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Reliable 4GB DDR4-2400 non-ECC SO-DIMM for business laptops.
Y7B55AA
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4GB (1x4GB) DDR4-2400 nECC SO-DIMM - 4 GB - 1 x 4 GB - DDR4...
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Y7B55AA
- Description:
- 4GB (1x4GB) DDR4-2400 nECC SO-DIMM - 4 GB - 1 x 4 GB - DDR4 - 2400 MHz - Black - Green
- Rating:
Added to cart 28 times recently
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In stock - Ready to Ship
- Brand:
- Hp
- GTIN:
- 766168891859
- Condition:
3 Year Extended Warranty
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Y7B55AA Overview
Y7B55AA is a high-performance DDR4 UDIMM memory module designed for modern desktop and workstation builds. It operates at 3200 MHz with a CAS latency of CL16 and a voltage of 1.2V, and is available as a single-channel kit. This non-ECC, unbuffered memory is engineered without RGB lighting but includes an integrated heatspreader to enhance thermal management, ensuring reliable performance for gaming and high-demand applications.
Y7B55AA further distinguishes itself by offering robust compatibility with desktop and workstation platforms, making it a versatile choice for users who require stability under load. The module’s precise engineering, from its optimized speed and low latency to its efficient thermal solution, targets enthusiasts focused on overclocking and sustained performance in modern computing environments.
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Request bulk order quote for Y7B55AA for additional pricing. Browse the full Hp Memory & Ram series or explore all Hp products.
Y7B55AA Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 16 GB
- Compatible Platforms
- Desktop
- Compatible Systems
- Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 3200 MHz
- Operating Temperature
- 0-85°C
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- Voltage
- 1.2V
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- XMP Support
- Intel XMP 2.0
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Intel Platform Support
- Intel 12th Gen
- AMD Platform Support
- AMD Ryzen 5000
- Use Case
- Gaming
- Product Name
- Y7B55AA DDR4 UDIMM Memory Module
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.5 inches
- Weight
- 0.3 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| Y7B55AA |  Y7B57AA |  P1N53AA |  1CA75AA |  286H8AA#AC3 | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 16 GB | 16 GB | 8 GB | 16 GB | 16 GB |
| Compatible Platforms | Desktop | Desktop | Desktop | Desktop | Desktop |
| Compatible Systems | Workstation | Workstation | Workstation | N/A | Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Dual Channel | Dual Channel | Single Channel | Dual Channel |
| Speed | 3200 MHz | 3200 MHz | 3200 MHz | 3200 MHz | 3200 MHz |
| Operating Temperature | 0-85°C | N/A | N/A | N/A | N/A |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL16 | CL16 |
| Voltage | 1.2V | 1.35V | 1.35V | 1.35V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | Intel 12th Gen | Intel 12th Gen | Intel 12th Gen | Intel 12th Gen | Intel 12th Gen |
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 |
| Use Case | Gaming | Gaming | Gaming | Gaming | Gaming |
| Product Name | Y7B55AA DDR4 UDIMM Memory Module | Y7B57AA High Performance DDR4 Memory Module | P1N53AA DDR4 8GB 3200MHz UDIMM | 1CA75AA DDR4 16GB 3200MHz UDIMM Memory Module | 286H8AA#AC3 Memory Module |
| Height | 1.2 inches | 1.2 inches | 1.2 inches | 1.18 inches | 1.5 inches |
| Width | 5.3 inches | 5.3 inches | 3.0 inches | 5.25 inches | 5.3 inches |
| Depth | 0.5 inches | 0.5 inches | 0.2 inches | 0.13 inches | 0.5 inches |
| Weight | 0.3 lbs | 0.3 lbs | 0.1 lbs | 0.15 lbs | 0.3 lbs |
Reviews & Ratings
A
Amina Farouk
4
Improved responsiveness and stable performance.
L
Luca Rossi
5
Seamless compatibility across multiple systems.
T
Tara Brooks
5
Dependable RAM upgrade for mobile professionals.
J
Jorge Castillo
5
Consistent speeds for everyday workloads.
Questions & Answers
What are the key specifications of the HP Y7B55AA 4GB DDR4-2400 nECC SO-DIMM?
The HP Y7B55AA is a 4GB DDR4 2400 MHz non-ECC SO-DIMM module in a single-rank, single-channel configuration, with a 260-pin form factor and low-voltage operation.
Which systems are compatible with HP Y7B55AA 4GB DDR4-2400 nECC SO-DIMM?
This memory module is compatible with laptops, small form factor desktops, and HP workstations that support 260-pin DDR4 SO-DIMM at 2400 MT/s and non-ECC configurations.
Can I mix the HP Y7B55AA 4GB module with my existing RAM?
Yes. To ensure stability, match DDR4 speed (2400 MT/s), voltage (1.2 V), capacity (4GB), and non-ECC SO-DIMM form factor when mixing modules.
How do I install the HP Y7B55AA 4GB DDR4-2400 nECC SO-DIMM?
Power off the system, remove the battery (if applicable), open the memory compartment, align the notch on the SO-DIMM with the slot, insert at a 30° angle, press down until it clicks into place, then reassemble.
Does the HP Y7B55AA support ECC error correction?
No. The Y7B55AA is a non-ECC (nECC) module, so it does not provide error-correcting code functionality.
What performance improvement can I expect with this 4GB DDR4-2400 module?
Upgrading to DDR4-2400 can improve system responsiveness, multitasking efficiency, and data throughput by up to 20% compared to DDR4-2133 modules, depending on workload.
Is the HP Y7B55AA covered by a warranty?
Yes. HP provides a limited lifetime warranty for this memory module, covering defects in materials and workmanship under normal use.
What is the latency of the HP Y7B55AA 4GB DDR4-2400 SO-DIMM?
This module operates at CL17 latency (17-17-17 timings) when running at its rated 2400 MT/s speed.
Can I overclock the HP Y7B55AA DDR4-2400 memory module?
Overclocking is not recommended; the module is validated for 2400 MT/s at 1.2 V. Exceeding specifications may cause system instability and void warranty.
How much power does the HP Y7B55AA DDR4-2400 consume?
At its standard 1.2 V operating voltage, typical power consumption is approximately 1.2 W under load, with lower idle power draw.
Can the HP Y7B55AA module be used in RAID or virtualization setups?
Yes, for basic RAID and virtual machine applications, but since it is non-ECC, it may not be ideal for mission-critical enterprise environments requiring error correction.
What thermal characteristics does the HP Y7B55AA DDR4-2400 module have?
This SO-DIMM uses standard JEDEC DRAM thermal profiles, with an operational temperature range of 0 °C to 85 °C and no active heat spreader.
How do I verify the HP Y7B55AA module is recognized by my system?
After installation, enter the BIOS/UEFI memory settings or use a system information tool (e.g., CPU-Z) to confirm 4GB capacity, 2400 MT/s speed, and DDR4 type.
Does the HP Y7B55AA support dual-channel memory mode?
Yes. When paired with an identical SO-DIMM (same speed, capacity, and timing), it will operate in dual-channel mode for improved bandwidth.
Where can I purchase genuine HP Y7B55AA 4GB DDR4-2400 SO-DIMM?
Genuine modules are available through HP’s online store, authorized resellers, and certified retail partners to ensure authenticity and warranty coverage.
What should I do if my HP Y7B55AA memory module is not detected?
Reseat the module, verify BIOS settings, test it in a different slot or system, and contact HP support if issues persist for replacement under warranty.