DDR4 desktop RAM (DIMM) prices
DDR4 desktop RAM (DIMM) is the memory your computer uses to hold the programs and files you're actively working on. More memory means smoother multitasking and fewer slowdowns. Before you buy, check three things: the form factor (desktop boards take full-size DIMMs, not the shorter SO-DIMMs), the interface (your system must support DDR4, not DDR3 or DDR5), and compatibility — capacity per stick, the number of slots, and any limits listed in your system's documentation. This page compares current prices for every size across stores and shows which devices each module fits.
- Lowest new $78.00
- Lowest used or refurbished $21.99
- Lowest per GB $2.75
- Compared 5 products
Every size compared
Best value right now
| $/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 |
| $4.38 | $140.00 | 2 × 16 GB | Corsair Vengeance LPX 32GB Kit (2 × 16GB) DDR4-3200 CL16 DDR4-3200 CL16 DIMM | Used | eBay US +2 | View deal |
| $5.25 | $84.00 | 2 × 8 GB | Corsair Vengeance LPX 16GB Kit (2 × 8GB) DDR4-3200 CL16 DDR4-3200 CL16 DIMM | Used | eBay US +2 | View deal |
| $6.22 | $199.00 | 2 × 16 GB | Corsair Vengeance LPX 32GB Kit (2 × 16GB) DDR4-3200 CL16 DDR4-3200 CL16 DIMM | New | eBay US +2 | View deal |
| $7.81 | $500.00 | 2 × 32 GB | G.Skill Ripjaws V 64GB Kit (2 × 32GB) DDR4-3600 CL18 DDR4-3600 CL18 DIMM | New | eBay US | 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
- Check your system's limits first. Look up your exact model or motherboard and note the maximum total memory, the maximum capacity per slot, and how many slots you have. Staying within those limits is the single easiest way to avoid a return.
- Install modules in the recommended arrangement. Many desktop boards use memory in pairs to reach their best bandwidth, and the slots matter. Your manual tells you which slots to fill first, and it's usually best to leave room for a later upgrade.
- Keep matched modules together. If you're adding to memory you already own, try to match the same type and similar specifications; when modules differ, the memory generally runs at the slowest of them. Deciding between new and used? Used memory can work well, but check the seller's return policy and whether the modules have been tested.
Questions
Will this RAM fit my computer?
It will if your system uses DDR4 desktop DIMMs. Two quick checks: desktop boards use full-size DIMMs, while laptops and some mini PCs use much shorter SO-DIMMs, and DDR4 modules don't fit DDR3 or DDR5 slots. The compatibility list on this page shows the 38 devices in our catalog that accept these modules, including models like the ASUS PRIME B550-PLUS, Dell OptiPlex 3000 Small Form Factor, and Dell PowerEdge R240.
Does memory speed matter — which DDR4 speed should I choose?
Memory is rated at a speed such as 2666 or 3200, but your system only runs it as fast as its processor and board support. A faster module can still work at a lower speed. In practice, check what your model supports and don't pay extra for speed you can't use — capacity is usually the better upgrade.
Can I mix this with the memory I already have, and is used RAM a good idea?
Mixing is often possible when the type matches and the specifications are similar, though the memory generally runs at the slowest module's speed. Matched modules of the same capacity are the most predictable setup. Used memory is a reasonable way to save, as long as it's tested or comes with a return policy and warranty you're comfortable with.
How much memory do I need?
For everyday browsing, streaming, and office work, 8 GB is a workable starting point, and 16 GB is what many people land on for comfortable everyday use. 32 GB helps with heavier multitasking, larger creative projects, and virtual machines, while 64 GB suits the most demanding workloads. Whatever you choose, check that your system supports the capacity and that your slots can reach it.