The Arm Cortex-A78 CPU delivers premium performance with the industry-leading power efficiency for multiple form factors.
The fourth-generation premium core built on DynamIQ technology. Paired with Cortex-A55 CPUs in a scalable DynamIQ big.LITTLE configuration, Cortex-A78 extends the performance and efficiency of premium smartphones to multiple form factors. Consumers demand premium level performance from devices, Cortex-A78 provides up to a 20% sustained performance increase, along with 50% energy savings when compared to earlier generation devices. Together with a solution-focused approach to chip design, including the GPU and NPU, Cortex-A78 provides greater efficiency for multi-day battery life across mobile, laptop, and foldable devices.
Arm Cortex-A78 CPU based on DynamIQ technology
||Pipeline||Out of order|
|Neon / Floating Point Unit||Included|
|Max number of CPUs in cluster
|Physical Addressing (PA)||40-bit
|Memory system and external interfaces
||L1 I-Cache / D-Cache||32KB to 64KB|
|L2 Cache||256KB to 512KB|
|L3 Cache||Optional, 512KB to 4MB
Up to 8MB (with Cortex-X1)
|Bus interfaces||AMBA ACE or CHI|
|Functional Safety Support||ASIL D systematic|
|Interrupts||GIC interface, GICv4|
|Debug||Armv8-A (plus Armv8.2-A extensions)|
|Embedded Trace Macrocell||ETMv4.2 (instruction trace)|
Key features compared to Cortex-A77
Some of the key areas where Cortex-A78 improves on performance and energy efficiency of Cortex-A77.
- Twenty percent sustained performance improvements (assuming a 1W power budget)
- Fifty percent energy savings at same performance, enabling multi-day battery life using latest process nodes
- Extended scalability with extra support from the DynamIQ Shared Unit for big.LITTLE
Cortex-A comparison table for Armv7-A and Armv8-A
Download the following PDF datasheet to compare the specifications of Cortex-A Armv7-A and Armv8-A processors.