HPE 8GB (1x8GB) Single Rank x4 PC3-12800R (DDR3-1600) Registered CAS-11 Memory Kit
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Part number cross-reference
- Part number
- 664691-001
Overview
This item, 664691-001, is the HPE spare part number for the product described as 8GB (1x8GB) Single Rank x4 PC3-12800R (DDR3-1600) Registered CAS-11 Memory Kit. Further details below.
Boost your server's capabilities with this 8GB DDR3-1600 Registered memory module. Operating at a speedy 1600MHz, this single-rank DIMM delivers improved performance for demanding applications. Equipped with ECC data integrity, it ensures data accuracy and system stability for critical operations.
This 8GB PC3-12800R module is an excellent upgrade for various HPE ProLiant Gen8 servers, including but not limited to the DL380p Gen8, DL360p Gen8, DL380e Gen8, DL560 Gen8, BL460c Gen8, and ML350p Gen8. The registered design of this DIMM (RDIMM), combined with a CAS Latency of CL11, makes this item an ideal choice for enhancing virtualization, database management, and other memory-intensive workloads.
HPE Option Part #: 647899-B21
HPE Spare Part #: 664691-001
HPE Assembly Part #: 647651-081
PRODUCT SPECIFICATIONS FOR 664691-001:
- CAS Latency: CL11
- Chips Organization: X4
- Data Integrity Check: ECC
- Form Factor: DIMM 240-pin
- Memory Specification Compliance: PC3-12800
- Memory Speed: 1600 MHz
- RAM Features: Single Rank
- Registered or Buffered: Registered
- Storage Capacity: 8 GB
- Technology: DDR3 SDRAM
- Upgrade Type: System specific
- Form Factor: DIMM 240-pin
- Type: Memory
- Memory for (processor type): Intel
- DIMM type: RDIMM
- DIMM capacity: 8GB
- DIMM rank: Single
- Dimensions (W x D x H): 3.5 x 7.8 x 0.75 in (8.89 x 19.81 x 1.91 cm)
- Weight: 1 lb (0.45 kg)
COMPATIBLE WITH:
PROLIANT BL SERIES
PROLIANT DL SERIES
PROLIANT ML SERIES
PROLIANT SL SERIES
PROLIANT WS SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
HPE PARTSURFER INFO FOR 664691-001 (647899-B21)
| Spare PN | Description | |
|---|---|---|
 | 693871-001 | 8GBPC3-12800R registered synchronous dynamic random access memory (SDRAM) dual data rate (DDR3) mode, dual in-line memory module (DIMM), 1Gx72 |
| 664691-001 | 8GB, 1600MHz, PC3-12800R-11, DDR3, single-rank x4, 1.50V, registered dual in-line memory module (DIMM) |
Last updated: 3/24/2026
Other sizes in this family
| Part number | Capacity | Type | Rank | Price | Availability |
|---|
Working out how many you need? Each server's memory page counts the modules for the capacity you want: see Compatible servers.
Specifications
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Questions about 664691-001
Warranty and returns
5-year replacement warranty
Covered against hardware failure for 5 years from the date of purchase. While HPE's own warranty runs, HPE replaces a failed part through the HPE Enterprise Support Center. After that, send it back to us for a working replacement; you ship it to us and we pay Ground or Economy shipping on the replacement.
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664691-001 HPE 8GB (1x8GB) Single Rank x4 PC3-12800R (DDR3-1600) Registered CAS-11 Memory Kit
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