cryptopp-keyed GCC 10.2.0 + glibc + GNU libstdc++ Clang: Processor: Intel Core i5-4460 @ 3.40GHz (4 Cores), Motherboard: MSI B85-G43 GAMING (MS-7816) v2.0 (V12.8 BIOS), Memory: 8GB, Disk: 2000GB Western Digital WD20EZRX-00D, Graphics: EFI VGA, Audio: Realtek ALC1150 OS: Wyvertux, Kernel: 5.9.10-artix1-1 (x86_64), Compiler: Clang 11.0.0Target: + LLVM 11.0.0, File-System: ext4, Screen Resolution: 1024x768 GCC: Processor: Intel Core i5-4460 @ 3.40GHz (4 Cores), Motherboard: MSI B85-G43 GAMING (MS-7816) v2.0 (V12.8 BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 8GB, Disk: 2000GB Western Digital WD20EZRX-00D, Graphics: MSI NVIDIA GeForce GTX 750 Ti, Audio: Realtek ALC1150, Network: Qualcomm Atheros Killer E220x OS: Arch Linux, Kernel: 5.9.10-artix1-1 (x86_64), Compiler: GCC 10.2.0, File-System: ext4, Screen Resolution: 1024x768 Crypto++ 8.2 Test: Keyed Algorithms MiB/second > Higher Is Better Clang . 429.51 |=============================================================== GCC ... 419.18 |=============================================================