AMD "GFX1251" Target Added To LLVM As Latest RDNA 4.5 APU

The past few months we have been intrigued by an AMD GFX1250 target added to the LLVM codebase for the AMDGPU shader compiler back-end. GFX12 is RDNA4 and GFX1250 is presumably some "RDNA 4.5" / "RDNA Refresh" part akin to GFX1150 having been for the RDNA 3.5 parts with Strix Halo / Strix Point. The prior LLVM code confirmed GFX1250 is in APU form factor but product details beyond that have been scarce. Today a new AMD GFX1251 target was merged to LLVM...