be quiet!

be quiet! Straight Power 12 1500W

Expert rating8.8 / 10

Power SuppliesView on bequiet.com

Wattage:: 1500 W
80 PLUS Rating:: Platinum
Modularity:: Fully Modular
ATX Standard:: ATX 3.0

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Manufacturer: be quiet! Last updated: 2026-09-12

be quiet! Straight Power 12 1500W (1500W/80+ Platinum/ATX 3.0/Flagship Extreme Tier) Review

be quiet! Straight Power 12 1500W 1500W 80 Plus Platinum fully modular power supply, ATX 3.0 certified, ATX form factor, native 12V-2x6/12VHPWR connector, 10-year warranty, be quiet! (in-house) platform.

The be quiet! Straight Power 12 1500W is the highest-wattage member of the Straight Power 12 line, giving high-end multi-GPU and workstation builds an 80+ Platinum option below Dark Power pricing. Rated 1500W at 80 PLUS Platinum (Cybenetics Platinum efficiency / A+ noise), it's built on a be quiet! (in-house) platform with a 135mm Silent Wings 3 fan running a zero-RPM semi-passive mode at idle. Fully Modular cabling and a 190mm chassis depth make it a realistic fit for an extreme multi-GPU or high-core-count workstation, and it's backed by a 10-year warranty.

Efficiency, Noise, and Build Quality

The Straight Power 12 1500W carries an 80 PLUS Platinum certification and a Cybenetics Platinum efficiency / A+ noise rating, translating to consistently high real-world efficiency at typical 50% load and low fan noise thanks to its 135mm Silent Wings 3, fluid dynamic bearing. It uses a be quiet! (in-house) platform with Japanese-made capacitors throughout for long-term reliability under sustained load.

Connectors and Cabling

Connector layout is 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6 (600W), 6x PCIe 6+2-pin, 8x SATA, 4x Molex. With 1 native 12V-2x6 connector(s) rated to deliver up to 600W to a single GPU, there's no need for a 4x8-pin-to-12VHPWR adapter on current-generation flagship cards. Cabling is fully modular, using standard flat or ribbon cables, with a single +12V rail design that simplifies load balancing across connectors.

Comparison to Alternatives

Against the Cooler Master V Platinum 3000 (Cooler Master's 3000W Platinum workstation monster), the be quiet! Straight Power 12 1500W matches its wattage class but differs on connector generation and OEM platform, making the choice mostly about brand ecosystem, warranty length (10 years here), and whether native 12V-2x6 connectors matter for your GPU. Compared with the Seasonic Focus GX-750 (Seasonic's long-trusted 750W Gold workhorse), the Straight Power 12 1500W sits in the flagship extreme bracket at 1500W, so the decision usually comes down to matching wattage headroom to your actual GPU/CPU combo rather than one being categorically better.

Specifications

Identity

Brand	be quiet!
Model Number	Straight Power 12 1500W

Output and rails

+12V Rail Amperage	125 A
Single +12V Rail	Yes

Standards and compliance

PCIe CEM Standard	PCIe 5.1
Hold-Up Time	20.1 ms

Connector inventory

EPS 8-pin Connectors	2
SATA Connectors	9
Molex Connectors	2

Form factor and fit

Length	180 mm
Colour	Black

Cooling

Fan Bearing	Fluid Dynamic

Build quality

Topology	Full-Bridge LLC + DC-DC
MTBF	100000 hours

Cables

Modularity	Fully Modular

Monitoring, protection and price

Protections	OTP, OCP, OPP, SCP, OVP, UVP, SIP
Price	299.99 USD
Warranty	10 years

Wattage	1500 W
80 PLUS Rating	Platinum
ATX Standard	ATX 3.0
Form Factor	ATX
12V-2x6 Connectors	2
Sleeved Cables	Yes
PCIe 8-pin Connectors	4
Connector Count	1x 24-pin ATX, 1x EPS 4+4, 1x EPS 8-pin, 2x 12V-2x6, 4x PCIe 6+2-pin, 9x SATA, 2x Molex
Fan Size	135 mm
Fan Model / Bearing	135mm Silent Wings, fluid dynamic bearing, 6-pole motor
Japanese Capacitors	Yes
Source URL	https://www.bequiet.com/en/powersupply/4107

Expert Review

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8.8 / 10

A best-in-class 1500W Platinum-rated ATX unit for an extreme multi-GPU or high-core-count workstation, held back only by its premium price.

Best for

Builders targeting an extreme multi-GPU or high-core-count workstation
Anyone who wants fully modular cabling with native 12V-2x6 support
Systems where a 10-year warranty and Platinum-tier efficiency matter

Not for

Builds needing more than 1500W of continuous headroom
Buyers who need the smallest possible SFX/SFX-L footprint
Cost-sensitive builds better served by a lower-tier 80+ Bronze unit

FAQs

What are the key specifications of the be quiet! Straight Power 12 1500W (1500W/80+ Platinum/ATX 3.0/Flagship Extreme Tier)?

The be quiet! Straight Power 12 1500W (1500W/80+ Platinum/ATX 3.0/Flagship Extreme Tier) is a power supply from be quiet!. Key specs: Wattage 1500 W, 80 PLUS Rating Platinum, Cybenetics Efficiency Platinum, Cybenetics Noise A+, Modularity Fully Modular.

Will the be quiet! Straight Power 12 1500W (1500W/80+ Platinum/ATX 3.0/Flagship Extreme Tier) work with my current setup?

The be quiet! Straight Power 12 1500W (1500W/80+ Platinum/ATX 3.0/Flagship Extreme Tier) lists Wattage is 1500 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the be quiet! Straight Power 12 1500W (1500W/80+ Platinum/ATX 3.0/Flagship Extreme Tier) best suited to?

It suits builders targeting an extreme multi-gpu or high-core-count workstation, anyone who wants fully modular cabling with native 12v-2x6 support, systems where a 10-year warranty and platinum-tier efficiency matter.

What are the drawbacks of the be quiet! Straight Power 12 1500W (1500W/80+ Platinum/ATX 3.0/Flagship Extreme Tier)?

It is a poor fit for builds needing more than 1500w of continuous headroom, buyers who need the smallest possible sfx/sfx-l footprint, cost-sensitive builds better served by a lower-tier 80+ bronze unit.