Power supply · MODEL NOTES
CORSAIR RM850e (2025, CP-9020296-NA)
An 850 W ATX option when compact depth matters
The 2025 RM850e is worth considering when the CPU/GPU combination justifies more capacity than the 650 W or 750 W alternatives, while the enclosure still benefits from a 140 mm PSU body. Additional capacity does not establish a specific noise level or cure an incompatible GPU harness. Compare the exact cable layout and case routing with the 160 mm RM850x before deciding.
Consider it when
- A verified 850 W-class single-GPU build in a case with limited PSU depth.
Look again when
- The build needs three documented independent conventional PCIe runs or a different regional variant.
THE SPACE IT NEEDS
Leave room beyond the PSU body
- PSU body length
- 140mm
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
Two standard PCIe cables are distinct from the alternative cable
The black CP-9020296-NA entry records two independent conventional PCIe cables. Its alternative dual-8-pin cable consumes the native 16-pin port. Check how the intended GPU is actually powered rather than adding every listed connector together, and keep clearance for connectors beyond the PSU chassis.
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
850 W; modular cabling; ATX 3.1 / PCIe 5.1; 12V-2x6 cable; 140 mm chassis.
| Brand | CORSAIR |
|---|---|
| Exact model | RM850e (2025, CP-9020296-NA) |
| Form factor | ATX |
| PSU rated output | 850 W |
| PSU body length | 140 mm; cable connectors need additional space |
| Direct PCIe 6+2-pin ends | 2 |
| Independent direct PCIe cables | 2 |
| Native 16-pin GPU cable | 1 supplied connection(s) · 12V-2x6; use the exact model’s supplied cables |
| Alternate GPU cable | 1 cable(s), 2 ends each; occupies the native 16-pin PSU port, so those paths cannot be counted together |
Exact 2025 black SKU CP-9020296; white version uses a different SKU.
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.
- CORSAIR — exact model specificationsEvidence checked
- CORSAIR — supporting specification or manualEvidence checked
See how it fits your list.
Review this component with your existing selections before making the change.