output; suited for high-power desktop builds that need a full-modular PSU
    Power And Efficiency1200 W output with 80 PLUS GOLD energy-efficiency certification
    Design And CoolingFull-modular construction with air cooling using one internal fan
    Connectors And CompatibilityIncludes ATX and PCI Express cable connectors and 6+2-pin PCIe connector(s) (quantity: 2) for use with desktop PCs
    ElectricalMaximum input voltage rated at 240 V AC
    Physical Dimensions & WeightChassis measures 5.9 x 5.9 x 3.39 inches; package dimensions 13.1064 x 18.6944 x 30.8102 cm and package weight 3.638 kg; color: White
    Model IdentifiersASRock SL-1200GW (alternate model number 90-UXS120-GFUABA), style name 1200GW
    PackagingSold as a single unit (package quantity: 1)

    Reference Q&A

    Q: Should I buy the ASRock SL-1200GW or a 1000W ATX 3.1 PSU?

    A: Choose the ASRock SL-1200GW if you are building around a power-hungry GPU such as an RTX 5090, expect transient spikes, want more upgrade headroom, or prefer a native 12V-2x6 setup with extra margin. A quality 1000W ATX 3.1 PSU is still a practical choice for many single-GPU systems, including many RTX 4090 and some RTX 5090 builds, if the rest of the system is not unusually power heavy. The main trade-off is capacity versus cost and efficiency at your typical load: 1200W gives more electrical headroom, while 1000W is often enough for mainstream high-end gaming builds.

    Q: Is the ASRock SL-1200GW a better fit than the Corsair RM1200x SHIFT for a white build?

    A: Pick the ASRock SL-1200GW if you want a conventional ATX power supply layout that is easier to fit across more cases, while still getting a white finish, ATX 3.1 support, and native 12V-2x6 connectivity. Pick the Corsair RM1200x SHIFT if your case supports side-mounted PSU connectors and you specifically want easier cable access from the side panel area. The trade-off is installation flexibility versus cable-routing convenience: the ASRock follows the standard rear-connector layout, while the Corsair SHIFT design can be cleaner but depends more on case clearance.

    Q: How does the ASRock SL-1200GW compare with other white 1200W Gold ATX 3.1 PSUs?

    A: The ASRock SL-1200GW makes the most sense when you want a white 1200W unit with standard cabling, ATX 3.1 and PCIe 5.1 readiness, and a native 12V-2x6 cable without moving into a more specialized layout. Review coverage around this model positions it as a value-oriented high-wattage option, and one hands-on comparison found it very close in price, fitment, and performance to the white Sama P1200, making price and brand preference the deciding factors. The trade-off is simple: if another white 1200W model is similarly priced and better matches your case or cabling preferences, either can make sense; otherwise, the ASRock is a straightforward fit for standard full-size builds.

    Q: Should I upgrade from an older ATX 3.0 or non-ATX 3.1 PSU to the ASRock SL-1200GW?

    A: Upgrade to the ASRock SL-1200GW if you are moving to newer high-draw GPUs and want native 12V-2x6 support, current ATX 3.1 compliance, and a fresh cable set designed for the newer connector standard. If your existing PSU is already a recent, high-quality ATX 3.0 or ATX 3.1 model with sufficient wattage, the upgrade is less about raw performance and more about connector preference, age, and headroom. The main benefit of the ASRock unit is reducing adapter dependence and adding capacity margin for newer flagship GPUs.

    Q: Is the ASRock SL-1200GW worth it over a lower-wattage PSU for a standard gaming PC?

    A: For a standard gaming PC with a midrange or upper-midrange GPU, a lower-wattage quality PSU is usually the more practical choice. The ASRock SL-1200GW is the better fit when the system is built around very high GPU power draw, heavy CPU loads, future GPU upgrades, or a preference for extra power overhead. In other words, this unit is aimed more at headroom and flagship-class builds than at minimizing PSU size or cost for mainstream gaming.

    Q: Is this 1200W PSU a good fit for a modern high-end gaming PC with an RTX 40 or RTX 50 series GPU?

    A: Yes. This model is a strong fit for high-end gaming or workstation builds that use a power-hungry GPU and benefit from extra headroom. Its 1200W capacity, ATX 3.1 support, PCIe 5.1 readiness, and native 12V-2x6 cable align with the same buying concerns seen on competitor retail Q&A pages, where shoppers repeatedly ask about readiness for newer GPUs. It is likely more power than most mid-range systems need, but it makes sense for flagship-class GPUs, heavy CPU loads, or upgrade headroom.

    Q: Does it include the new 12V-2x6 GPU cable, or would I need an adapter?

    A: It should not require a GPU power adapter for compatible new-generation graphics cards. The provided product data states that it is ATX 3.1 and PCIe 5.1 ready and includes a native dual-color 12V-2x6 cable. That matters because one of the most repeated PSU retail questions is whether a unit uses the newer 12V-2x6 connection or the older 12VHPWR style. For buyers who want a direct native connection instead of adapter-based wiring, this is a meaningful advantage.

    Q: Can I reuse modular cables from my old power supply with this one?

    A: No. You should use only the cables that ship with this PSU. Cross-brand and even cross-model modular PSU cables are not safely interchangeable in many cases, and retail Q&A pages repeatedly warn buyers not to move old modular cables to a new unit. If you are replacing another PSU, plan to re-cable the system rather than reusing the previous power leads.

    Q: Who is this power supply suitable for, and who should skip it?

    A: This PSU is best for enthusiast builders who want a white, fully modular 1200W unit for a high-end gaming PC, creator workstation, or upgrade-heavy build. It is less suitable for mainstream systems that use midrange CPUs and GPUs, because those builds usually do not need 1200W and can often save money with an 850W or 1000W model. The main trade-off is buying more capacity and future headroom than many users will realistically use.

    Q: What are the main trade-offs versus another white 1200W ATX 3.1 power supply?

    A: The main trade-offs are efficiency tier, noise tuning, physical fit, and feature extras. This ASRock model offers 80 Plus Gold, Cybenetics Platinum efficiency certification, full modular cabling, a native 12V-2x6 cable, and a 10-year warranty, which makes it competitive for a white high-watt build. A competing white 1200W model may offer higher advertised 80 Plus Platinum efficiency or different silent-mode behavior, but may also differ in size, cable flexibility, or price. Buyers should compare based on case clearance, GPU connector needs, acoustic preference, and whether 1200W is truly necessary.

    Q: Who is the ASRock SL-1200GW best suited for?

    A: The ASRock SL-1200GW is best suited for high-end desktop builds that need a large power budget, modern GPU power support, and a white PSU. Based on repeated Reddit build lists, it is mainly being chosen for enthusiast gaming and editing PCs rather than mainstream systems. Its 1200W capacity, full modular design, and ATX 3.1 / PCIe 5.1 support make more sense for power-hungry GPUs and upgrade-focused builds than for midrange PCs.

    Q: Is the ASRock SL-1200GW worth buying for a typical gaming PC?

    A: Usually only if your build actually needs this much headroom. Reddit discussions show the 1200W model appearing mostly in expensive, high-performance part lists, which suggests buyers see it as a fit for premium systems rather than standard gaming PCs. For a typical midrange or upper-midrange gaming build, 1200W is often more capacity than necessary, so the main reasons to choose it are future upgrades, a flagship GPU, or a preference for this white ATX 3.1 design.

    Q: Is the ASRock SL-1200GW a sensible choice for next-gen GPUs and upgrade-heavy builds?

    A: Yes, if you want a PSU designed around newer power standards and extra headroom. The product information confirms ATX 3.1, PCIe 5.1 readiness, and a native 12V-2x6 cable, which directly addresses a common buyer concern around modern GPU compatibility. Community discussion and video coverage also frame this model as a high-capacity option for demanding, newer hardware rather than a budget PSU.

    Q: What are the main trade-offs of choosing the ASRock SL-1200GW?

    A: The main trade-off is buying more PSU than many systems need. Its advantages are clear: 1200W capacity, full modular cabling, white styling, modern GPU connector support, and a 10-year warranty. The downside is that buyers with lower-power builds may pay for unused headroom and a larger-tier PSU class when a lower wattage model could be enough.

    Q: Is the ASRock SL-1200GW a good pick if you are unsure about ASRock power supply reliability?

    A: It can be a reasonable option, but the public discussion is still limited compared with long-established PSU lines. Reddit comments about ASRock PSUs are generally cautious-to-positive and often point shoppers toward checking third-party PSU rankings rather than relying on brand reputation alone. A practical decision view is that the SL-1200GW has strong on-paper features, but buyers who want a long track record of user feedback may prefer a more proven series.