46W0821: Lenovo 8GB TruDDR4 Memory (2Rx8, 1.2V) PC4-19200 CL17 2400MHz LP RDIMM
Also listed as: ATC8
8GB TruDDR4 Memory (2Rx8, 1.2V) PC4-19200 CL17 2400MHz LP RDIMM. Listed by Lenovo as a memory module for the SYSTEM X3550 M5. The pairing comes from the vendor product guide, which also gives the quantity limits and any controller, firmware or slot requirements. Check those rules and the part number suffix before buying a used unit.
Specifications
| Part number | 46W0821 |
|---|---|
| Brand | Lenovo |
| Type | Memory |
| Other numbers | ATC8 |
| Capacity (GB) | 8 |
| Speed | DDR4 |
| Vendor description | 8GB TruDDR4 Memory (2Rx8, 1.2V) PC4-19200 CL17 2400MHz LP RDIMM |
Fits these models
Check compatibility with Lenovo
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Lenovo has tested with the Lenovo 46W0821.
- Compatibility Lenovo ServerProven (options and OS compatibility)
- Specifications Lenovo Press product guides
- Support Lenovo Data Center Support
Buying or selling 46W0821?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Lenovo System x3550 M5 (Machine Type 8869) Product Guide (withdrawn product), checked 2026-10-28
- Lenovo System x3650 M5 (Machine Type 8871) Product Guide (withdrawn product), checked 2026-10-28