ASUS ROG Loki SFX-L 1000W Platinum (Fully Modular Power Supply, 80+ Platinum, 120mm PWM ARGB Fan, Aura Sync, ATX 3.0 Compatible, PCIe 5.0 Ready, 10 Year Warranty)
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This 1000W 80+ Platinum SFX-L power supply with ATX 3.0/3.1 and a 10-year warranty is for small form factor builds demanding high power and ARGB aesthetics.
This 1000W 80+ Platinum SFX-L power supply is a strong fit for high-performance small form factor builds. Its ATX 3.0/3.1 compatibility and included 16-pin PCIe 5.0 cable make it ideal for powering current and next-gen GPUs in compact cases. The fully modular design and ARGB fan cater to builders who prioritize both functionality and aesthetics.
If your case only supports true SFX and not SFX-L, or if 1000W is overkill, look for a lower wattage SFX PSU with 80+ Platinum certification.
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Pros
- Delivers 1000 watts of power, suitable for high-performance components like RTX 4090 GPUs.
- Achieves 80+ Platinum efficiency, converting up to 92% of AC power to DC power for less heat and noise.
- Includes a 16-pin PCIe 5.0 cable, capable of supplying up to 600W to compatible graphics cards, and is ATX 3.0/3.1 compatible.
- Features a fully modular design with flexible, individually sleeved cables for cleaner builds and easier routing.
- Equipped with a 120mm PWM ARGB fan and ROG heatsinks, designed for quiet operation and effective thermal management, including a 0dB mode at lighter loads.
- Backed by a 10-year limited warranty, indicating manufacturer confidence in its durability.
Cons
- The SFX-L form factor (125 x 125 x 63.5 mm) is larger than standard SFX, potentially limiting compatibility with ultra-compact SFX cases.
- Some users report experiencing coil whine or a humming noise under load, despite claims of quiet operation.
- Cable routing can still be challenging in very tight small form factor cases, even with flexible cables.
- There are user reports of fan issues or failures, leading to increased noise or RMA processes.
- Some buyers have received the ATX 3.0 version when newer ATX 3.1 units with the 12v2x6 connector are shipping.
Dimension Scores
The 1000W output combined with 80+ Platinum certification and ATX 3.0/PCIe 5.0 (600W) compatibility offers top-tier power delivery and efficiency.
It features a 120mm PWM fan with a 0dB mode and ROG heatsinks designed for quiet operation, though some users report coil whine under load.
The ROG branding, 10-year warranty, use of low-ESR Japanese capacitors, and Cybenetics Platinum certification point to a premium construction.
Its fully modular design with flexible, individually sleeved cables significantly aids in managing cables, especially in compact builds.
Best For
- Small form factor gaming PCs utilizing high-power graphics cards like the RTX 4090.
- Custom builds where power efficiency (80+ Platinum) and low heat generation are priorities.
- Users who want synchronized RGB lighting effects across their gaming setup via Aura Sync.
Not Recommended For
- Budget-conscious PC builds where a 1000W 80+ Platinum PSU is an unnecessary expense.
- Ultra-compact cases that strictly require a true SFX form factor, not SFX-L.
- Users who prefer a completely silent system and are sensitive to potential coil whine or fan noise.
Watch Out For
- Some users have reported noticeable coil whine or a humming sound, particularly when the PSU is under load with high-power GPUs.
- The SFX-L form factor, while compact, is not as small as a true SFX PSU, meaning it might not fit in the most restrictive small form factor cases.
- Despite flexible cables, routing them in extremely tight SFF cases can still be a 'rat's nest' and time-consuming.
- A minority of users have experienced fan failures or issues, sometimes requiring an RMA for replacement.
- There's a chance of receiving an older ATX 3.0 unit instead of the newer ATX 3.1 version with the updated 12v2x6 connector, depending on stock.
Full Specifications
| ASIN | B0BZJ5WNJS |
| Brand | ASUS |
| Color | ROG-LOKI-1000P-SFX-L-GAMING |
| Series | ROG-LOKI-1000P-SFX-L-GAMING |
| Wattage | 1000 watts |
| Model Name | ROG-LOKI-1000P-SFX-L-GAMING |
| Form Factor | ATX |
| Item Weight | 4 pounds |
| Manufacturer | ASUS |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 1000.0 |
| Flash Memory Size | 256 GB |
| Item model number | ROG-LOKI-1000P-SFX-L-GAMING |
| Compatible Devices | Desktop, Personal Computer |
| Product Dimensions | 4.9 x 4.9 x 2.5 inches |
| Item Dimensions LxWxH | 4.9 x 4.9 x 2.5 inches |
| Item dimensions L x W x H | 4.9 x 4.9 x 2.5 inches |
| Standing screen display size | 15.6 Inches |
What Buyers Say
Many users are genuinely surprised by how much power this SFX-L unit packs into its relatively small footprint, making it a go-to for high-end SFF builds. The integrated ARGB fan and Aura Sync compatibility are frequently highlighted for adding a premium aesthetic touch, which is uncommon for power supplies. However, a recurring complaint involves coil whine or fan noise under heavy loads, which can detract from an otherwise quiet system for some. The included flexible cables are a double-edged sword; while praised for quality, routing them in extremely tight cases still proves challenging for many builders.
“Look, I needed something small but powerful for my 4090 build, and this Loki delivers on the watts and the RGB, but man, that coil whine sometimes makes me wanna pull my hair out. Still, it's a beast.”
Common Praise
- Compact SFX-L form factor fits well in many small cases.
- Provides ample 1000W power for demanding components like the RTX 4090.
- The 80+ Platinum efficiency reduces heat and electricity consumption.
- ATX 3.0/3.1 compatibility with the 16-pin PCIe 5.0 cable is future-proof.
- Aura Sync compatible ARGB fan adds a customizable visual element.
- Flexible, individually sleeved cables simplify routing in tight spaces.
Common Complaints
- Some units exhibit noticeable coil whine or humming noise under load.
- The SFX-L size, while small, is still too large for some true SFX-only cases.
- Despite cable flexibility, managing them in very cramped SFF builds remains difficult.
- A few users have reported issues with the fan, including premature failure or persistent noise.
- Receiving an older ATX 3.0 version instead of the newer ATX 3.1 has been a point of contention for some buyers.
Ownership Tips
- The 0dB fan mode works well at idle, but the fan can become audible under sustained heavy loads, sometimes accompanied by a high-pitched hum.
- The included cables, while flexible, are still quite thick, requiring careful planning for routing in cases with minimal clearance.
- Aura Sync integration is seamless with compatible motherboards, allowing for easy customization of the fan's RGB lighting.
- The 10-year warranty provides significant peace of mind, especially given the high power output and compact nature of the unit.
- The physical weight of the unit feels substantial, giving a perception of robust internal components and build quality.
Frequently Asked Questions
Is this a standard SFX or SFX-L power supply?
This is an SFX-L power supply, which means it's slightly longer than a standard SFX unit, measuring 125 x 125 x 63.5 mm.
Does it come with a 12VHPWR cable for new graphics cards?
Yes, it includes a 16-pin PCIe 5.0 cable that can deliver up to 600W of power to compatible graphics cards.
What is the warranty period for this power supply?
The ASUS ROG Loki SFX-L 1000W Platinum comes with a 10-year limited warranty.
Is the fan always spinning, or does it have a 0dB mode?
The 120mm PWM fan features a 0dB operating mode at lighter loads, meaning it will stop spinning when power consumption is low to reduce noise.
Is this power supply ATX 3.0 or ATX 3.1 compatible?
It is ATX 3.0 compatible, and newer shipments may even be updated to ATX 3.1 with the 12v2x6 connector.
Buying Guide
When you're looking at a power supply like this, you're really balancing raw power with physical size. For small form factor (SFF) PCs, every millimeter counts. This unit is SFX-L, which is a bit bigger than standard SFX, so double-check your case's compatibility. You're paying for high wattage in a compact space, plus the latest power standards for modern graphics cards.
Wattage (1000W)
This number tells you the maximum power your PSU can deliver to all your components. A 1000W unit is overkill for most basic systems but essential for high-end gaming PCs running powerful GPUs like an RTX 4090, preventing crashes and ensuring stable performance.
80+ Platinum
This certification indicates how efficiently the PSU converts power from your wall outlet to your PC. Platinum means it's extremely efficient (up to 92%), wasting less energy as heat. This saves you a tiny bit on your electricity bill and keeps your case cooler, which is crucial in tight SFF builds.
SFX-L Form Factor
This refers to the physical size of the power supply. SFX-L units are designed for small cases but are slightly longer than true SFX PSUs. You need to make sure your specific SFF case has enough depth to accommodate its 125mm length, otherwise, it simply won't fit.
ATX 3.0 Compatible / PCIe 5.0 Ready
This means the PSU is built to handle the transient power spikes of modern, power-hungry graphics cards and includes the new 16-pin connector (12VHPWR) that can deliver up to 600W directly. It's about future-proofing your system and avoiding the need for bulky adapter cables for new GPUs.
Alternatives
If space is your absolute top priority, search for true SFX power supplies, which are shorter in length. If you don't need 1000W, consider lower wattage 80+ Platinum or Gold rated SFX-L units to potentially save some cash.
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