Fujitsu's Monaka server CPU uses stacked 5nm cache die and dual 256-bit SVE2 units

At Hot Chips 2026, Fujitsu revealed its 144-core Monaka server CPU, which places its entire last-level cache on a separate 5nm SRAM die stacked beneath a 2nm compute die via hybrid bonding. The chip runs dual 256-bit SVE2 vector units, a reduction from the 512-bit SVE in its predecessor, and comes in 350W air-cooled and 500W liquid-cooled variants. Evaluation samples are available now, with volume production slated for 2027.