Dell Inspiron 15 3511 (Intel 11th Gen) upgrades
Released 2021 · on sale
The CPU is a soldered (BGA) ULV chip and is not upgradable; this is based on general knowledge, since Dell's pages don't state the socket. The laptop also has an SD card reader (SD/SDHC/SDXC), which is not listed as an upgrade slot. Check your exact configuration (battery, graphics, drive) against the service tag.
Upgrade guide → What fits, step by step, and official documents.
- SODIMM memory slot: 2 × DDR4 SO-DIMM · up to 16 GB total · 3200 MT/s
- M.2 2230/2280 SSD slot: SSD M.2 2230 / M.2 2280 (NVMe) · up to 2 TB
- 2.5" SATA drive bay: HDD 2.5" (SATA) · up to 2 TB
SODIMM memory slot 2 × DDR4 SO-DIMM · up to 16 GB total · 3200 MT/s
Dell lists 16 GB as the maximum total, though 16 GB modules are listed per slot. 2x16 GB is not officially supported. Runs at 2666 MT/s with integrated graphics and 3200 MT/s with discrete graphics. Some units ship with both slots filled.
| $/GB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $3.48 | $27.82 | 8 GB | Crucial 8GB DDR4-2400 SO-DIMM DDR4-2400 CL17 SO-DIMM | Used | eBay US +2 | View deal |
| $4.25 | $67.99 | 16 GB | Crucial 16GB DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | New | eBay US +2 | View deal |
| $4.37 | $69.99 | 16 GB | Crucial 16GB DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | Used | eBay US +2 | View deal |
| $7.26 | $58.05 | 8 GB | Crucial 8GB DDR4-2400 SO-DIMM DDR4-2400 CL17 SO-DIMM | New | eBay US +2 | View deal |
| $7.75 | $31.00 | 4 GB | Crucial 4GB DDR4-2666 SO-DIMM DDR4-2666 CL19 SO-DIMM | New | eBay US +2 | View deal |
| $8.94 | $35.78 | 4 GB | Crucial 4GB DDR4-2666 SO-DIMM DDR4-2666 CL19 SO-DIMM | Used | eBay US +1 | View deal |
M.2 2230/2280 SSD slot SSD M.2 2230 / M.2 2280 (NVMe) · up to 2 TB
PCIe NVMe Gen3 x4. Dell lists up to 1 TB for 2230 and 2 TB for 2280. Intel Optane H20 is supported on 11th-gen CPUs only. The separate M.2 2230 slot is for the Wi-Fi card and cannot hold an SSD.
| $/TB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $102.64 | $205.27 | 2 TB | Samsung 990 PRO 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $110.00 | $219.99 | 2 TB | Crucial P3 Plus 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $119.50 | $239.00 | 2 TB | Crucial P3 Plus 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Refurbished | eBay US +1 | View deal |
| $119.50 | $239.00 | 2 TB | Crucial P3 Plus 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | New | eBay US +2 | View deal |
| $124.99 | $124.99 | 1 TB | Kingston NV3 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $133.98 | $133.98 | 1 TB | Crucial P3 1TB M.2 2280 NVMe (Gen3) M.2 2280 SSD · NVMe Gen3 | Used | eBay US +1 | View deal |
| $148.00 | $148.00 | 1 TB | Samsung 970 EVO Plus 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen3 | Used | eBay US +2 | View deal |
| $150.00 | $150.00 | 1 TB | Samsung 990 PRO 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +1 | View deal |
| $152.77 | $305.54 | 2 TB | WD_BLACK SN850X 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $159.99 | $159.99 | 1 TB | Kingston NV3 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | New | eBay US +2 | View deal |
2.5" SATA drive bay HDD 2.5" (SATA) · up to 2 TB
Dell lists a 2.5" 5400 rpm HDD up to 2 TB. Units with the 54 Whr battery do not support a 2.5" drive and may lack the bracket or cable. No thickness limit is given in the sources.
| $/TB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $40.00 | $79.99 | 2 TB | Seagate BarraCuda 2TB 2.5" 5400 RPM HDD 2.5" HDD · SATA · 5400 rpm · SMR · 7 mm | Used | eBay US +2 | View deal |
| $55.00 | $109.99 | 2 TB | Seagate BarraCuda 2TB 2.5" 5400 RPM HDD 2.5" HDD · SATA · 5400 rpm · SMR · 7 mm | New | eBay US +2 | View deal |
| $114.99 | $229.98 | 2 TB | Toshiba L200 2TB 2.5" 5400 RPM HDD (9.5 mm) 2.5" HDD · SATA · 5400 rpm · SMR · 9.5 mm | New | eBay US +1 | View deal |