ARM Cortex-A720

ARM Cortex-A720

General information
Launched	2023
Designed by	ARM Ltd.
Cache
L1 cache	64/128 KiB (32/64 KiB I-cache with parity, 32/64 KiB D-cache) per core
L2 cache	128–512 KiB per core
L3 cache	512 KiB – 32 MiB (optional)
Architecture and classification
Microarchitecture	ARM Cortex-A720
Instruction set	ARMv9.2-A
Products, models, variants
Product code name	"Hunter"
Variant	ARM Cortex-X4
History
Predecessor	ARM Cortex-A715
Successor	ARM Cortex-A725

The ARM Cortex-A720 is a CPU core model from Arm unveiled in 2023.^[1] It serves as a successor to the ARM Cortex-A715. Cortex-A700 CPU cores series focus on balanced performance and efficiency, and the CPU core can be paired with other cores in its family such as the high performance ARM Cortex-X4 or/and high efficiency ARM Cortex-A520 in a CPU cluster. It can be used as either "big" or "LITTLE".^{[2][3][4][5][6][7]}

Architecture changes in comparison with ARM Cortex-A715

• 15% peak performance improvement over the Cortex-A715
• Can down to same size as Cortex-A78 with 10% performance improvement
• Down L2 cache hit latency to 9 cycles (from 10 cycles)
• Down mispredict latency to 11 cycles (from 12 cycles)^[4]
• x2 L2 bandwidth
• Area optimize configuration for no area cost vs A78
• DSU-120
  • Up to 14 cores (up from 12 cores)
  • Up to 32 MiB of shared L3 cache (increased from 16 MiB)
• Update to ARMv9.2

Architecture comparison

uArch	Cortex-A78	Cortex-A710	Cortex-A715	Cortex-A720
Peak clock speed	~3.0 GHz
Decode width	4		5
Dispatch	6/cycle	5/cycle[8]		?
Max In-flight	160	?	192+[9]	?
L0 (Mops entries)	1536[10][11][12]		0
L1-I + L1-D	32/64+32/64 KiB
L2	128–512 KiB
L3	0–8 MiB	0–16 MiB		0–32 MiB
AArch	32-bit and 64-bit		64-bit
Architecture	ARMv8.2-A	ARMv9.0-A		ARMv9.2-A

See also

• ARM Cortex-X4, related high performance microarchitecture
• ARM Cortex-A520, related high efficient microarchitecture
• Comparison of ARMv8-A cores

References

1. Dahad, Nitin (2023-06-02). "Arm Total Compute Solution 2023 targets premium smartphones". Embedded.com. Retrieved 2024-01-17.
2. "New Arm Cortex-A720 and Cortex-A520 CPUs launched - Announcements - Arm Community blogs - Arm Community". community.arm.com. 2023-05-29. Retrieved 2023-09-16.
3. "Cortex-A720". developer.arm.com. Retrieved 2023-09-16.
4. Bonshor, Gavin. "Arm Unveils 2023 Mobile CPU Core Designs: Cortex-X4, A720, and A520 - the Armv9.2 Family". www.anandtech.com. Retrieved 2023-06-06.
5. "A closer look at ARM's new Cortex-A75 and Cortex-A55 CPUs". Android Authority. 2017-05-31. Retrieved 2023-06-06.
6. "Arm Introduces A New Big Core, The Cortex-A720". WikiChip Fuse. 2023-05-28. Retrieved 2023-06-06.
7. "TCS23: The complete platform for consumer computing - Announcements - Arm Community blogs - Arm Community". community.arm.com. 2023-05-29. Retrieved 2023-09-16.
8. "Arm Cortex-X2, A710, and A510 deep dive: New Armv9 CPU designs explained". Android Authority. 2021-05-25. Retrieved 2023-06-06.
9. "Arm Introduces The Cortex-A715". WikiChip Fuse. 2022-06-28. Retrieved 2023-09-16.
10. Frumusanu, Andrei. "Arm's New Cortex-A78 and Cortex-X1 Microarchitectures: An Efficiency and Performance Divergence". www.anandtech.com. Retrieved 2023-06-06.
11. "Documentation – Arm Developer". developer.arm.com. Retrieved 2023-06-06.
12. "Documentation – Arm Developer". developer.arm.com. Retrieved 2023-06-06.