HP OMEN 40L Gaming Desktop GT21 upgrades
Released 2022 · on sale
Multi-variant gaming desktop: DDR4 vs DDR5 and Intel LGA1700 vs AMD AM5 depend on sub-model (GT21-0000/0067 = DDR4; GT21-1000/1100 = DDR5). CPU and RAM are socketed; verify exact product number before buying upgrades.
Upgrade guide → What fits, step by step, and official documents.
- 4x DIMM (DDR4 or DDR5, board-dependent): 4 × DDR4 / DDR5 DIMM · up to 128 GB total · 5200 MT/s
- 2x M.2 2280 NVMe + SATA 3.5: 2 × SSD / HDD M.2 2280 / 3.5" (NVMe / SATA)
Slot map
4x DIMM (DDR4 or DDR5, board-dependent) 4 × DDR4 / DDR5 DIMM · up to 128 GB total · 5200 MT/s
GT21 covers DDR4 boards (GT21-0000/0067) and DDR5 boards (GT21-1000/1100) — modules are physically incompatible, so buy for your board. DDR5 boards take up to 4x32GB (128GB) at up to DDR5-5200; DDR4 boards top out at DDR4-3733 and one HP manual quotes only 64GB. Speed drops with 65W CPUs. Non-ECC unbuffered UDIMM only; install in matched pairs (order DIMM 4-2-3-1).
| $/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 Amazon Price alert |
| $4.81 | $77.00 | 2 × 8 GB | Corsair Vengeance LPX 16GB Kit (2 × 8GB) DDR4-3200 CL16 DDR4-3200 CL16 DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $5.31 | $169.95 | 2 × 16 GB | Corsair Vengeance LPX 32GB Kit (2 × 16GB) DDR4-3200 CL16 DDR4-3200 CL16 DIMM | Used | eBay US +2 | View deal Amazon Price alert |
| $5.62 | $180.00 | 2 × 16 GB | Corsair Vengeance LPX 32GB Kit (2 × 16GB) DDR4-3200 CL16 DDR4-3200 CL16 DIMM | New | eBay US +2 | View deal Amazon Price alert |
| $5.86 | $375.00 | 2 × 32 GB | Crucial 64GB Kit (2 × 32GB) DDR4‑3200 SO‑DIMM (260‑pin) DDR4-3200 CL22 DIMM | Used | eBay US +1 | View deal Amazon Price alert |
| $6.72 | $430.00 | 2 × 32 GB | Crucial 64GB Kit (2 × 32GB) DDR4‑3200 SO‑DIMM (260‑pin) DDR4-3200 CL22 DIMM | New | eBay US +2 | View deal Amazon Price alert |
| $6.87 | $109.99 | 2 × 8 GB | Corsair Vengeance LPX 16GB Kit (2 × 8GB) DDR4-3200 CL16 DDR4-3200 CL16 DIMM | New | eBay US +1 | View deal Amazon Price alert |
| $7.03 | $450.00 | 2 × 32 GB | G.Skill Ripjaws V 64GB Kit (2 × 32GB) DDR4-3600 CL18 DDR4-3600 CL18 DIMM | Used | eBay US | View deal Amazon Price alert |
| $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 +1 | View deal Amazon Price alert |
| $8.75 | $560.00 | 2 × 32 GB | Crucial Pro 64GB Kit (2 × 32GB) DDR4‑3200 UDIMM DDR4-3200 CL22 DIMM | New | eBay US +2 | View deal Amazon Price alert |
All compatible memory with filters → · Compare prices: DDR4 desktop RAM (DIMM), DDR5 desktop RAM (DIMM)
2x M.2 2280 NVMe + SATA 3.5 2 × SSD / HDD M.2 2280 / 3.5" (NVMe / SATA)
Two M.2 socket 3 (key M) 2280 NVMe PCIe Gen4 x4 slots; no M.2 SATA support. SATA 3.5
| $/TB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $14.00 | $14.00 | 1 TB | WD Blue Desktop 1 TB 3.5" SATA HDD 3.5" HDD · SATA · 7200 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $16.25 | $195.00 | 12 TB | Seagate Exos X12 12TB Enterprise HDD (SATA) 3.5" HDD · SATA · 7200 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $18.00 | $18.00 | 1 TB | BarraCuda 1 TB 3.5" HDD · SATA · 7200 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $22.19 | $354.99 | 16 TB | Seagate Exos X16 16TB (ST16000NM001G) 3.5" HDD · SATA · 7200 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $23.75 | $380.00 | 16 TB | Toshiba MG08 16TB Enterprise (MG08ACA16TE) 3.5" HDD · SATA · 7200 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $24.94 | $399.00 | 16 TB | WD Ultrastar DC HC550 16TB SATA (WUH721816ALE6L4) 3.5" HDD · SATA · 7200 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $25.00 | $500.00 | 20 TB | Exos X20 20TB SED (SATA) 3.5" HDD · SATA · 7200 rpm | Used | eBay US +1 | View deal Amazon Price alert |
| $25.41 | $406.56 | 16 TB | Seagate Exos X16 16TB (ST16000NM001G) 3.5" HDD · SATA · 7200 rpm | New | eBay US +2 | View deal Amazon Price alert |
| $25.53 | $408.50 | 16 TB | Seagate Exos X18 16TB 3.5" SATA HDD 3.5" HDD · SATA · 7200 rpm | Used | eBay US +2 | View deal Amazon Price alert |
| $25.71 | $360.00 | 14 TB | Seagate Exos X14 14TB SATA 6Gb/s 3.5" 512e 3.5" HDD · SATA · 7200 rpm | Used | eBay US +1 | View deal Amazon Price alert |
All compatible storage with filters → · Compare prices: NVMe M.2 2280 SSD, 3.5" hard drive