Dell PowerEdge R740xd2 EMC Installation and Service Manual - Page 166
Memory specifications, Storage controller specifications
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Table 26. Expansion card slots supported on the system board Processor 1 PCie slots on the riser Card support Riser 2 (LOM riser) Right Butterfly On riser riser Planar PCIe slot-1 Unique to x8 Dell PCIe slot-2 Low profile- x16 half length PCIe slot-2 Full heighthalf length x16 x8 or x16 PCIe slot-3 Low profile- x8 half length PCIe slot-4 Low profilehalf length PCIe slot-5 Low profile- x4 NOTE: half length PCIe slot 5 has open backend and bigger PCIe card connection s can be inserted in this slot. PCIe slot-6 Low profilehalf length Processor 2 PCH Internal riser Left riser On Planar On Planar x16 x16 x4 NOTE: The expansion-card slots are not hot-swappable. Memory specifications The Dell EMC PowerEdge R740xd2 system supports 16 DDR4 registered DIMM (RDIMMs) slots. Supported memory bus frequencies are 1866 MT/s, 2133 MT/s, 2400 MT/s, and 2666 MT/s. Table 27. Memory specifications DIMM type DIMM rank DIMM capacity RDIMM Single rank Dual rank Dual rank 8 GB 16 GB 32 GB Single processor Minimum RAM Maximum RAM 8 GB 80 GB 16 GB 160 GB 32 GB 320 GB Dual processors Minimum RAM Maximum RAM 16 GB 128 GB 32 GB 256 GB 64 GB 512 GB Storage controller specifications The PowerEdge R740xd2 system supports the following controller cards. 166 Technical specifications
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