Valve’s next Steam Deck could arrive sooner than anyone expected. A YouTube channel called Moore’s Law is Dead has a new video claiming that AMD’s “Gainsborough” APU is the chip powering the long-awaited handheld, and the evidence lines up with what Valve has already said about the machine.
The OG Deck’s APU was called Aerith, after the Final Fantasy 7 character. Aerith’s surname is Gainsborough, which makes the codename official rather than a coincidence. The channel has a history of accurate leaks, though it admits it is not everyone’s cup of tea.
What Gainsborough Brings
The APU will be built on TSMC’s N3P node, the most advanced and efficient version of TSMC’s N3 family. That matters for a handheld, where battery life is the whole point. Valve wants the Deck 2 to be a real leap forward, not just a small upgrade.
“We’re not interested in getting to a point where it’s 20 or 30 or even 50% more performance at the same battery life. We want something a little bit more demarcated than that,” Steam Deck designer Pierre-Loup Griffais said at the time.
Comparing the Nodes
Apple has just released its new A20 Pro and M6 chips on TSMC’s latest N2 silicon. That makes N3 feel a bit dated. But the OG Aerith chip was built on TSMC 7 nm, two generations behind N3. So N3 is actually a step up, not a step back.
The rest of the specs are guesses. MLID thinks Gainsborough will use AMD’s Zen 6 CPU architecture and RDNA 5 GPU architecture. Both are expected in Microsoft and Sony’s next-gen consoles, and in AMD’s next-gen PC hardware, including new graphics cards due next year.
A Familiar Comparison
One reference point is the AMD “Canis” APU, the chip said to be in the upcoming Sony PS6 handheld. That chip packs:
- Four Zen 6c CPU cores
- Two Zen 6 low power cores
- 16 RDNA 5 GPU CUs
- A 192-bit memory bus
The Deck 2 could look very similar.
The OG Aerith chip has eight RDNA 2-spec CUs. RDNA 5 should outperform RDNA 2, and doubling the CU count with higher clock speeds points to a serious boost. Valve’s demand for a step change is looking possible.
Timing and the Memory Mess
MLID says the Gainsborough chip should be ready late next year or early 2028. Valve is not in a hurry, given the ongoing AI-fuelled RAMpocalyse and the damage it has done to recent hardware launches, most notably the Steam machine.
In many ways, the later Valve launches the Deck 2 the better. The memory market needs time to recover. But late 2028 now looks like a reasonable expectation.
The story ties together a credible technical analysis, Valve’s stated ambitions, and the current strain on chip manufacturing. It is a speculative report, not a confirmation, but the pieces fit.
Source material: “AMD's new 'Gainsborough' APU rumoured to be the chip that powers the long-awaited Steam Deck 2,” PC Gamer.
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