Lenovo IdeaPad 3 15ITL05 upgrades
Released 2021 · on sale · supported until Feb. 8, 2027
Lenovo IdeaPad 3 15ITL05 = Machine Type 81X8 (do not confuse with the 15ITL6 / 82H8, which uses DDR4-3200 and up to 16GB). The CPU is BGA-soldered to the Intel SoC board (Celeron 6305 through i7-1165G7, Tiger Lake-UP3, up to 28W) - there is no CPU slot and no CPU upgrade path. Memory is 4GB soldered plus one SO-DIMM; some SKUs ship 4GB soldered with the slot empty. Storage layout depends on battery size: 35Wh = M.2 + 2.5in bay, 45Wh = M.2 only. All 'maximum' capacities are Lenovo-tested, not hard limits. Model marked Withdrawn by Lenovo.
Upgrade guide → What fits, step by step, and official documents.
- 1x DDR4-2666 SO-DIMM (4GB soldered): DDR4 / SSD SO-DIMM · 4 GB soldered · up to 12 GB total · 2666 MT/s
- 1x M.2 2280/2242 PCIe 3.0 x4 NVMe: SSD M.2 2242 / M.2 2280 (NVMe) · up to 1.024 TB
- 1x 2.5in SATA bay (35Wh models only): HDD / SSD 2.5" (SATA) · up to 1.024 TB
Slot map
1x DDR4-2666 SO-DIMM (4GB soldered) DDR4 / SSD SO-DIMM · 4 GB soldered · up to 12 GB total · 2666 MT/s
One free SO-DIMM plus 4GB soldered (max 12GB per Lenovo testing). 16GB modules may work for 20GB total but are untested. Run dual-channel (populate the SO-DIMM) to get full Iris Xe performance on i5/i7. Plain non-ECC unbuffered DDR4-2666; faster RAM runs at 2666.
| $/GB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $2.38 | $19.00 | 8 GB | Micron 8GB DDR4-2666 SO-DIMM (MTA8ATF1G64HZ-2G6E1) DDR4-2666 CL19 SO-DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $3.00 | $24.00 | 8 GB | Kingston KCP426SS8/8 8 GB DDR4-2666 SO-DIMM (KCP OEM line) DDR4-2666 CL19 SO-DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $3.25 | $25.99 | 8 GB | Samsung 8 GB DDR4-2400 SO-DIMM (OEM module) DDR4-2400 CL17 SO-DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $3.62 | $28.99 | 8 GB | Crucial 8GB DDR4-2400 SO-DIMM DDR4-2400 CL17 SO-DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $3.88 | $31.00 | 8 GB | SK hynix 8GB DDR4-2666 SO-DIMM (HMA81GS6CJR8N-VK) DDR4-2666 CL19 SO-DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $3.94 | $31.50 | 8 GB | Samsung 8GB DDR4-3200 SO-DIMM (M471A1K43DB1-CWE) runs at 2666 MT/s DDR4-3200 CL22 SO-DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $3.94 | $31.51 | 8 GB | Crucial 8GB DDR4-2666 SO-DIMM (CT8G4SFS8266) DDR4-2666 CL19 SO-DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $4.38 | $35.00 | 8 GB | Kingston KCP426SS8/8 8 GB DDR4-2666 SO-DIMM (KCP OEM line) DDR4-2666 CL19 SO-DIMM | New | eBay US +2 | View deal Amazon Price alert |
| $5.00 | $39.99 | 8 GB | Micron 8GB DDR4-2666 SO-DIMM (MTA8ATF1G64HZ-2G6E1) DDR4-2666 CL19 SO-DIMM | New | eBay US +2 | View deal Amazon Price alert |
| $5.00 | $40.00 | 8 GB | Samsung 8 GB DDR4-2400 SO-DIMM (OEM module) DDR4-2400 CL17 SO-DIMM | New | eBay US +2 | View deal Amazon Price alert |
All compatible memory with filters → · Compare prices: DDR4 laptop RAM (SO-DIMM)
1x M.2 2280/2242 PCIe 3.0 x4 NVMe SSD M.2 2242 / M.2 2280 (NVMe) · up to 1.024 TB
NVMe/PCIe only - SATA M.2 drives will not work. 2280 is the native mount; 2242 fits with a bracket (2242 tested to 512GB, 2280 to 1TB). PCIe 3.0 x4, so no benefit from Gen4 drives. Larger drives commonly work but are unverified.
| $/TB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $101.52 | $25.99 | 256 GB | Samsung PM981a 256GB M.2 2280 NVMe SSD (Lenovo FRU) M.2 2280 SSD · NVMe | Used | eBay US +2 | View deal Amazon Price alert |
| $103.50 | $52.99 | 512 GB | PM981A 512GB M.2 2280 NVMe SSD (Lenovo FRU 00UP735) M.2 2280 SSD · NVMe | Used | eBay US +2 | View deal Amazon Price alert |
| $107.40 | $54.99 | 512 GB | XG7 512GB M.2 2280 NVMe Gen4 SSD (Lenovo) M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal Amazon Price alert |
| $109.99 | $109.99 | 1 TB | Crucial P3 1TB M.2 2280 NVMe (Gen3) M.2 2280 SSD · NVMe Gen3 | Used | eBay US +2 | View deal Amazon Price alert |
| $119.97 | $119.97 | 1 TB | Samsung 970 EVO Plus 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen3 | Used | eBay US +2 | View deal Amazon Price alert |
| $127.99 | $127.99 | 1 TB | Kingston NV3 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal Amazon Price alert |
| $130.00 | $130.00 | 1 TB | Crucial P3 Plus 1TB M.2 2280 SSD · NVMe | New | eBay US +2 | View deal Amazon Price alert |
| $139.98 | $69.99 | 500 GB | WD_BLACK SN770 500GB M.2 2280 SSD · NVMe Gen4 | Used | eBay US +1 | View deal Amazon Price alert |
| $139.99 | $139.99 | 1 TB | Crucial P3 Plus 1TB M.2 2280 SSD · NVMe | Used | eBay US +2 | View deal Amazon Price alert |
| $145.99 | $145.99 | 1 TB | WD_BLACK SN770 1TB M.2 2280 SSD · NVMe | Used | eBay US +2 | View deal Amazon Price alert |
All compatible storage with filters → · Compare prices: NVMe M.2 2280 SSD
1x 2.5in SATA bay (35Wh models only) HDD / SSD 2.5" (SATA) · up to 1.024 TB
Present ONLY on 35Wh-battery models; the 45Wh battery occupies this space, leaving M.2 only. SATA 6Gb/s, accepts 2.5in HDD or SSD. Lenovo validated 1TB; shipped HDDs are 7mm-class and no official thickness limit is stated, so verify clearance for 9.5mm drives. No mounting cabling details in PSREF - check the HMM.
| $/TB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $16.60 | $8.30 | 500 GB | HGST Travelstar Z7K500 500GB 2.5" 7200 RPM HDD (7 mm) 2.5" HDD · SATA · 7200 rpm · 7 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $19.72 | $9.86 | 500 GB | Seagate Laptop Thin 500GB 2.5" 7200 RPM HDD (7 mm) 2.5" HDD · SATA · 7200 rpm · 7 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $19.99 | $19.99 | 1 TB | Travelstar 5K1000 1 TB 2.5" HDD · SATA · 5400 rpm · 9.5 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $19.99 | $19.99 | 1 TB | MQ01ABD100 1 TB 2.5" SATA HDD (5400 RPM) 2.5" HDD · SATA · 5400 rpm · 9.5 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $20.00 | $10.00 | 500 GB | Toshiba 500GB 2.5" 5400 RPM HDD (7 mm) 2.5" HDD · SATA · 5400 rpm · 7 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $22.95 | $22.95 | 1 TB | Samsung Spinpoint M8 1 TB 2.5" SATA HDD (now Seagate) 2.5" HDD · SATA · 5400 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $24.00 | $24.00 | 1 TB | MQ04ABF100 1 TB 2.5" HDD · SATA · 5400 rpm · 7 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $24.95 | $24.95 | 1 TB | Travelstar 5K1000 HTS541010A9E662 1 TB 2.5" SATA HDD (5400 RPM) 2.5" HDD · SATA · 5400 rpm · 9.5 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $27.25 | $27.25 | 1 TB | Travelstar 7K1000 1 TB (7200 RPM) 2.5" HDD · SATA · 7200 rpm · 9.5 mm | Used | eBay US +2 | View deal Amazon Price alert |
| $27.99 | $27.99 | 1 TB | Travelstar 7K1000 1 TB (7200 RPM) 2.5" HDD · SATA · 7200 rpm · 9.5 mm | New | eBay US +1 | View deal Amazon Price alert |
All compatible storage with filters → · Compare prices: 2.5" SATA SSD, 2.5" laptop hard drive