be quiet! Straight Power 12-1500w Modular Power Supply | 80 Plus Platinum ATX 3.1 Compliant | for PCIe 5.0 GPUs and GPUs with 6...

I used the be quiet! Straight Power 12 1500W (BN518) to power my new AI server/gaming rig (Asus Z760-F motherboard, Intel 12th Gen i9, 128GB RAM, and an RTX 5700). Installation into an NZXT H9 Flow RGB chassis was completely trouble-free—plenty of cable length, clean connectors, and a straightforward modular layout. This machine runs 24/7 for AI workloads and gaming, and after over a month of continuous operation, the power supply has been flawless. Voltage delivery has been stable, no hiccups on boot, and my GPU pulls power smoothly whether I'm running models, gaming, or doing heavy multitasking. As advertised, the PSU is extremely quiet. The 135mm fan barely spins up, even when the system is under load. If you're building something that demands reliability—AI training, local LLMs, 3D rendering, or high-end gaming—this PSU is more than capable. The ATX 3.1 compliance and PCIe 5.0 support also make it future-proof. It includes connectors for the latest GPUs (12VHPWR) while still offering plenty of 6+2-pin connectors for older cards. I appreciate having the headroom for future GPU upgrades, especially with higher-wattage cards becoming the norm. Overall, this is a premium, stable, and whisper-quiet power supply that delivers exactly what it promises. I’m very happy with it and highly recommend it. Easy 5 stars.

Liam · 2025-11-14 · via amazon

The be quiet! BN517 Straight Power 12 is an exceptional PSU for high-performance systems. With a 1200W output and 80 Plus Platinum efficiency, it easily powers my gaming rig and ensures minimal energy wastage. The modular design is a huge bonus, making cable management clean and hassle-free. What stands out the most is how quiet it is, even under heavy loads. True to its name, the PSU runs almost silently, which is perfect for anyone who values a quiet workspace or gaming environment. The ATX 3.0 support also ensures compatibility with the latest components, making it future-proof for upcoming builds. Build quality is top-notch, and the inclusion of premium cables adds to the overall value. I couldn’t be happier with this purchase—it's a solid investment for enthusiasts or professionals looking for reliability and performance.

z · 2024-11-26 · via amazon

Its only been about a month, but so far its been quiet and doing what it should, Definitely recommend this product so far. Cables seem to be good, easy to install in my case, it powers my pc perfectly so far.

chris anderson · 2025-10-17 · via amazon

This has been a fantastic power supply. Quiet and reliable. And it looks fantastic, too. Great looking cable sleeves. Good quality connectors. Great cable length. Fully modular. A bit pricey, but not still competitive with others in the same tier.

Cary Zinke · 2025-11-23 · via amazon

Absolutely amazing I can hardly hear it and the size is perfect when I got it the price was low so it's definitely worth the price.

SamuraiNoAkuma · 2025-11-27 · via amazon

Best Buy

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Newegg

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Newegg (Open Box)

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