Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Bigscreen - Beyond 2 | Valve - Index |
|---|---|---|
| Refresh rate | 90 Hz | 144 Hz |
| Field of view | 116 ° | 130 ° |
| Eye tracking | true | false |
Between the Beyond 2 and Index, the Beyond 2 comes out ahead in eye tracking, while the Index wins on refresh rate / field of view. Overall, the Beyond 2 scores 50.5 and the Index scores 65.4 on our Mars Score.
Which should you buy?
The Index is the clear pick on raw spec strength, leading by 14.9 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.
Pick the Beyond 2 if you care most about eye tracking. The biggest gaps in its favor are eye tracking. The single most decisive one: Has Eye tracking.
Pick the Index if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are refresh rate, field of view. The single most decisive one: Refresh rate — 60.00% more. 144 Hz vs 90 Hz.
Both ship with comparable standalone, color passthrough, so those specs do not separate the two — focus on the differences below.
Bottom line: the Index is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Bigscreen - Beyond 2 or Valve - Index?
Valve - Index leads the current Mars Score by 14.9 points.The more useful decision is the trade-off behind that result: compare refresh rate, field of view against the way you will actually use the product.
Choose Bigscreen - Beyond 2 if…
Bigscreen - Beyond 2 has the measurable edge on has eye tracking.
Choose Valve - Index if…
Valve - Index has the measurable edge on refresh rate hz, fov deg.
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 Bigscreen - Beyond 2 wins
- ▲Has Eye tracking.
Why Valve - Index wins
- ▲Refresh rate — 60.00% more. 144 Hz vs 90 Hz.
- ▲Field of view — 12.07% more. 130 ° vs 116 °.
Spec comparison
Display
| Spec | Bigscreen - Beyond 2 | Valve - Index |
|---|---|---|
| Resolution per eye | 2560x2560 | 1440x1600 |
| Refresh rateⓘ | 90 Hz | 144 Hzlead |
| Field of view | 116 ° | 130 °lead |
| Panelⓘ | Micro-OLEDlead | LCD |
Tracking & Audio
| Spec | Bigscreen - Beyond 2 | Valve - Index |
|---|---|---|
| Inside-out tracking | false | false |
| Eye tracking | truelead | false |
| Face tracking | false | false |
| Color passthrough | false | false |
Compute
| Spec | Bigscreen - Beyond 2 | Valve - Index |
|---|---|---|
| Standalone | false | false |
| Battery | 0 h | 0 h |