AMD driver notes and benchmarks hint at Steam Deck 2 'Gainsborough' APU specs

References in AMD driver notes and benchmark data that have since been removed from OpenBenchmarking point to a new APU, codenamed Gainsborough, that may power Valve's next-generation Steam Deck 2. The chip would reportedly move to a 6-core, 12-thread Zen 6 CPU design from the current Steam Deck's 4-core Zen 2, while maintaining the same 2.4GHz base clock. More significantly for gaming performance, the system memory could jump to 24GB of LPDDR5-9600MT/s, a substantial increase from the 16GB of LPDDR5-6400MT/s in both the LCD and OLED Steam Deck models.

The Gainsborough codename follows Valve's established Final Fantasy naming convention for Steam Deck APUs: Aerith for the original LCD model and Sephiroth for the OLED revision. An 'AMD GBR' motherboard listing in the benchmark results reinforces this connection. However, the benchmark numbers themselves were unremarkable, showing only marginal improvement over the current Steam Deck at lower resolution, though this could reflect early engineering samples running at reduced TDP. Valve has previously confirmed active development of the Steam Deck 2 but has not announced timing or specifications.

What the Gainsborough leak suggests for Steam Deck 2 hardware

• CPU architecture: The reported 6-core/12-thread design on Zen 6 microarchitecture would represent a 50% core count increase and two full architecture generations beyond the current Steam Deck's Zen 2, though the 2.4GHz base clock remains unchanged.
• Memory subsystem: 24GB of LPDDR5-9600MT/s would deliver 50% more capacity and 50% higher transfer rate than the current 16GB LPDDR5-6400MT/s, directly addressing VRAM contention issues that affect modern titles on the 16GB unified memory pool.
• APU naming lineage: Gainsborough continues Valve's Final Fantasy VII character naming (Aerith Gainsborough, Sephiroth), with AMD driver notes explicitly referencing the codename and OpenBenchmarking listing an 'AMD GBR' motherboard.
• Benchmark caveats: The deleted results showed minimal performance uplift, but low-TDP engineering sample behavior, immature drivers, and early silicon make these figures unreliable predictors of final performance.

Why it matters

A memory upgrade to 24GB would significantly expand the Steam Deck 2's ability to run modern AAA titles under Proton that currently struggle with the 16GB unified memory ceiling, particularly as game VRAM requirements grow. For the broader Linux handheld ecosystem, a confirmed Zen 6-based APU with robust open-source Mesa RADV support would establish a new performance baseline that competing devices from ASUS, Lenovo, and others would likely follow, reinforcing AMD's dominance in the Linux gaming hardware space.