What is me smallest capacity DIMM supported in HP Z440, Z640. and 2840 workstations? 05/21/2017 – by Mod_GuideK 0 What is me smallest capacity DIMM supported in HP Z440, Z640. and 2840 workstations? A. 2MB B. 4MB C. 2GB D. 4GB SHOW ANSWERSCorrect Answer: D Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.