Mainboard, processor board card and computing system

A computing system, wherein the computing system comprises a mainboard, a processor board card and a non-processor board card;

• the mainboard comprises a plurality of interfaces, a first interface of the plurality of interfaces is configured to be connected to a processor board card having a processor circuit, a second interface of the plurality of interfaces is configured to be connected to a non-processor board card, and the first interface and the second interface are connected to each other via a communication circuit;
• the processor circuit on the processor board card runs based on a target memory, the target memory comprises a first memory, or comprises the first memory and a second memory, the first memory is located on the processor board card, and the second memory is located on the non-processor board card;
• the first interface is any one of interfaces based on a PCIe4.0 protocol, based on a PCIe5.0 protocol, and based on a Gen-Z protocol in type;
• the processor board card comprises a processor circuit, a first memory, and a communication connector, wherein the communication connector on the processor board card is connected to the first interface in the mainboard, and a communication connector on the non-processor board card is connected to the second interface in the mainboard;
• and
• the first memory is in a memory particle form and is welded on the processor board card.