Lenovo System x3650M5 Processor Up to two Intel Xeon processor E5-2600 v4 product family CPUs with 22 cores - 2.6 GHz / 4 cores – 3.5GHz. Two QPI links up to 9.6 GT/s each. Up to 55 MB L3 cache  / Up to 24 DDR3 DIMMs sockets (12 DIMMs per processors) with Up to 1.5TB (24x 64GB LRDIMMs) and up to 2400MHz memory speed / ECC / Chipkill / memory mirroring & rank sparing / Intel C612 Chipset / Up to 28x 2.5" hot-swap SAS HDDs or 14x 3.5" hot-swap SATA for max. 119.6TB / Support 512e Advanced Format HDD / 12Gb SAS/SATA RAID: ServeRAID M1215 or M5210 with up to 4GB Flash / Upto Nine PCIe 3.0 slot / Four Gigabit Ethernet ports with Broadcom BCM5719 chipset / optional Optical Drive for selected models / Three USB 3.0, two USB 2.0 and 1 internal USB port for hypervisor / Integrated Management Module 2 (IMM2) using Renesas SH7758 / VGA Matrox G200eR2 with 16MB memory support 1600x1200 resolution / 550W, 750W, 900w or 1500w Hot-Swap Platinum and Titanium Power Supply (optional second RPS) / Rackmount 2U / Warranty 3years P/L O/S 24x7 / Standard Without Optical & Without Keyboard + Mouse