Cisco UCS C240 M8 Upgrade Guide
Maximize the performance and lifespan of your UCS C240 M8 (M8). Every upgrade option below is verified compatible.
Verified Specifications
| Processor Options | 2 sockets (1 or 2) Intel Xeon 6 Scalable Processors, up to 86 cores per CPU (e.g. 6787P 86C/350W); 8 memory channels per CPU; UPI up to 4 links at 24GT/s |
| Memory Configuration | 32 DIMM slots (16 per CPU), DDR5-6400 RDIMMs with capacity points up to 256GB; up to 8TB (32x256GB) in 2-socket config |
| Drive Configurations | 2U SFF: up to 24 front SAS/SATA HDD/SSD or U.3 NVMe SSDs (with tri-mode controller), optionally up to 8 direct-attach NVMe (slots 1-4 and 21-24); optionally up to 4 rear SAS/SATA/NVMe drives via storage risers (1B/3B, rear NVMe direct to CPU1/CPU2) = up to 28 total; boot-optimized RAID with 2x M.2 SATA; 8GB FlexMMC |
| Power Supply Options | Up to 2 hot-swap PSUs, 1+1 redundant: 1050W DC, 1200W AC, 1600W AC, 2300W AC |
| RAID Controllers | Internal: 24G Tri-Mode M1 RAID controller w/4GB FBWC (32 drives) or 24G Tri-Mode M1 HBA (16 drives, pass-through); SAS/SATA/NVMe (U.3) |
| Networking Options | Integrated 1GbE mgmt port; mLOM/OCP 3.0 slot, 10GbE-200GbE options: VIC 15000 series (15428/15427 4x10/25/50G mLOM, 15238/15237 2x40/100/200G mLOM), PCIe VIC 15425/15235; OCP 3.0 NICs incl. Intel X710 2x10Gbase-T (UCSC-O-ID10GC), 25G/100G OCP (UCSC-O-N6CD25GFO/N6CD100GFO); FI 6400/6500/6600 compatible |
| Specification Source | Cisco official documentation (verified 2026-07-02) |
Upgrade Storage
Moving from spinning disk to SSD or NVMe storage provides the largest single performance improvement — often 10-50x faster I/O. Consider NVMe for boot drives and high-IOPS workloads.
Cisco 1.2-TB 12G 10K 2.5 SAS HDD
Cisco 1.6TB 2.5" SFF Enterprise Performance 12Gb/s SAS SSD (3X DWPD)
Cisco 1.6TB 2.5" U.2 NVMe Intel P5600 High Perf Medium Endurance SSD
Cisco 1.6TB 2.5" U.2 NVMe Intel P5620 High Perf High Endurance (3X) SSD
Cisco 1.6TB NVMe High Perf SSD 2.5"
Cisco 1.6TB NVMe SFF 2.5" Intel 3 DWPD High Endurance
Upgrade Networking
Stepping up from 1GbE to 10GbE or 25GbE eliminates network bottlenecks for VM migration, iSCSI storage traffic, and backup windows. Most modern workloads benefit from at least 10GbE.
Cisco GPU Power Cable for NVIDIA H100 (C240 M7)
Cisco NVIDIA A100 40GB GPU Card
Cisco NVIDIA A100 40GB PCIe GPU
Cisco NVIDIA A100 80GB GPU Card
Cisco NVIDIA A100 Passive GPU 300W 80GB for Cisco UCS X-series
Cisco NVIDIA A100 PCIe Gpu, 80GB Hbm2e, 300W
Upgrade Power & Cooling
This category provides verified compatible upgrade paths. ICD engineers validate every part for compatibility with your specific server model and workload requirements.
Cisco 2811 Fan Kit CISCO2811 Fan Kit
Cisco 36076 04 Cooling Fan for UCS C240 M3
Cisco Air Duct for Intel 5TH Gen Xeon Processors (C220 M7)
Cisco C5020 Fan Fan Module for Nexus 5020 Series
Cisco Catalyst 3850 Type 1 Replacement Fan Module
Cisco Catalyst 9300 Fan Tray
Upgrade Controllers
Upgrading your RAID controller enables faster disk I/O, larger cache, and support for newer drive technologies. Essential when adding NVMe or SAS-4 drives.
Cisco 12G Modular SAS 6-PORT HBA Controller Card (UCSC-SAS-M5HD)
Cisco 12G Modular SAS HBA Max 26 Drives for UCS C-series M5
Cisco 24G SAS HBA (Tri-Mode pass-through) for UCS C-Series M7
Cisco M6 12G SAS HBA 32 Drives for UCS C-series M6
Upgrade Processors
CPU upgrades deliver more cores and higher clock speeds. If your workload is CPU-bound (compilation, analytics, HPC), upgrading from 8-core to 16+ core processors provides significant throughput improvement.
Cisco AMD EPYC 9454 48-Core 2.75GHz 290W (256MB L3) 4th Gen EPYC Genoa
Cisco AMD EPYC 9534 64-Core 2.45GHz 280W (256MB L3) 4th Gen EPYC Genoa
Cisco AMD EPYC 9654 96-Core 2.4GHz 360W (384MB L3) 4th Gen EPYC Genoa
Cisco Intel Xeon 6710E 64-Core 2.4GHz 205W (96MB cache) Intel Xeon 6
Cisco Intel Xeon 6740P 48-Core 2.1GHz 270W (288MB cache) Intel Xeon 6
Cisco Intel Xeon 6747P 48-Core 2.7GHz 330W (288MB cache) Intel Xeon 6
Upgrade Memory
Memory is the most impactful upgrade for virtualization and database workloads. Upgrading from 64GB to 128GB or 256GB can dramatically improve VM density and application response times.
Cisco 128GB DDR4 LRDIMM 3200MHz 4DRx4 3DS Memory
Cisco 128GB DDR4 LRDIMM 3200MHz 4Rx4 Memory
Cisco 128GB DDR5 RDIMM 4800MHz 4Rx4 3DS ECC Memory
Cisco 128GB DDR5 RDIMM 4800MHz 4Rx4 Memory
Cisco 128GB DDR5 RDIMM 4800MHz 4Rx4 Memory (UCS X-Series)
Cisco 128GB DDR5 RDIMM 5600MHz 4Rx4 3DS ECC Memory
More UCS C240 M8 Resources
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