CORSAIR SF1000 (2024) Fully Modular Low Noise 80 Plus Platinum ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Ready – SFX-to-ATX Bracket Included – Black
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AI Verdict
This 1000-watt, 80 PLUS Platinum SFX power supply with ATX 3.1 and PCIe 5.1 compliance is for compact, high-power PC builds needing a 92mm fan and fully modular Type-5 cables.
This 1000-watt SFX power supply is a strong fit for high-performance Small Form Factor (SFF) builds due to its compact 100mm x 125mm x 63.5mm dimensions and ATX 3.1/PCIe 5.1 compliance. Its 80 PLUS Platinum efficiency and 105°C rated Japanese capacitors support demanding systems in confined spaces.
If you need more power for an even more extreme SFF build, look for SFX-L form factor PSUs, but be aware they are physically longer and might not fit all compact cases.
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Pros
- Delivers 1000 watts in a compact SFX form factor, measuring 100mm x 125mm x 63.5mm.
- Compliant with ATX 3.1 and PCIe 5.1 standards, including a 12VHPWR GPU cable for modern graphics cards.
- Features a fully modular design with Type-5 Micro-Fit connectors for streamlined cable management.
- Operates with a 92mm PWM fan that supports Zero RPM Mode for silent operation at low to medium loads.
- Built with 105°C rated Japanese capacitors, ensuring unwavering power and reliability.
- Includes an SFX-to-ATX bracket, allowing installation in larger cases.
Cons
- Cables are shorter than standard ATX PSUs, potentially requiring extensions for larger case installations.
- Uses Type-5 connectors that are not compatible with older Corsair Type-4 cables, which can cause damage if mixed.
- The 92mm fan can reach 40 dB at 100% load, which some users might notice under extreme system stress.
- 1000 watts might be excessive for less demanding PC configurations, potentially leading to higher cost for unused capacity.
Dimension Scores
The 80 PLUS Platinum and Cybenetics Platinum ratings indicate exceptional power efficiency, and it delivers a full 1000 watts in a compact SFX form factor.
The 92mm PWM fan with Zero RPM Mode ensures silent operation at low to medium loads, only reaching 40 dB at 100% output.
Constructed with 105°C rated Japanese capacitors and designed for 50°C continuous operating temperatures, it offers high durability and stable power delivery.
Its fully modular design with flexible Type-5 Micro-Fit cables aids in tidy cable routing, though the shorter cable lengths are optimized for SFX cases.
Best For
- Small Form Factor (SFF) PC builds with high-end CPUs and GPUs requiring 1000 watts.
- Users building with the latest PCIe 5.1 graphics cards that need a 12VHPWR connector.
- Enthusiasts prioritizing quiet operation, especially at low to medium system loads.
- PC builders who value a compact PSU footprint to save space in their chassis.
Not Recommended For
- Budget-conscious builders who don't need 1000 watts or Platinum efficiency.
- Users who need longer cables for full-size ATX cases and don't want to buy extensions.
- Anyone expecting cable compatibility with older Corsair SF series power supplies.
Watch Out For
- The included cables are shorter, so if you're putting this SFX unit in a larger ATX case using the bracket, you'll likely need to buy cable extensions for the 24-pin, EPS, or PCIe power cables.
- Corsair's Type-5 PSU connectors are not interchangeable with Type-4 connectors from previous SF models; using old cables can damage components.
- While quiet at lower loads, the 92mm fan can produce 40 dB of noise when the PSU is under 100% load, which might be audible in a quiet room.
Full Specifications
| ASIN | B0D45RN3KZ |
| Brand | Corsair |
| Color | Black |
| Series | SF1000 |
| Wattage | 1000 watts |
| Model Name | SF1000 |
| Form Factor | SFX |
| Item Weight | 2.31 pounds |
| Manufacturer | Corsair |
| Connector Type | ATX |
| Cooling Method | Fan (92mm PWM) |
| Output Wattage | 1000.0 |
| Item model number | CP-9020257-NA |
| Compatible Devices | Monitor |
| Product Dimensions | 4.92 x 3.94 x 2.5 inches |
| Item Dimensions LxWxH | 4.92 x 3.94 x 2.5 inches |
| Item dimensions L x W x H | 4.92 x 3.94 x 2.5 inches |
What Buyers Say
Many users on Reddit and other review sites highlight the SF1000's ability to deliver 1000 watts in a tiny SFX footprint, which is a big deal for high-power SFF builds. The quiet operation, especially the Zero RPM mode, gets mentioned a lot, with the fan only kicking in noticeably under heavy loads. The ATX 3.1 and PCIe 5.1 compliance with the included 12VHPWR cable is a key selling point for those with modern GPUs. However, the shorter cable lengths, typical for SFX PSUs, are a recurring point for those using it in larger cases.
“Man, this thing is tiny for 1000 watts, and my PC is finally quiet, but seriously, those cables are short, had to order extensions for my ATX build, ugh.”
Common Praise
- The SFX form factor is incredibly small for a 1000-watt unit.
- Fan is dead silent during normal desktop use and light gaming due to Zero RPM mode.
- The included 12VHPWR cable works perfectly with RTX 40 series GPUs.
- Fully modular cables make building and cable routing much cleaner in tight spaces.
- Voltage stability holds up well even under sustained high loads.
- The SFX-to-ATX bracket is a useful addition for broader compatibility.
Common Complaints
- Cables are too short for comfortable routing in anything larger than a compact ITX case.
- The fan becomes audible at 40 dB when the system is under full stress, like during benchmarking.
- The new Type-5 connectors mean old Corsair cables are useless, forcing new cable purchases if you want custom lengths.
- The price point is high, making it a significant investment for a power supply.
Ownership Tips
- The Zero RPM mode really does keep the fan off for most daily tasks, making the PC noticeably quieter.
- Cable stiffness is manageable for SFX, but the shorter lengths mean careful planning or extensions are a must for non-SFF builds.
- The 12VHPWR cable is a single, direct connection, which looks much cleaner than adapter cables.
- Even under heavy gaming, the fan noise is often masked by GPU or CPU cooler fans, unless the PSU is specifically stressed.
- The build quality feels premium, and the unit runs cool even when pushing a high-end CPU and GPU.
Frequently Asked Questions
Does this PSU come with a 12VHPWR cable for new GPUs?
Yes, the CORSAIR SF1000 (2024) is PCIe 5.1 ready and includes a 12VHPWR GPU cable for modern graphics cards like the NVIDIA GeForce RTX 40 Series.
Can I use this SFX power supply in a standard ATX case?
Yes, an SFX-to-ATX bracket is included in the box, allowing you to install this compact SFX power supply into a larger ATX case.
How quiet is the fan on this power supply?
The 92mm PWM cooling fan features Zero RPM Mode, meaning it won't spin at all under low to medium loads for silent operation. It remains quiet under higher loads, reaching about 40 dB at 100% capacity.
Are the cables compatible with older Corsair SF series PSUs?
No, this 2024 model uses Type-5 Micro-Fit PSU connectors, which are not interchangeable with the Type-4 connectors found on previous SF models. Using older cables can damage your components.
What is the warranty period for this power supply?
The CORSAIR SF1000 (2024) comes with a seven-year warranty, providing extended coverage for reliability.
Buying Guide
When you're looking at power supplies, especially for smaller PCs, wattage isn't the only thing. You need to think about the physical size (form factor) to make sure it actually fits in your case. Also, consider the efficiency rating; 80 PLUS Platinum means less wasted electricity as heat, which is a big deal for both your power bill and keeping your system cool. Finally, check the cable types and modularity – fully modular means you only plug in the cables you need, which is a lifesaver for cable management in tight builds.
SFX Form Factor
This means the power supply is physically much smaller than a standard ATX PSU. If you're building a compact PC, like in a mini-ITX case, an SFX unit is often the only one that will fit, allowing for smaller, more desk-friendly computers.
1000 Watts
This is the total power the PSU can deliver. For high-end gaming PCs with powerful CPUs and GPUs, 1000 watts provides plenty of headroom, ensuring stable power even during peak demand and allowing for future upgrades without needing a new PSU.
ATX 3.1 & PCIe 5.1 Compliant
These are the latest power delivery standards. ATX 3.1 handles rapid power spikes from modern components better, and PCIe 5.1 means it's designed for the newest graphics cards, often including a dedicated 12VHPWR cable, preventing compatibility issues and ensuring stability.
80 PLUS Platinum Rated
This certification indicates the power supply is very efficient, converting at least 90% of AC power to DC power at 20% load, 92% at 50% load, and 89% at 100% load. Higher efficiency means less electricity is wasted as heat, leading to lower operating temperatures and potentially lower energy bills.
Alternatives
If you don't need 1000 watts, look for SFX PSUs with lower wattage, like 750 or 850 watts, to save money. If your case supports it and you need longer cables, consider an SFX-L form factor for slightly more space and potentially longer cable lengths, but verify case compatibility first.
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