HPE 2GB (1x2GB) Single Rank x8 PC3L-10600 (DDR3-1333) Unbuffered CAS-9 Low Power Memory Kit
Fits 19 HPE ProLiant server models. See the list
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Part number cross-reference
- Part number
- 647905-B21
Overview
This item, 647905-B21, is the HPE option part number for the product described as 2GB (1x2GB) Single Rank x8 PC3L-10600 (DDR3-1333) Unbuffered CAS-9 Low Power Memory Kit. Further details below.
Improve your server's base performance with this HPE 2GB (1x2GB) DDR3-1333 Unbuffered Memory Kit. This memory module offers a foundational boost in system speed and responsiveness for essential applications. Designed for low-power operation, this item provides an energy-conscious solution.
This 2GB ECC Unbuffered DIMM operates at 1333MHz (PC3L-10600) with a CAS Latency of 9. It's compatible with a range of HPE ProLiant servers including but not limited to DL380p Gen8, DL360p Gen8, DL380e Gen8, DL360e Gen8, DL160 Gen8, BL460c Gen8, ML350p Gen8, and MicroServer Gen8 servers.
HPE Option Part #: 647905-B21
HPE Spare Part #: 664694-001
HPE Assembly Part #: 647656-071
PRODUCT SPECIFICATIONS FOR 647905-B21:
- Memory Size: 2 GB
- Memory Type: DIMM
- Connection Type: DDR3 SDRAM
- Memory Speed: 1333 MHz
- Dimensions: 2.8 x 6.5 x 0.5 inches
- Item Weight: 1.4 ounces
- CAS Latency: CL9
- Error Checking: ECC
- Signal Processing: Unbuffered
- Memory Standard: DDR3-1333/PC3-10600
- Number of Pins: 240-pin
COMPATIBLE WITH:
PROLIANT BL SERIES
PROLIANT DL SERIES
PROLIANT ML SERIES
PROLIANT SL SERIES
PROLIANT WS SERIES
PROLIANT XL SERIES
OTHER HPE MACHINES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
HPE PARTSURFER INFO FOR 647905-B21
| Spare PN | Description | |
|---|---|---|
 | 664694-001 | 2GB, 1333MHz, PC3L-10600E-9, DDR3, single-rank x8, 1.35V, unbuffered with ECC dual in-line memory module (UDIMM) |
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
Compatible servers
Each server opens that model's memory page, with its slot rules and a kit picker.
- DL360p Gen8Memory page
- DL380p Gen8Memory page
- ML350p Gen8Memory page
- BL460c Gen8Memory page
- SL230s Gen8Memory page
- SL250s Gen8Memory page
- ML350e Gen8Memory page
- BL420c Gen8Memory page
- DL160 Gen8Memory page
- DL320e Gen8Memory page
- DL360e Gen8Memory page
- DL380e Gen8Memory page
- ML310e Gen8Memory page
- DL320e Gen8 v2Memory page
- MicroServer Gen8Memory page
- ML310e Gen8 v2Memory page
- SL270s Gen8Memory page
- WS460c Gen8Memory page
- XL220a Gen8 v2Memory page
Part numbers
Every number below identifies this same part. Match any of them to the label on the part you are replacing.
Questions about 647905-B21
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.
Ordered the wrong part?
It is the customer's responsibility to verify compatibility before ordering. A part ordered by mistake can be returned for a refund, less a 25% restocking fee, within 5 business days of receipt. Freight is not refunded, and factory-sealed items can only be returned unopened. Check Compatible servers before you order.
Start a return or claim
Complete the RMA request form and send it to us, or choose Warranty or return on the contact form.
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647905-B21 HPE 2GB (1x2GB) Single Rank x8 PC3L-10600 (DDR3-1333) Unbuffered CAS-9 Low Power Memory Kit
Filling a whole server?
Each server's memory page works out how many modules a capacity takes and where they go. For a full bill of materials, send it with your server model and we reply with pricing and availability within 24 hours.
