Dual-core 2.41GHz processor for higher performance Powered by a 22nm 64-bit dual-core Intel® Celeron® 2.41GHz processor with 1GB energy-efficient DDR3L RAM (upgradable to 8GB), coupled with the support of SATA 6Gb/s, 2 Gigabit LAN ports and HDMI output, the TS-451U is a powerful NAS that delivers up to 224 MB/s read & write speeds with dual LAN ports. The TS-451U can also automatically increase the processor's clock rate from 2.41GHz to 2.58GHz when needed for CPU-intensive tasks. The TS-451U’s fast encryption and decryption performance provides transfer speeds of up to 128 MB/s with AES-256 bit volume encryption, boosting system performance & security while ensuring the safety of sensitive data stored in the TS-451U. Tested in QNAP Labs. Figures may vary by environment. Test Environment: NAS: - OS： QTS 4.1.2 - Volume type： RAID 5; 4 x Seagate ST1000NM0033 - Network environment： direct connection between NAS and PC, 1GbE LAN (MTU 1500); Client PCs: - Intel(R) Core(TM) i7-4770 3.40GHz CPU; DDR3 1600Hz model : ADATA XPG SX6000 Lite 512GB PCIe 3D NAND PCIe Internal Solid State Drive tag : NAS