Corsair - RM1200x SHIFT vs Fractal Design - Ion+ 2 Platinum 860W
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Corsair - RM1200x SHIFT | Fractal Design - Ion+ 2 Platinum 860W |
|---|---|---|
| Wattage | 1200 W | 860 W |
| ATX 3.0 / 12VHPWR | true | false |
| Efficiency | 80+ Gold | 80+ Platinum |
Between the RM1200x SHIFT and Ion+ 2 Platinum 860W, the RM1200x SHIFT comes out ahead in wattage / atx 3.0 / 12vhpwr, while the Ion+ 2 Platinum 860W wins on efficiency. Overall, the RM1200x SHIFT scores 84.5 and the Ion+ 2 Platinum 860W scores 83.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (84.5 vs 83.3). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the RM1200x SHIFT if you care most about wattage / atx 3.0 / 12vhpwr. The biggest gaps in its favor are wattage, atx 3.0 / 12vhpwr. The single most decisive one: Wattage — 39.53% more. 1200 W vs 860 W.
Pick the Ion+ 2 Platinum 860W if you care most about efficiency. Its strongest claims are efficiency. The single most decisive one: Efficiency: 80+ Platinum (vs 80+ Gold).
Both ship with comparable modular, warranty, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Corsair - RM1200x SHIFT or Fractal Design - Ion+ 2 Platinum 860W?
Corsair - RM1200x SHIFT leads the current Mars Score by 1.2 points.The more useful decision is the trade-off behind that result: compare wattage, efficiency against the way you will actually use the product.
Choose Corsair - RM1200x SHIFT if…
Corsair - RM1200x SHIFT has the measurable edge on wattage w, has atx 3.
Choose Fractal Design - Ion+ 2 Platinum 860W if…
Fractal Design - Ion+ 2 Platinum 860W has the measurable edge on efficiency.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Corsair - RM1200x SHIFT wins
- ▲Wattage — 39.53% more. 1200 W vs 860 W.
- ▲Has ATX 3.0 / 12VHPWR.
Why Fractal Design - Ion+ 2 Platinum 860W wins
- ▲Efficiency: 80+ Platinum (vs 80+ Gold).
Spec comparison
Spec
| Spec | Corsair - RM1200x SHIFT | Fractal Design - Ion+ 2 Platinum 860W |
|---|---|---|
| Wattage | 1200 Wlead | 860 W |
| Efficiency | 80+ Gold | 80+ Platinumlead |
| Form factor | ATX | ATX |
Features
| Spec | Corsair - RM1200x SHIFT | Fractal Design - Ion+ 2 Platinum 860W |
|---|---|---|
| Modular | full | full |
| ATX 3.0 / 12VHPWR | truelead | false |
| Warranty | 10 yrs | 10 yrs |