Cheapest 8 GB DDR4 laptop RAM (SO-DIMM)
8 GB DDR4 SO-DIMM is a memory module that gives your laptop working space for open apps, browser tabs, and everyday files. Before you buy, check three things: the form factor (SO-DIMM, not full-size desktop DIMM), the DDR generation (DDR4, not DDR3 or DDR5), and whether your specific laptop supports this module's speed and maximum capacity. Matching all three keeps you from ordering a module your machine physically can't use or won't run at its full potential.
- Lowest new $58.05
- Lowest used or refurbished $27.82
- Lowest per GB $3.48
- Compared 1 product
Fits these devices
- Dell Latitude 5420
- Dell Inspiron 15 3520
- Dell Latitude 5440
- Dell Latitude 5540
- Acer Nitro 5 AN515-57 (Intel)
- Dell OptiPlex 3080 Micro
- Dell OptiPlex 7000 Micro
- Dell XPS 15 9510
- Lenovo ThinkPad T480
- Framework Laptop 13 (Intel 11th–13th Gen)
- Dell XPS 15 9500
- Dell Latitude 5430 (Intel 12th Gen)
52 devices in our catalog take this part. Search yours on the home page.
Before you buy
- Check how many memory slots your laptop has and how many are already occupied. Some models solder RAM directly to the board and leave no slots; others have one or two free slots. Knowing this tells you whether you can add a module or need to swap out the one that's already inside.
- Match the speed rating (measured in MHz) to what your laptop supports. A faster module usually still works — your system will run it at the highest speed it handles — but you won't get extra performance from a higher number the machine can't reach.
- If you're adding a second module alongside an existing one, try to match its capacity and speed. Mixed configurations generally still work, but the pair may fall back to single-channel mode instead of dual-channel, which can slow memory performance in some workloads.
Questions
Will an 8 GB DDR4 SO-DIMM fit my laptop?
It fits only if your laptop uses SO-DIMM DDR4 slots. Many laptops from the DDR4 generation accept this format, but some thin or compact models solder their memory to the motherboard and have no free slot at all. Your laptop's service manual or our compatibility list tells you which apply to your specific model.
What speed of DDR4 RAM should I get for my laptop?
Start with the fastest speed your laptop supports — often 2666 MHz or 3200 MHz for DDR4 machines. You can install a module rated for a higher speed, but your system will clock it down to the supported rate. There's no downside to a faster module besides potentially paying more for capability you won't use.
Is it safe to buy used or refurbished laptop RAM?
Used or refurbished RAM can work well and cost less, but it's wise to buy from a seller with a clear return policy and some warranty. Memory doesn't have moving parts and often lasts a long time, so many used modules are fine. Before installing, run a memory test tool to confirm the module is healthy.
Is 8 GB of RAM enough for a laptop?
For everyday tasks — web browsing, office documents, video streaming — 8 GB usually gets the job done. If you keep many browser tabs open at once, run virtual machines, edit large photos or videos, or play modern games, 16 GB or more gives you more comfortable headroom. How much you need depends on what you actually run, not on any single rule.