Cheapest 8 GB DDR4 desktop RAM (DIMM)
8 GB DDR4 desktop RAM is a full-size memory module (DIMM) that adds working memory to a desktop PC or small server. It holds the data your processor is using right now, so more memory means smoother multitasking and fewer slowdowns. Before you buy, check the form factor (desktop DIMM, not laptop SODIMM), the interface (DDR4), and whether your board lists the module as compatible. Below you can compare prices and see the 37 devices in our catalog that accept this part.
- Lowest new $78.00
- Lowest used or refurbished $21.99
- Lowest per GB $2.75
- Compared 2 products
| $/GB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $2.75 | $21.99 | 8 GB | Micron 8GB DDR4-2400 UDIMM DDR4-2400 DIMM | Used | eBay US +2 | View deal |
| $9.75 | $78.00 | 8 GB | Lenovo 8GB DDR4-2400 UDIMM (FRU) DDR4-2400 DIMM | New | eBay US | View deal |
| $16.52 | $132.16 | 8 GB | Lenovo 8GB DDR4-2400 UDIMM (FRU) DDR4-2400 DIMM | Used | eBay US +2 | View deal |
Fits these devices
- ASUS PRIME B550-PLUS
- Dell OptiPlex 7010 Small Form Factor
- Dell OptiPlex 3000 Small Form Factor
- ASUS ROG STRIX B550-F GAMING WIFI II
- ASRock B550M Pro4
- Dell OptiPlex 3080 Small Form Factor
- ASUS TUF GAMING B550-PLUS WIFI II
- Dell OptiPlex 3070 Small Form Factor
- Dell OptiPlex 5070 Small Form Factor
- Dell PowerEdge R240
- Dell OptiPlex 5050 Small Form Factor
- Dell PowerEdge R340
38 devices in our catalog take this part. Search yours on the home page.
Before you buy
- Match form factor and generation first. Desktop modules are DIMMs; laptops use shorter SODIMMs. Each DDR generation has its own notch position, so DDR4 will not seat in a DDR3 or DDR5 slot and will not work in a DDR3 or DDR5 board.
- Check your board's limits before choosing capacity. Look at how many memory slots you have, how many are free, and the maximum capacity per slot and in total. The board's supported memory list is the best source if you want certainty.
- Think about matching modules rather than one fast stick. Most desktop boards run memory in dual channel when two equal modules are installed. If you are adding to memory you already own, try to match its speed and timings so the system can run both at a stable setting.
Questions
Will this 8 GB DDR4 DIMM fit my computer?
It fits a desktop or server board with DDR4 DIMM slots. Laptops and mini PCs usually take SODIMM modules instead, which are shorter and will not fit a desktop slot. Check the form factor and the DDR generation of your board before ordering — the notch on the module is a quick physical check that the generation matches.
What memory speed should I choose?
DDR4 modules are rated at different speeds in MHz. Your board and processor determine the top speed that is actually used, and modules can usually run slower than their rating. Buying a faster rating does not automatically make the system faster, so check which speeds your board supports and pick from those.
Is used or refurbished RAM worth buying?
Memory is a common part to buy used, but the risk is that a fault can cause crashes or data errors that are hard to trace. If you buy used, check the return window and ask whether the module has been tested. New modules usually include a manufacturer warranty, which is the main practical difference.
Is 8 GB enough, or should I go bigger?
8 GB is enough for everyday browsing, documents and light multitasking. Video editing, virtual machines, large design files and many modern games call for more. Our site compares 8 GB, 16 GB, 32 GB and 64 GB so you can see how the cost per module changes and decide whether to start at 8 GB or go larger now.