HP Pavilion 15-cs3858nd RAM upgrade specifications
The HP Pavilion 15-cs3858nd laptop supports DDR4-SDRAM memory upgrades with a maximum capacity of 16 GB. The system features 2x SO-DIMM slots for memory expansion, accommodating SO-DIMM form factor modules operating at 2666 MHz. Compatible RAM upgrades enable users to enhance the laptop's multitasking performance and overall responsiveness by replacing or supplementing existing memory modules within the specified capacity and specifications.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 2x SO-DIMM |
| Form factor | SO-DIMM |
| Memory type | DDR4-SDRAM |
| Frequency | 2666 MHz |
| Maximum RAM | 16 GB |
| Voltage | 1.2V |
| Number of pins | 260-pin |
| Interface | PC4 |
| PC Speed Rating | PC4-2666 (PC4-21328) |
| Bandwidth | 21.3 GB/s |
| Laptop Release date | 28 May 2020 |
Additional Notes
- The HP Pavilion 15-cs3858nd contains 2 SO-DIMM slots, meaning asymmetrical configurations are possible during the upgrade window. Installing a single module leaves one slot vacant, which prevents dual-channel architecture from activating and reduces effective memory bandwidth by approximately 50 percent.
- DDR4-2666 modules operate at a fixed frequency ceiling for this system. Purchasing faster DDR4 variants (3000 MHz, 3200 MHz) will downclock to 2666 MHz upon installation, making higher-speed modules a cost penalty with no performance gain on this hardware.
- The 16 GB maximum capacity constraint applies to the total addressable memory pool. Each SO-DIMM slot therefore maxes out at 8 GB per module. Purchasing 16 GB single modules will not function, as the system cannot recognize capacities exceeding the firmware-defined limit.
- SO-DIMM form factor requires laptop-specific modules rather than full-size UDIMM desktop RAM. Attempting standard desktop memory will cause physical misalignment and potential contact damage to both the module and motherboard socket due to keying notch positioning differences.
- The dual-slot architecture permits warranty-compliant capacity expansion without component replacement. Removal of factory-installed memory to install aftermarket modules remains a user-serviceable operation, provided anti-static precautions are observed during socket interaction.
- Memory latency performance characteristics at 2666 MHz operate near the lower bound of DDR4 frequency support. Systems with this specification typically exhibit approximately 8-10 nanosecond latency windows, which may create detectable performance limitations in latency-sensitive workloads such as database operations or real-time audio processing.