FREE DELIVERY ANYWHERE IN THE USA
We accept PO’s from qualified businesses, government agencies, defense, and educational institutions.
0
Contact Us
1-888-352-2298 [email protected]
Home / HP / Server RAM / HP 647881-S21

HP 647881-S21 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory

Part Number: 647881-S21     Brand: HP
Free 2-Day
Shipping $99+
647881-S21 HP Image

647881-S21 Price & Availability

New Condition · Ready to Ship
Chat For Price
★ 6% Off Applied at Checkout
★ Free US 2-Day Express Shipping Over $99
Condition

HP 647881-S21 Specs

▲
Brand
HP
Capacity
16GB
Memory Speed
1333MHz
Data Integrity Check
ECC
Voltage
1.35v
Latency Timing
CL9
Pins
240 Pin
Memory Technology
DDR3
Memory Form Factor
DIMM

HP 647881-S21 Description

▼

Upgrade your server’s performance with the HP 647881-S21 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory, designed specifically for a wide range of HP ProLiant servers including the DX, DL, ML, SL, BL, XL, and CL series. This high-capacity memory module is ideal for data centers, enterprise environments, and any application requiring reliable and efficient memory performance. Whether you’re running virtualization, database management, or heavy multitasking workloads, this ECC DDR3 memory ensures data integrity and system stability.

Let’s take a closer look at the key specifications that make this memory module a great choice for your server needs:

  • Brand: HP – trusted for quality and compatibility
  • Capacity: 16GB – ample memory for demanding applications
  • Memory Speed: 1333MHz – balanced speed for performance and power efficiency
  • Data Integrity Check: ECC (Error-Correcting Code) – reduces data corruption risks
  • Voltage: 1.35v – optimized for lower power consumption
  • Latency Timing: CL9 – ensures quick response times
  • Pins: 240 Pin – standard DIMM form factor for easy installation
  • Memory Technology: DDR3 – reliable and widely supported technology
  • Memory Form Factor: DIMM – compatible with most server motherboards

If you need compatible spare parts or alternatives, consider the following HP memory modules that match similar specifications and performance:

With its robust ECC technology and compatibility across multiple ProLiant server families, the HP 647881-S21 memory module is a reliable upgrade to enhance your server’s speed, stability, and overall efficiency.

Trusted by 5000+ IT Managers, System Integrators & Data Center Experts
Excellent
289 reviews on
Reviews.io

Easy Returns

"We purchased the wrong part by mistake. Boost hardware made it easy to return and quickly issued me a refund."

Even P.

Lowest Price By Far

"We were able to purchase 10x HP 782995-001 for 25% less than the next lowest price. Very impressed with the quick shipping and lack of issues."

Bobbie I

Excellent Customer Service

"Excellent customer service; they got in touch with me right away. They upgraded my next order to free 2-day shipping."

Everett M.
ⓘ We found 29 subs for the HP 647881-S21
100% Match
HP 627808R-B21 16GB 1333MHz 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
100% Match
HP 647653-H81 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
100% Match
HP AM387B 16GB 1333 MHz 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
100% Match
HP 500662-16G 16GB 1333 MHz 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
100% Match
Micron MT36JSF2G72PZ-1G4E1 16GB 1600MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
100% Match
HP 647883R-B21 16GB 1333MHz 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 678285-071 16GB 1333MHz 4Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 4Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 647881-B21 16GB 1333MHz 2Rx4 ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 627812-B21 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 628974-081 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP AM387A 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP AM231A 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 RDIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 647653-M81 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 647653-08S 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 647653-08H 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 628974-001 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 739928-001 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 708395-001 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 627812-S21 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 687463-001 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 647652-181 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 647883-S21 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 687464-001 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 632204-001 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
98% Match
HP 647883-B21 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
96% Match
HP 647901-S21 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
+ Buffered/Registered: Yes
96% Match
HP 664692-001 16GB 1333MHz 2Rx4 240 Pin ECC DDR3 Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
+ Buffered/Registered: Non
96% Match
HP 647653-181 16GB 1333 MHz 2Rx4 240 Pin ECC DDR3 DIMM Memory
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
+ Buffered/Registered: Yes
96% Match
HP KTH-PL313LV/16G 16GB 1333Mhz DIMM-1333MHz ECC Buffered
✓ Memory Technology: DDR3
✓ Capacity: 16GB
✓ Brand: HP
✓ Voltage: 1.35v
✓ Pins: 240 Pin
✓ ECC: ECC
✓ CAS Latency: CL9
+ Chipset: 2Rx4
✓ Memory Form Factor: DIMM
✓ Memory Speed: 1333MHz
+ Buffered/Registered: Yes

Customer Reviews

4.8
★★★★★
289 reviews
94% recommend
5
(253)
4
(21)
3
(9)
2
(2)
1
(4)
G
Gary B.
2025-06-12
✓ Verified Buyer
★★★★★
The sales guy at Boost Hardware was super knowledgeable. He helped me find the right part for my older Proliant server.
E
Even P.
2025-04-09
✓ Verified Buyer
★★★★★
We purchased the wrong part by mistake. Boost hardware made it easy to return and quickly issued me a refund.
M
Matthew S.
2025-04-08
✓ Verified Buyer
★★★★★
Good purchasing experience.
A
Aaron P.
2025-04-04
✓ Verified Buyer
★★★★★
The refurbished drives we ordered were in perfect condition.
M
Mitch F.
2025-04-04
✓ Verified Buyer
★★★★★
BoostHardware always has what I need at reasonable prices.
D
David P.
2025-03-28
✓ Verified Buyer
★★★★★
Delivered on time.
L
Louis J.
2025-03-26
✓ Verified Buyer
★★★★★
Found the hard drives I needed. The ordering process was smooth and fast. Got the drives next day.
D
Darryl P.
2025-03-25
✓ Verified Buyer
★★★★★
Excellent personal service, thanks Scott!
L
Lindsay M.
2025-03-21
✓ Verified Buyer
★★★★★
Good price on the drives we needed.

Expert Sales Support

Looking for a bulk discount? Call 1-888-352-2298 and a rep will assist you with part no. 647881-S21.

Availability

New Condition: Chat For Price

Delivery Options

Overnight and Express Delivery in USA
Get within 1 to 3 days

$49 Ground Shipping To Canada

International Delivery Options Available
Contact Us For Detail

Payment Options

All Credit Cards Accepted + PayPal

PO Accepted from Qualified Businesses and Government Entities

Return & Warranty

30 days return

Warranty vary by product please see our Policies page