cortex-a8 is the highest performance and most energy efficient processor developed by arm company. It has a speed range from 600mhz to 1ghz and a power consumption range of 300 milliwatts, which is suitable for various digital entertainment and mobile communication devices.
The document describes the need for a high‑performance, low‑power processor in modern mobile and entertainment devices and presents the Cortex‑A8 as a solution. It highlights the processor’s ability to scale from 600 MHz to over 1 GHz while staying under a 300 mW power budget, making it suitable for both power‑sensitive and performance‑critical applications.
Key architectural features are detailed, including a superscalar pipeline, NEON media engine, Thumb‑2, Jazelle‑RCT, TrustZone, and an AMBA 3 AXI bus. Cache configurations, dynamic branch prediction, and optional L2 cache sizes are also covered, emphasizing the balance of performance and power efficiency.
| Operating frequency range | 600 MHz to >1 GHz |
|---|---|
| Typical power consumption | <300 mW |
| Performance per MHz | 2.0 DMIPS/MHz |
| NEON video decode capability | VGA H.264 30 fps at 400 MHz |
| L2 cache size (optional) | 128 KB – 1 MB |
The processor can operate at speeds greater than 1 GHz.
It can run on a power budget of less than 300 mW.
The Cortex‑A8 includes NEON, Jazelle‑RCT, Thumb‑2, TrustZone, and an AMBA 3 AXI system bus.
It provides 2.0 DMIPS per MHz.