Valve’s September 2026 Steam Hardware & Software Survey listed Intel at 52.59% and AMD at 47.41% in its Windows processor-vendor table. From August to September, Intel’s share fell 1.88 percentage points while AMD’s rose 1.89 points.
Intel and AMD in Valve’s September Windows survey
| Processor vendor | September 2026 Windows share | Change from August (percentage points) |
| Intel | 52.59% | -1.88 |
| AMD | 47.41% | +1.89 |
A percentage-point change is the difference between two shares: Intel’s listed share moved down by 1.88 points, while AMD’s moved up by 1.89. Across the months shown from May through September, Intel’s Windows share went from 55.02% to 52.59%, although it edged up slightly in June before declining in the following months.
What the Steam survey measures
Valve describes the Steam Hardware & Software Survey as monthly, optional and anonymous. Its processor-vendor results are separated by operating system, so the September figures above describe Windows systems represented in the survey—not worldwide CPU sales or the entire PC market.
The separate September Linux table listed AMD at 66.18% and Intel at 33.71%, underscoring how the reported vendor shares vary by operating-system table.
