Lenovo Legion 15ARH05 - RAM Upgrade Guide

The Lenovo Legion 15ARH05 laptop has two memory slots available for RAM upgrades. It can support a maximum of 16GB of memory. The type of RAM used is DDR4 SDRAM, and it comes in the SODIMM format, which is a compact design commonly used in laptops. For optimal performance, it is recommended to use RAM with a clock speed of 3200MHz, also referred to as PC4-25600.
Lenovo Legion 15ARH05 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo Legion 15ARH05 |
| Total memory slots | 2 |
| Maximum RAM | 16GB |
| Memory type | DDR4 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 3200MHz (PC4-25600) |
| Voltage | Low - 1.2V |
| Number of pins | 260-pin |
FAQ about Lenovo Legion 15ARH05 RAM
How many RAM slots does the Legion 15ARH05 have?
It has 2 memory slots total. Pretty standard for gaming laptops in this range.
What's the maximum RAM I can install?
You can go up to 16GB total. That means either 2x8GB sticks or keeping one original stick and adding another to match.
What type of RAM do I need to buy?
You need DDR4 SODIMM modules - the smaller laptop-sized ones, not the full-size desktop sticks. Make sure it's DDR4, not DDR3 or DDR5.
What speed RAM should I get?
3200MHz (also labeled as PC4-25600) is the recommended speed. You could use slower RAM but you'd be leaving performance on the table.
Can I mix different RAM speeds?
Technically yes, but the system will run all RAM at the speed of the slowest stick. So if you have one 2400MHz and one 3200MHz stick, both will run at 2400MHz. Better to match speeds.
Do I need to match the existing RAM exactly?
For best results, try to match capacity, speed, and timings. But mixing brands usually works fine as long as the specs match. If you're unsure, just buy a matched pair and replace both sticks.