What Is Onboard Memory and How Is It Different from DIMM Memory?

When choosing a laptop, memory (RAM) plays a major role in performance. Two common types you’ll encounter are onboard memory and DIMM memory, and the main difference between them comes down to design and upgradeability.

What Is Onboard Memory?

Onboard memory (also known as soldered RAM) is permanently attached to the motherboard. It is commonly used in thin and lightweight laptops to save space and improve power efficiency. Because it is fixed in place, it cannot be upgraded or replaced after purchase.

Onboard memory typically uses LPDDR5 or LPDDR5X, which are designed for lower power consumption and higher efficiency.

This type of memory can be found in devices such as:

• Microsoft Surface Laptop 7
  

• HP OmniBook 17-inch (RTX 4050)
  

What Is DIMM Memory?

DIMM memory comes in removable modules installed into dedicated memory slots. It is widely used in desktops and performance-focused laptops, allowing users to upgrade or expand RAM as needed.

DIMM memory commonly uses DDR5, offering high speeds and better performance for demanding workloads.

Popular examples from our lineup include:

• Dell Alienware Area-51
  

• Acer Predator Helios 16 OLED (RTX 5090)
  

• Lenovo Legion Pro 7 (RTX 5080)
  

Key Differences

• Upgradeability: Onboard memory is fixed; DIMM memory is upgradeable

• Design: Onboard memory enables thinner laptops

• Power Efficiency: LPDDR5/LPDDR5X is more power-efficient than DDR5

• Longevity: DIMM-based systems offer better long-term flexibility

Which Should You Choose?

Choose onboard memory (LPDDR5/LPDDR5X) for portability and battery life. Choose DIMM memory (DDR5) if you need upgrade options or run memory-intensive applications. Some laptops combine both for a balanced approach.

Final Thoughts

Onboard memory using LPDDR5 or LPDDR5X focuses on efficiency and compact design, while DDR5 DIMM memory prioritizes flexibility and future upgrades. Understanding the difference helps you choose the right laptop for your needs.

If you need further assistance, our team is ready to help you choose the right device.
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