Raspberry Pi 3 Model B the Third Generation Pi 64-bit quad-core ARMv8 CPU 802.11
Amazon.com: MOUDOAUER 5.25V/3A Motherboard i 4 Model B Starter Kit with 32GB Micro SD Card Preloaded Noobs for Rasp-Berry Pi 4 : Electronics
Amazon.com: Latest Upgraded Raspberry Pi 3 Model B+ ( A 1.4GHz 64-bit Quad- core 1GB LPDDR2 SDRAM Cortex-A53 CPU ) Dual-Band 802.11ac Wireless LAN and Bluetooth 4.2 @XYGStudy : Electronics
Raspberry Pi 4 launches with BCM2711 quad-core Cortex-A72 64-bit SoC running at 1.5GHz with dual 4K display capability – RasPi.TV
Raspberry Pi 3 Model B A1.2GHz 64-bit Quad-core ARMv8 CPU, 1GB RAM
ARM big.LITTLE - Wikipedia
Raspberry Pi 4 launches with BCM2711 quad-core Cortex-A72 64-bit SoC running at 1.5GHz with dual 4K display capability – RasPi.TV
ARM Holdings Releases A Very Tiny Core For IoT And Wearables
ARM Cortex-A53 - Wikipedia
Raspberry Pi 3 Model B A1.2GHz 64-bit Quad-core ARMv8 CPU, 1GB RAM
CPU ID [21] :: CPU Details: Amlogic ARM Cortex-A53(ARMv8 64bit) 1.5Ghz quad core 64-bit - ODROID-C2 :: Amlogic S905 SoC
ARM's Cortex A57 and Cortex A53: The First 64-bit ARMv8 CPU Cores
ARM Introduces Cortex A35 64-bit Low Power Core, ARMv8-M Architecture for Secure MCUs - CNX Software
BCM4916 Quad-core ARM v8 compliant 64-bit processor for residential access point applications
ARM Unveils Cortex-R52 ARMv8-R CPU Core for Safety-Critical Systems - CNX Software
NVIDIA's 64-Bit Denver CPU Architecture Details Unveiled - Dual Custom ARMv8 Cores Clocked at 2.50 GHz