Asustek Computer, the world’s largest maker of mainboards, on Monday announced a series of motherboards that will support Intel’s new Core 2 central processing units (CPUs) with 1333MHz processor system bus (PSB). Apparently, Asustek enables 1333MHz bus support even on motherboards that do not officially support it. The move allows owners of appropriate platforms to upgrade to newer chips without mainboard change.

“As the leading motherboard manufacturer, our customers have come to expect the latest solutions from us. Our series of Intel Core 2 Extreme/Core 2 Duo 1333MHz PSB-ready motherboards once again proves our leadership position for the newest and most advanced processors,” said Joe Hsieh, director of Asustek’s motherboard business.

Besides an array of mainboards based on Intel 3-series core-logic sets, Asustek supports Intel Core 2 Duo and Intel Core 2 Extreme chips with 1333MHz PSB with motherboards powered by Intel P965, Intel 975X, Nvidia nForce 650i SLI and Nvidia nForce 680i SLI. In order to install a new central processing unit with high-speed processor system bus, end-users will have to update firmware of their mainboards

Neither Intel P965, nor Intel 975X officially support processors with 1333MHz bus, however, Asustek still decided to enable it on certain motherboards, as the chipset silicon can handle speeds beyond officially declared specs. In fact, even Intel Corp. officially supports DDR2 PC-8500 (1066MHz) on its Intel 975X-based motherboard, despite of the fact that the official support is not declared.

“Asus will always keep in step with the latest developments and provide hardware and firmware updates for optimal Intel Core 2 Extreme/Core 2 Duo 1333MHz PSB performance and functionality. Also, more Intel Core 2 Extreme/Core 2 Duo 1333MHz PSB-ready Asus motherboards will be announced soon,” the company said in a statement.