Cisco NXK-MEM-16GB= — 16GB DRAM Upgrade DIMM for Nexus 9300 Switches
16GB DRAMNexus 9300 upgradeSpare (=) partGenuine Cisco
The Cisco NXK-MEM-16GB= is a genuine Cisco 16GB DRAM DIMM sold as a spare, used to upgrade the system memory of Cisco Nexus 9300 switches that ship with 16GB base memory, such as the N9K-C93108TC-FX3P, N9K-C93180YC-FX3 and N9K-C9364C-GX.
Cisco's Nexus 9000 memory-upgrade guide lists the 16GB DIMM as spare PID NXK-MEM-16GB and shows a 16GB upgrade for those 16GB-base models. The DIMM is installed alongside the memory already in the switch. Extra DRAM gives NX-OS more headroom for larger routing and ACL tables, telemetry, containers and third-party applications running on the switch.
Before you order: Each Nexus model takes a specific upgrade size: FX2 models (93240YC-FX2, 93360YC-FX2, 93216TC-FX2) use an 8GB DIMM, and several FX3, GX2 and H models use 32GB. This 16GB DIMM is for N9K-C93108TC-FX3P, N9K-C93180YC-FX3 and N9K-C9364C-GX. Send us your switch PID and we will confirm before you order.
What's in the Box
- 1 × Cisco 16GB DRAM DIMM (NXK-MEM-16GB=), spare packaging
- No tools or software — follow Cisco's Nexus 9000 memory-upgrade procedure for installation
What It Means in Practice
- The upgrade requires opening the switch and a maintenance window — plan a reload.
- After installation, Cisco's guide shows checking total memory from the NX-OS shell (for example with cat /proc/meminfo).
- More DRAM matters when you run on-box applications, streaming telemetry, large BGP tables or many ACL/QoS policies.
- As a Cisco spare it keeps the switch configuration fully Cisco for TAC support.
What Will Not Work
- Nexus 9300 FX2 models — they take the 8GB upgrade
- Nexus models whose upgrade is 32GB (e.g. 93108TC-FX3, 9348GC-FX3, GX2 and H series)
- Servers, PCs or other network equipment — it is a Cisco system-specific module
- Nexus 7000 supervisors — use the memory listed in the supervisor documentation
Key Features
16GB DRAM
Adds 16GB to supported 16GB-base Nexus 9300 switches.
Listed by Cisco
Named as spare PID NXK-MEM-16GB in Cisco's Nexus 9000 memory-upgrade guide.
On-box headroom
More memory for NX-OS features, telemetry and hosted applications.
Genuine Cisco spare
The = suffix marks a Cisco spare part supplied on its own.
Technical Specifications
| Identification |
| Part Number |
NXK-MEM-16GB= |
| EAN / GTIN |
0889728215312 |
| Brand |
Cisco |
| Memory |
| Capacity |
16GB |
| Type |
DRAM DIMM, Cisco system-specific |
| DDR generation / speed |
Not published by Cisco |
| Compatibility |
| Upgrade for |
N9K-C93108TC-FX3P, N9K-C93180YC-FX3 and N9K-C9364C-GX (16GB base memory) |
| Not for |
Nexus 9300 FX2 (8GB upgrade); models with 32GB upgrade |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
Part-specific term not published by Cisco; follows the host switch's Cisco warranty — claims handled through Singular |
Frequently Asked Questions
Do I need this upgrade?
Cisco lists memory upgrades for these models; it is most relevant when you use features that consume DRAM, such as on-box apps, telemetry or large tables. Ask us and we can review your use case.
Can I use a generic DIMM?
Not recommended. Nexus switches use Cisco system-specific memory, and TAC support expects the Cisco part.
Is the upgrade hot-swappable?
No. The switch must be powered down to install the DIMM, following Cisco's procedure.
Singular Expert Insight · Buyer's Guide
Memory upgrades on Nexus 9300 are model-specific: the same family uses 8GB, 16GB or 32GB DIMMs depending on the exact PID, so always check the switch model first. Browse our
switch range or ask us for the right memory spare for your Nexus model.
✓ Buy it if you run a N9K-C93108TC-FX3P, N9K-C93180YC-FX3 or N9K-C9364C-GX and want Cisco's 16GB memory upgrade.
✕ Skip it if your Nexus is an FX2 model or one whose listed upgrade is 32GB.
→ Also consider the 8GB or 32GB Cisco Nexus memory spare if your model takes a different upgrade size.
Not sure it fits your switch? Send us the exact Nexus PID (show inventory) and we will confirm before you order.