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Cortex-A520 (Hayes) µarch
General Info
Arch Type	CPU
Designer	ARM Holdings
Manufacturer	TSMC
Introduction	Q4 2023
Process	4 nm
Core Configs	4
Pipeline
Type	In-order
OoOE	No
Speculative	Yes
Reg Renaming	No
Decode	3-way
Instructions
ISA	ARMv9.2-A
Extensions	FPU, NEON, SVE, SVE2, TrustZone
Cache
L1I Cache	32-64 KiB/core 4-way set associative
L1D Cache	32-64 KiB/core 4-way set associative
L2 Cache	0-512 KiB/cluster 4-way set associative
L3 Cache	256 KiB-32 MiB (optional)
Succession
Cortex-A510 (Klein) Cortex-A530 (Nevis)

Cortex-A520 (Hayes) is a planned ultra-high efficiency Cortex microarchitecture being designed by ARM Holdings as a successor to the Cortex-A510 (Klein). Cortex-A520 is scheduled for introduction around the 2023 timeframe.

Process Technology

The Cortex-A520 was primarily designed to take advantage of TSMC's 4 nm (TSMC N4P).

Architecture

Key changes from Cortex-A510

• Update to ARMv9.2-A
• Support only 64-bit applications
• Up to 512 KiB of private L2 cache (from 256 KiB)
• 8% peak performance improvement over the Cortex-A510
• Add QARMA3 Pointer Authentication (PAC) algorithm support

Comparison

uArch	Cortex-A53	Cortex-A55	Cortex-A510	Cortex-A520	Cortex-A530
Codename	Apollo	Ananke	Klein	Hayes	Nevis
Peak clock speed	2.3 GHz	2.1 GHz	2.0 GHz	2.0 GHz
Architecture	ARMv8.0-A	ARMv8.2-A	ARMv9.0-A	ARMv9.2-A
AArch	32-bit and 64-bit			64-bit
L1-I + L1-D	8/64 + 8/64 KiB	16/64 + 16/64 KiB	32/64 + 32/64 KiB
L2	0–256 KiB		0–512 KiB
L3	?	0–4 MiB	0–16 MiB	0–32 MiB
Decode Width	2		3	3 (2 ALU)
Dispatch	8

Cortex-X/-A Core

ARM • Cortex • Microarchitectures

Year	Cortex-X Core	Cortex-A Core
2020	Cortex-X1 (Hera) Cortex-X1C (Hera-C)	Cortex-A78 (Hercules) Cortex-A78C (Hera Prime)
2021	Cortex-X2 (Matterhorn-ELP)	Cortex-A710 (Matterhorn) Cortex-A510 (Klein)
2022	Cortex-X3 (Makalu-ELP)	Cortex-A715 (Makalu)
2023	Cortex-X4 (Hunter-ELP)	Cortex-A720 (Hunter) Cortex-A520 (Hayes)
2024	Cortex-X5 (Chaberton-ELP) Cortex-X925 (Blackhawk)	Cortex-A720AE (Hunter-AE) Cortex-A725 (Chaberton)
2025	Cortex-X930 (Travis)	Cortex-A730 (Gelas) Cortex-A530 (Nevis)

Processors

• Snapdragon 6 Gen 4 (SM6650) • 4nm (TSMC N4P)

1× @2.3GHz Kryo Prime (Cortex-A720) +

3× @2.2GHz Kryo Gold (Cortex-A720) +

4× @1.8GHz Kryo Silver (Cortex-A520)

• Snapdragon 7+ Gen 3 (SM7675-AB) • 4nm

1× 2.8 GHz Kryo Prime (Cortex-X4) +

4× 2.6 GHz Kryo Gold (Cortex-A720) +

3× 1.9 GHz Kryo Silver (Cortex-A520)

• Snapdragon 7s Gen 3 (SM7635) • 4nm

1× @2.5GHz Kryo Prime (Cortex-A720) +

3× @2.4GHz Kryo Gold (Cortex-A720) +

4× @1.8GHz Kryo Silver (Cortex-A520)

• Snapdragon 8 Gen 3 (SM8650-AB) • 4 nm (TSMC N4P)

1× @3.3GHz Kryo Prime (Cortex-X4) +

3× @3.15GHz Kryo Gold (Cortex-A720) +

2× @2.96GHz Kryo Gold (Cortex-A720) +

2× @2.27GHz Kryo Silver (Cortex-A520)

• Snapdragon 8 Gen 3 (SM8650-AA)

1× @3.05GHz Kryo Prime (Cortex-X4) +

5× @2.96GHz Kryo Gold (Cortex-A720) +

2× @2.04GHz Kryo Silver (Cortex-A520) Q4 2024

• Snapdragon 8 Gen 3 for Galaxy (SM8650-AC)

1× @3.4GHz Kryo Prime (Cortex-X4) +

3× @3.15GHz Kryo Gold (Cortex-A720) +

2× @2.96GHz Kryo Gold (Cortex-A720) +

2× @2.27GHz Kryo Silver (Cortex-A520)

• Snapdragon 8s Gen 3 (SM8635)

1× @3.0GHz Kryo Prime (Cortex-X4) +

4× @2.8GHz Kryo Gold (Cortex-A720) +

3× @2.0GHz Kryo Silver (Cortex-A520)

See also

• ARM • Cortex

• Scorpion • Scorpion
• Krait • Krait
• Kryo • Kryo
• Oryon • Oryon

• Hexagon
• Adreno
• Venus