Power supply · MODEL NOTES
be quiet! Straight Power 12 1200W (BN749)
A high-output configuration needs revision-specific connector evidence
Straight Power 12 1200W BN749 is worth considering when the hardware genuinely needs its capacity and connector arrangement. For an ordinary single-GPU desktop it may be unnecessary compared with a smaller properly specified unit. Two 16-pin connectors are not permission to attach arbitrary graphics cards: their combined requirements, the rest of the system and the manufacturer’s cabling instructions still determine suitability.
Consider it when
- A documented high-demand configuration whose power and connection plan fits this exact revision.
Look again when
- The listing refers to a different Straight Power 12 revision or the case has limited PSU clearance.
THE SPACE IT NEEDS
Leave room beyond the PSU body
- PSU body length
- 180mm
The body length excludes the working space needed for plugs and cable bends. Drive cages and the case layout can reduce that space.
Check power and cable requirements ↗Based on the manufacturer specification record, checked . Check the exact revision and installation instructions before buying.
The checks that can change your choice
Resolve the conflicting standard labels before purchase
The catalog records BN749 with an ATX 3.1 overview and two 12V-2x6 connectors, while a legacy technical table still says 3.0. Ask for the actual article/revision and cable contents. Its 180 mm body also needs extra space for modular plugs and routing beyond that dimension.
Check the whole power path
Compare the CPU and exact graphics card requirements with the PSU capacity and included connector arrangement. Count independent cable runs where the GPU manual requires them. Use only cables approved for this exact power supply; similar-looking modular plugs do not establish compatible wiring.
Published specifications
1200 W; 80 PLUS Platinum; modular cables; current overview lists ATX 3.1 and two 12V-2x6 connectors; 180 mm long.
| Brand | be quiet! |
|---|---|
| Exact model | Straight Power 12 1200W (BN749) |
| Form factor | ATX |
| PSU rated output | 1200 W |
| PSU body length | 180 mm; cable connectors need additional space |
| Direct PCIe 6+2-pin ends | 4 |
| Native 16-pin GPU cable | 2 supplied connection(s) · 12V-2x6; use the exact model’s supplied cables |
Exact US article BN749. Manufacturer overview says ATX 3.1 but a legacy technical table still says version 3.0; check revision with seller. No connector compatibility is inferred solely from wattage.
A different choice worth checking
These alternatives address related choices. Recheck their platform, connections and fit before treating one as a replacement.
Parts lists using this exact model
These lists show the surrounding components and the tradeoffs. They are editable planning examples, not measured systems.
Follow the check that matters to your build
Sources and review notes
RigAtlas connects manufacturer specifications to component choices. This page is document-based analysis; it does not claim a hands-on test or a current store offer.
- be quiet! — exact model specificationsEvidence checked
See how it fits your list.
Review this component with your existing selections before making the change.