Between the RM850e (2023) and C1500 Platinum, the RM850e (2023) comes out ahead in several specs, while the C1500 Platinum wins on wattage and warranty. Overall, the RM850e (2023) scores 61.1 and the C1500 Platinum scores 90.7 on our Mars Score.
Which should you buy?
The C1500 Platinum is the clear pick on raw spec strength, leading by 29.6 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The RM850e (2023) doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the C1500 Platinum if you care most about wattage and warranty. Its strongest claims are wattage, warranty, efficiency.
Both ship with comparable modular, atx 3.0 / 12vhpwr, so those specs don't separate the two — focus on the differences below.
Bottom line: the C1500 Platinum is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Corsair - RM850e (2023) wins
- No decisive advantages.
Why NZXT - C1500 Platinum wins
- ▲Wattage — 76.47% more. 1500 W vs 850 W.
- ▲Warranty — 3.00 yrs more. 10 vs 7.
- ▲Efficiency: 80+ Platinum (vs 80+ Gold).
Spec comparison
Spec
| Spec | Corsair - RM850e (2023) | NZXT - C1500 Platinum |
|---|---|---|
| Wattage | 850 W | 1500 Wlead |
| Efficiency | 80+ Gold | 80+ Platinumlead |
| Form factor | ATX | ATX |
Features
| Spec | Corsair - RM850e (2023) | NZXT - C1500 Platinum |
|---|---|---|
| Modular | full | full |
| ATX 3.0 / 12VHPWR | true | true |
| Warranty | 7 yrs | 10 yrslead |
Spec-level deep dives
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