ASUS – P5B Premium (Intel Socket 775, P965 Chipset)
Extreme Performance! Minimum Noise! Maximum Power Saving!
This motherboard supports the most powerful and energy efficient Intel® Core™2 processors. It features the Intel® P965 chipset and supports DDR2 800MHz dual-channel memory architecture. Quiet thermal technologies – 8-Phase Power Design, Stack Cool 2, Heat Pipe Design, Q-Fan 2 – together provide a comfortable environment for the processor, memory, graphics card and other components to interoperate effectively. With exclusive innovative tools – AI NOS™, AI Gear and AI Nap – users can adjust operation speed according to their specific needs. This motherboard is a cool and stable platform that delivers extreme performance, minimum noise and maximum power saving!
Intel® P965 Chipset
The Intel® P965 Express Chipset is the latest chipset designed to support maximum 8GB dual-channel DDR2 800/667/533 architecture, 1066/800 FSB (front-side-bus), PCI Express x16 graphics and multi-core CPU. It especially includes Intel® Fast Memory Access Technology that significantly optimizes the use of available memory bandwidth and reduces the latency of the memory accesses.
Optimize performance and quietness as you wish! To balance both system performance and quietness, AI Gear allows users to choose from profiles to adjust CPU frequency and vCore voltage, minimizing system noise and power consumption. Users can real-time change the mode under operating system to suit their needs. |
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![]() Minimize noise and power consumption when temporarily away With AI Nap, users can instantly snooze your PC without terminating the tasks. System will continue operating at minimum power and noise when user is temporarily away. It keeps downloading files or running applications in quietest state while you´re sleeping. Simply click keyboard or mouse, you can swiftly wake up the system in few seconds. |
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![]() Cooler and quieter system Longer components lifespan More stable and reliable under heavy-loading and overclocking ![]() The ASUS 8-Phase Power Design provides highly efficient operation to generate less heat (at least 15°C (59°F)) than other conventional power solutions. It reduces input ripple current and output ripple voltage, which keeps CPU and power module from suffering the risk of high power stress. It has the advantages of quick transient response and stability, especially beneficial when CPU requires more current immediately under heavy loading or overclocking mode.
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![]() Adjusts both CPU fan and chassis fan speeds according to system loading ASUS Q-Fan2 technology intelligently adjusts both CPU fan and chassis fan speeds according to system loading to ensure quiet, cool and efficient operation. |







The Heat Pipe design effectively directs the heat generated by the chipsets to the heatsink near the back IO ports, where it can be carried away by existing airflow from CPU fan or bundled optional fan. The purpose of the innovative heat pipe design on this motherboard is that the groundbreaking fanless design does not have lifetime problems as a chipset fan does. Furthermore, it provides options for users to install side-flow fan or passive cooler. The Heat Pipe design is the most reliable fanless thermal solution to date.



















