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Use HP server memory options to improve the performance of your ProLiant servers and data centers.
Infrastructure matters. It's the foundation for all the information and applications of your business. You trust ProLiant quality for its reliability and performance to keep your infrastructure running. Server memory is one of the most critical components; even the slightest defect can result in downtime that could shut down your business. Choose HP server memory options for the same quality, integration, reliability and confidence that come with ProLiant.
HP Proliant server memory is an HP Qualified Option, which means every genuine HP DIMM has been through our rigorous qualification process to ensure its compatibility, performance, and reliability.
Find the compatible HP DDR2 and DDR3 memory upgrades and options for your ProLiant server with the HP Memory Finder.
DDR3
- With the new Intel-based G6 ProLiant Servers, the next generation of DDR memory comes to life with DDR3. In addition to the many G6 improvements, DDR3 memory provides many enhancements over DD2 memory.
- Bandwidth doubles from 667MHz (DDR2) up to 1333MHz (DDR3). With 6 channels for DDR3, this is like driving faster & having more lanes to drive in.
- G6 servers have up to 18 DIMM slots, allowing larger memory footprints.
- Reduced power architecture, due to lower core voltage (from DDR2 at 1.8V to 1.5V with DDR3).
- Flexibility to choose DIMM type
- Registered RDIMMs
- Unbuffered UDIMMs
- HP ProLiant DDR3 Memory Configuration Tool
DDR3 performance
- System performance will vary depending on several factors (Server model, CPU capability, DIMM type and number of DIMM’s populated) and result in the following typical bandwidth speeds;
- Dual-rank RDIMM
- 1 DIMM Per Channel @ 1333MHz
- 2 DPC @ 1066MHz – 2 DPC @ 1333MHz is supported with a ROM update via ROM Based Setup Utility (RBSU) on select servers.
- 3 DPC @ 800MHz
- Quad-rank RDIMM
- 1 DPC @ 1066MHz
- 2 DPC @ 800MHz
- 3 DPC not supported
- Single and Dual-rank UDIMM
- 1 DPC @ 1333MHz
- 2 DPC @ 1066MHz – 2 DPC @ 1333MHz is supported with a ROM update via ROM Based Setup Utility (RBSU) on select servers.
- 3 DPC not supported
DDR3 DIMM comparison
- Registered DIMMs offer higher capacities, memory register
support, address error detection
- Unbuffered DIMMs offer smaller capacities, lower price points, basic ECC
- If uncertain, go with RDIMMs for more flexibility
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DDR3 memory comparison |
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RDIMMs |
UDIMMs |
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Maximum DIMM capacity |
16GB |
2GB |
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Maximum G6 server capacity |
192GB (12 slots; 16GB quad rank RDIMMs) |
24GB (12 slots; 2GB dual rank DIMMs) |
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Maximum # of DIMMs/channel |
3 dual rank |
2 dual rank |
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Low power option |
4GB quad rank DIMM |
N/A |
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Address error detection |
Yes |
No |
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DIMM power |
~1 watt more (due to register) |
~1 watt less (due to no register) |
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Printable version
