Dell R820 Technical Specifications, Two or four Intel Xeon processor E5-4600 product family

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Technical Specifications

Processor

Processor type	Two or four Intel Xeon processor E5-4600 product family
Expansion Bus
Bus type	PCI Express Generation 3
Expansion slots using riser card:
Riser 1	(Slot 1) One full-height, half-length x16 connector
	(Slot 2) One full-height, half-length x16 connector
Riser 2	(Slot 3) One low profile, half-length x16 connector
	(Slot 4) One low profile, half-length x16 connector
	(Slot 5) One low profile, half-length x16 connector
Riser 3	(Slot 6) One full-height, half-length x16 connector
	(Slot 7) One full-height, half-length x8 connector
Memory
Architecture	800 MT/s, 1066 MT/s , 1333 MT/s, or 1600 MT/s registered
	or unbuffered Error Correcting Code (ECC) DIMMs
	Support for Advanced ECC or memory-optimized
	operation
Memory module sockets	Forty-eight 240-pin
Memory module capacities
LRDIMMS	32 GB quad-rank
RDIMM	2 GB (single-rank), 4 GB (single- and dual-rank), 8 GB
	(dual-rank), 16 GB (dual-rank), 32 GB (quad-rank)
UDIMM	2 GB (single-rank) and 4 GB (dual-rank)
Minimum RAM	2 GB
Maximum RAM
LRDIMMS	Up to 1.5 TB
RDIMM	Up to 768 GB
UDIMM	Up to 128 GB

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