Morgan Stanley’s upgraded CXL forecast is circulating as a Marvell thesis, and the exhibit it comes from does not support the weight being put on it. The chart stacks two lines, memory expansion controllers and switch silicon, and carries the combined market from roughly $50 million in 2025 to about $4.05 billion in 2030. Both halves were raised hard. MXC went from $990 million to $2.1 billion. Switching went from $664 million to $1.9 billion. What did not change is the scale of the thing being doubled. Four billion dollars in 2030 is the entire industry, before Marvell divides it with Astera Labs, Montage, Microchip and Rambus.

CXL was sold as a capacity story: extend the memory pool past the DIMM slots soldered to the motherboard. Marvell’s argument with Structera is sharper than that. The pool itself is half-empty. The data sitting in DRAM is compressible, almost no CXL controller touches it, and Structera does — in dedicated silicon, at line rate, invisible to the host.

The number circulating is 3.64x, the top of the range Marvell cites for mixed real-world data types, which it claims match or closely approach what host-side LZ4 achieves in software. Field reporting has been more conservative; ServeTheHome quoted Marvell putting practical ratios at 1.8x to 2x. Both numbers point the same way. Even a flat 2:1 halves the effective cost per gigabyte of a memory pool, and memory is the single largest line item in that pool.