Can have up to 5TB of internal HDD storage ( 2x2TB 9.5mm HDDs + 1TB mSATA SSD). optical drive can be swapped with a second 2.5" 9.5mm SATA-III 6Gbps SSD or HDD in a caddy & in a JBOD, RAID-0 (performance) or RAID-1 (redundancy) configuration.Then can use a larger internal HDD for storage. mSATA (SATA-III) slot - can add a small and fast mSATA SSD to host your OS/programs.E6440 systems specced without an expresscard slot can retrofit one at low cost. rare 5Gbps expresscard slot allows implementing a ~$160 DIY eGPU for gaming graphics, CUDA/OpenCL processing or driving more external LCDs.AMD HD8690M dGPU option, similar performance to a GT730M/GT640M and faster than the HD4600 iGPU.Series-1 systemboards being dual-LVDs equipped capable of 1600x900. 1920x1080 eDP LCD option in latest E6440 to give more viewable content than the typically 1366x768.The result of doing so being one of the smallest most powerful Haswell systems available that can function as a desktop replacement.
socketted CPU allows a easy user upgrade up to a 37W/47W i7-quad, doubling i5/i7 dual-core CPU performance.Reasonable when you consider it's upgraded desktop-replacement performance and durable MIL-spec build in a portable 14" package. A E6440 can be had for ~US$400 on ebay-US.
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