ASUS ROG Loki SFX-L 750W Platinum (Fully Modular Power Supply, 80+ Platinum, Lambda A Certified, 120mm PWM ARGB Fan, Aura Sync, ATX 3.0 Compatible, PCIe 5.0 Ready, 10 Year Warranty)
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AI Verdict
This 750W 80+ Platinum SFX-L power supply with ATX 3.0 and PCIe 5.0 readiness is for small form factor builds needing high efficiency and a 16-pin GPU cable.
This 750W SFX-L unit is a strong fit for high-performance small form factor builds, especially those with modern PCIe Gen 5.0 GPUs, thanks to its ATX 3.0 compliance and included 16-pin cable. Its 80+ Platinum efficiency and fully modular design cater well to the demands of compact, powerful systems.
If 750W isn't enough for your components, look for the 850W or 1000W versions of the ROG Loki SFX-L, or consider a larger ATX form factor PSU if your case allows.
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Pros
- Certified 80 PLUS Platinum, achieving up to 92% efficiency for reduced heat and power consumption.
- Includes a 16-pin PCIe cable capable of delivering up to 600W, making it ready for PCIe Gen 5.0 graphics cards.
- Features ROG heatsinks covering critical components, designed to lower temperatures and extend component lifespan.
- Equipped with a 120mm PWM ARGB fan that supports Aura Sync for customizable lighting effects.
- Lambda A Certified for low noise levels, specified at below 25 dB.
- Backed by a 10-year warranty for core product operation, indicating manufacturer confidence in durability.
Cons
- The SFX-L form factor (125mm length) is longer than standard SFX PSUs (100mm), potentially causing clearance issues in some compact cases.
- Some users have reported a noticeable humming or coil whine, particularly when paired with certain high-end GPUs like the RTX 4070.
- The fan may not stop spinning until the PC enters sleep mode, even at low loads, despite having a 0dB operating mode at lighter loads.
- The 3-year warranty for the RGB LEDs is significantly shorter than the 10-year warranty for the core PSU.
Dimension Scores
The 80 PLUS Platinum certification means it's up to 92% efficient, and it delivers a stable 750W with ATX 3.0 and PCIe 5.0 readiness for up to 600W to GPUs.
It boasts Lambda A Certification for noise levels below 25 dB and a 0dB mode at low loads, but some users report noticeable humming or fan noise not stopping until sleep.
It features ROG heatsinks, dual ball bearing fan, and enthusiast-grade components, backed by a 10-year warranty, indicating a focus on durability.
Being fully modular with flexible, etched cables and including a 16-pin PCIe 5.0 cable makes for streamlined routing in compact builds.
Best For
- Small form factor (SFF) PC builds requiring a 750W power output and ATX 3.0 compatibility.
- Gaming rigs utilizing PCIe Gen 5.0 graphics cards that need a direct 16-pin power connection.
- Enthusiasts prioritizing high power efficiency (80+ Platinum) and modular cabling for clean builds.
- Users who want synchronized RGB lighting in their SFF system via Aura Sync.
Not Recommended For
- Ultra-compact SFX cases that only support standard 100mm SFX power supply lengths.
- Budget-conscious builders, as its feature set and brand positioning place it in a mid-range price band.
- Users extremely sensitive to minor electrical noises, due to reported instances of coil whine.
Watch Out For
- The SFX-L form factor, at 125mm long, might not fit in all cases designed for smaller 100mm SFX power supplies, so double-check your case's PSU clearance before buying.
- Some users experienced a 'humming' noise or coil whine, especially with an RTX 4070, which can be distracting during operation.
- Despite a 0dB operating mode, the fan has been reported by some to not stop completely until the PC is put to sleep, potentially leading to continuous low-level fan noise.
Full Specifications
| ASIN | B0BZFQZR81 |
| Brand | ASUS |
| Color | ROG-LOKI-750P-SFX-L-GAMING |
| Series | ROG-LOKI-750P-SFX-L-GAMING |
| Wattage | 750 watts |
| Model Name | ROG-LOKI-750P-SFX-L-GAMING |
| Form Factor | SFX |
| Item Weight | 4 pounds |
| Manufacturer | ASUS |
| Connector Type | SFX |
| Cooling Method | Air |
| Output Wattage | 750.0 |
| Item model number | ROG-LOKI-750P-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 |
What Buyers Say
The biggest surprise from users is how often the SFX-L form factor catches people off guard; some didn't realize it was longer than standard SFX and still managed to fit it in mid-towers, while others warned about tight clearances in true SFF cases. A recurring complaint is a distinct humming or coil whine, particularly when paired with power-hungry GPUs like the RTX 4070, which can be quite annoying despite its Lambda A certification for low noise. The fan's behavior also comes up, with some users noting it doesn't always stop in 0dB mode until the PC is put to sleep.
“Man, this thing is quiet most of the time, but that little hum when my 4070 kicks in is kinda annoying, and I wish the fan would just stop when it's idle like it's supposed to. Still, it powered my tiny build no problem.”
Common Praise
- The 16-pin PCIe 5.0 cable is included and works as expected for new GPUs.
- The fully modular design makes cable routing much cleaner in small cases.
- The ARGB fan and Aura Sync compatibility add a visually appealing element to builds.
- High efficiency (80+ Platinum) helps keep system temperatures down and power consumption in check.
- The unit's compact SFX-L size is appreciated for SFF builds that can accommodate it.
Common Complaints
- Some users report a 'humming' or coil whine noise, especially under load with certain GPUs.
- The fan doesn't always enter 0dB mode or stop spinning until the PC is in sleep mode.
- The SFX-L length (125mm) can be a tight fit or incompatible with cases designed for standard 100mm SFX PSUs.
- The RGB LED warranty is only 3 years, significantly shorter than the 10-year PSU warranty.
Ownership Tips
- The included cables are flexible enough for tight SFF routing, which is a huge plus for cable management.
- The ARGB lighting integrates seamlessly with other Aura Sync components, making for a cohesive look without extra software hassle.
- The SFX-L size, while not true SFX, often fits in cases that advertise SFX compatibility, but it's a close call sometimes.
- The 10-year warranty provides peace of mind for long-term use, though the RGB part is shorter.
Frequently Asked Questions
Is this power supply compatible with ATX cases?
While it can technically function in an ATX case, its SFX-L form factor is much smaller than standard ATX PSUs. You would likely need an SFX to ATX adapter bracket, which is not included, and the shorter cables might be an issue in larger cases.
Does it come with the 12VHPWR cable for new NVIDIA GPUs?
Yes, it includes a 16-pin PCIe cable that can deliver up to 600W, making it ready for PCIe Gen 5.0 graphics cards.
How quiet is this power supply?
It is Lambda A Certified for low noise, rated below 25 dB, and features a 0dB operating mode at lighter loads. However, some users have reported a humming noise or coil whine under certain loads.
What is the warranty on this power supply?
The core power supply unit has a 10-year warranty. The ARGB LEDs on the fan, however, are covered by a shorter 3-year warranty.
Will this fit in my mini-ITX case?
It's an SFX-L form factor, which is 125mm long. Many mini-ITX cases support SFX-L, but some are strictly limited to 100mm SFX PSUs. You need to check your specific case's power supply clearance.
Buying Guide
When picking a power supply, especially for a small PC, you need to think about more than just wattage. The 'form factor' (like SFX-L here) dictates if it'll even fit in your case. 'Modular' means you only plug in the cables you need, which is a lifesaver for keeping tiny builds tidy. 'Efficiency rating' (like 80+ Platinum) tells you how much power is wasted as heat, affecting both your electricity bill and how hot your case gets. And for new graphics cards, 'ATX 3.0' and 'PCIe 5.0 ready' with a 16-pin cable are crucial for stable power delivery.
SFX-L Form Factor
This refers to the physical size of the power supply. SFX-L units are slightly longer than standard SFX, meaning they might not fit in the absolute smallest cases, so measure your case's PSU bay carefully. It's like trying to fit a slightly larger shoe into a perfectly sized shoebox.
80+ Platinum Certification
This is an efficiency rating. Platinum means the PSU converts at least 90% of the AC power from your wall into usable DC power for your PC at 20% load, 92% at 50% load, and 89% at 100% load. Higher efficiency means less wasted energy as heat, which is important for cooling in compact systems and can save you a bit on electricity.
ATX 3.0 Compatible & PCIe 5.0 Ready
These are the latest power standards, especially important for modern, power-hungry graphics cards. ATX 3.0 handles transient power spikes better, and PCIe 5.0 readiness means it comes with the new 16-pin power connector (12VHPWR) that many high-end GPUs now use, simplifying cabling and ensuring stable power delivery.
Alternatives
If this SFX-L unit is too long for your case, search for 'SFX power supplies' with a 100mm length. If you need more wattage, look for '850W SFX-L' or '1000W SFX-L' units that also have ATX 3.0 and 80+ Platinum ratings.
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