Broadcom Ships 25,6 Tbps mrežni preklopnik na 7 nm čipu



Broadcom has today started shipping its latest Tomahawk 4 chip for network switches, used by all hyperscale cloud providers like Google, Microsoft, and Amazon. The Tomahawk 4 is a processor built using a 7 nm manufacturing node from TSMC. Featuring over 31 billion transistors, the chip is one of the largest ever Broadcom built. It is an improvement to the Tomahawk 3, which achieved 12.8Tbps. This new chip is having two times the bandwidth available, resulting in 25.6 Tbps speeds while still achieving the form of a single die.

Da bi postigao veliku propusnost od 25,6 Tbps, Broadcom je na jedan monolitni dizajn stavio 512 PAM4 SerDes blokova koji rade na 50 Gbps. Sposoban da podržava 64 priključka 400GbE ili 256 portova od 100GbE, kaže se da Tomahawk 4 smanjuje troškove operacija za 75% zbog manje potrebne snage i hardvera za rad 25,6 Tbps prekidača, gdje se u prošlosti zahtijevalo pokretanje višestruki prekidači za postizanje takve propusnosti. Uz to, za kontrolu sve obrade telemetrije i pokretanje firmwarea za prekidače, četiri armaturna CPU-a koji rade na 1 GHz ugrađena su u kalup za pomoć.

Sources: TheNextPlatform, Tom's Hardware