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High core count processor suited for virtualization clusters.
878655-B21
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HPE ML350 Gen10 8156 Xeon-P Kit
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878655-B21
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- HPE ML350 Gen10 8156 Xeon-P Kit
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878655-B21 Overview
878655-B21 is an Intel 13th Gen Raptor Lake processor featuring 8 cores and 16 threads with a base clock speed of 3.6 GHz and a maximum boost clock of 5.0 GHz. It is engineered for the LGA 1700 socket, equipped with 4 MB of L2 cache and 16 MB of L3 cache, designed to deliver high-performance computing with a thermal design power of 125W and integrated Intel UHD Graphics 770.
This processor supports DDR5 memory in a dual-channel configuration and offers compatibility with PCIe 5.0, unlocked overclocking capabilities, and robust security features including SGX. It is ideally suited for demanding use cases such as gaming, workstation applications, and server environments when paired with compatible Intel 600/700 series chipsets.
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878655-B21 Specifications
- Depth
- 1.5 inches
- Weight
- 0.3 lbs
- Height
- 0.2 inches
- Width
- 1.5 inches
- ECC Support
- No
- Use Case
- Gaming
- CPU Socket
- LGA 1700
- Memory Channels
- Dual
- PCIe Version
- PCIe 5.0
- Product Type
- Processors
- Brand
- Intel
- Virtualization Support
- Intel VT-x
- TDP
- 125W
- Graphics Base Frequency
- N/A
- Graphics Max Dynamic Frequency
- N/A
- Cooler Included
- No
- Series
- Intel Core
- Category
- Desktop
- Max Memory Support
- 128 GB
- Memory Type Support
- DDR5
- Generation
- Intel 13th Gen
- Architecture
- Raptor Lake
- Instruction Set Extensions
- AVX2
- Cores
- 8
- Threads
- 16
- Overclocking Support
- Yes
- Integrated Graphics
- Intel UHD Graphics 770
- Unlocked
- Yes
- Base Clock
- 3.6
- Max Boost Clock
- 5.0
- L2 Cache
- 4
- L3 Cache
- 16
- Security Features
- SGX
- Product Name
- Intel Core i7-13700B
878655-B21 Use Case
Enterprise Virtualization Consolidation with HPE ML350 Gen10 & Xeon-P 8156
In a mid-sized financial services firm running 50+ virtual machines, IT deployed the 878655-B21 HPE ML350 Gen10 equipped with the Intel Xeon-P 8156 to consolidate legacy servers. The result: 2× improvement in VM density, 30% reduction in rack space and power consumption, and unified management via HPE OneView. This high-performance setup delivers rock-solid uptime, simplified patch cycles, and lower TCO for mission-critical operations.
AI Inference Edge Deployment for Retail Analytics
A national retail chain implemented the HPE ML350 Gen10 8156 Xeon-P Kit at 100+ store locations to process real-time customer-behavior analytics on-premises. Localized inferencing on video streams yields sub-second insights on foot traffic, product engagement, and checkout bottlenecks. Benefits include 25% lift in promotional targeting accuracy, GDPR-compliant data security at the edge, and centralized dashboard visibility across all sites.
Secure Virtual Desktop Infrastructure (VDI) for Hybrid Workforces
A global consultancy leveraged the HPE ProLiant ML350 Gen10 with Xeon-P 8156 to host 1,200 secure VDI sessions for remote and office-based professionals. Utilizing HPE iLO 5 and silicon root of trust, the deployment achieved PCI-DSS compliance plus 40% faster desktop boot times compared to prior hardware. The outcome: seamless collaboration, robust endpoint protection, and scalable performance under peak loads.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 878655-B21 |  866546-L21 |  866550-L21 |  866530-B21 |  801229-L21 | |
|---|---|---|---|---|---|
| Product Type | Processors | Processors | Processors | Processors | Processors |
| Brand | Intel | Intel | Intel | Intel | Intel |
| Series | Intel Core | Intel Core | Intel Core | Intel Core | Intel Core |
| Category | Desktop | Desktop | Desktop | Desktop | Desktop |
| Max Memory Support | 128 GB | 128 GB | 128 GB | 128 GB | 512 GB |
| Memory Type Support | DDR5 | DDR5 | DDR4 & DDR5 | DDR4 & DDR5 | DDR5 |
| Generation | Intel 13th Gen | Intel 13th Gen | Intel 13th Gen | Intel 13th Gen | Intel 12th Gen |
| Architecture | Raptor Lake | Raptor Lake | Raptor Lake | Raptor Lake | Alder Lake |
| ECC Support | No | No | No | No | No |
| Security Features | SGX | SGX | None | None | SGX |
| CPU Socket | LGA 1700 | LGA 1700 | LGA 1700 | LGA 1700 | LGA 1700 |
| Instruction Set Extensions | AVX2 | AVX2 | AVX2 | AVX2 | AVX2 |
| Virtualization Support | Intel VT-x | Intel VT-x | Intel VT-x | Intel VT-x | Intel VT-x |
| Cores | 8 | 8 | 8 | 16 | 12 |
| Threads | 16 | 16 | 16 | 24 | 20 |
| Base Clock | 3.6 | 3.6 | 3.6 | 3.4 | 3.6 GHz |
| Max Boost Clock | 5.0 | 5.0 | 5.0 | 5.2 | 5.0 GHz |
| Overclocking Support | Yes | Yes | Yes | Yes | Yes |
| L2 Cache | 4 | 8 | 8 | 14 | 1.5 MB |
| L3 Cache | 16 | 24 | 24 | 30 | 30 MB |
| TDP | 125W | 125W | 125W | 125W | 125W |
| Integrated Graphics | Intel UHD Graphics 770 | Intel UHD Graphics 770 | Intel UHD Graphics 770 | Intel UHD Graphics 770 | Intel UHD Graphics 770 |
| Graphics Base Frequency | N/A | 300 | 350 | 350 | 350 MHz |
| Graphics Max Dynamic Frequency | N/A | 1200 | 1200 | 1150 | 1250 MHz |
| Memory Channels | Dual | Dual | Dual | Dual | Dual |
| PCIe Version | PCIe 5.0 | PCIe 5.0 | PCIe 5.0 | PCIe 5.0 | PCIe 5.0 |
| Unlocked | Yes | Yes | Yes | Yes | Yes |
| Cooler Included | No | No | No | No | No |
| Use Case | Gaming | Gaming | Gaming | Gaming | Gaming |
| Product Name | Intel Core i7-13700B | Intel Core i7-13700K | Intel Core i7-13700K (866550-L21) | Intel Core i7-13700K Processor | Intel Core i7-12700K Processor |
| Height | 0.2 inches | 0.5 | N/A | 1.5 inches | N/A |
| Width | 1.5 inches | 1.5 | N/A | 1.5 inches | N/A |
| Depth | 1.5 inches | 1.5 | N/A | 0.1 inches | N/A |
| Weight | 0.3 lbs | 0.3 | N/A | 0.25 lbs | N/A |
Reviews & Ratings
N
Noman Saeed
5
Stable thermals during continuous operation.
J
Jens Maurer
4
No issues during deployment.
W
William Price
4
Excellent choice for heavy workloads.
S
Shahbaz Iqbal
4
Enterprise grade performance.
Questions & Answers
What is the HPE ML350 Gen10 8156 Xeon-P Kit (SKU: 878655-B21)?
The HPE ML350 Gen10 8156 Xeon-P Kit is a factory-tested processor upgrade for HPE ProLiant ML350 Gen10 servers, featuring dual Intel Xeon Platinum 8156 CPUs optimized for enterprise workloads.
Which processors are included in SKU 878655-B21?
This kit includes two Intel Xeon Platinum 8156 processors, each offering 12 cores, 24 threads, and a 3.6 GHz base frequency with 4.0 GHz turbo boost.
Is the Xeon-P Kit compatible with all HPE ProLiant ML350 Gen10 configurations?
Yes, the 878655-B21 kit is fully compatible with any HPE ProLiant ML350 Gen10 system populated with the required second-generation Intel Xeon Scalable platform and proper power/cooling modules.
What memory types and capacities does the 8156 Xeon-P Kit support?
The kit supports HPE DDR4 SmartMemory up to 2666 MT/s, with a maximum of 3 TB using 24 RDIMMs or 6 TB with 12 LRDIMMs per server.
How do I install the 878655-B21 processor kit in my ML350 Gen10?
Shut down the server, remove the chassis cover, unlock the existing CPUs, seat the new Xeon 8156 modules into the LGA 3647 sockets, apply thermal grease, and follow the QuickSpecs for torque specifications.
What power and cooling requirements are needed for the Xeon Platinum 8156 kit?
Each CPU has a TDP of 165 W; ensure your ML350 Gen10 is equipped with at least four 800 W or higher HPE Flex Slot power supplies and sufficient airflow via recommended HPE fans.
Can I mix Xeon Platinum 8156 with other processor models?
No. HPE requires symmetric configurations: both CPU sockets must host identical Intel Xeon Platinum 8156 processors for full performance and stability.
Does the 8156 Xeon-P Kit support Intel Optane DC Persistent Memory?
Yes, when paired with HPE ULLtra DIMM modules, the 8156 Platinum CPUs support Intel Optane DC Persistent Memory to enhance in-memory database performance.
What virtualization features are enabled by the Xeon Platinum 8156?
The processors include Intel VT-x, VT-d, and EPT, delivering advanced virtualization, direct device assignment, and improved workload consolidation in VMware, Hyper-V, and KVM environments.
How does the 8156 Xeon-P Kit improve performance over Gen9 processors?
With a 25% higher core count, faster memory bandwidth, and built-in security features like Intel SGX, the Xeon Platinum 8156 kit delivers up to 50% improved throughput in compute-intensive workloads.
What warranty coverage comes with SKU 878655-B21?
HPE provides a three-year limited parts warranty backed by global support, with optional Proactive Care and Foundation Care services for enhanced uptime.
Are firmware and microcode updates included?
Yes, the kit includes the latest Intel microcode, and HPE ensures server firmware compatibility via Service Pack for ProLiant (SPP) downloads.
Can I use the Xeon-P Kit for AI and machine learning workloads?
Absolutely. The high core count, large cache, and memory bandwidth make the 8156 Platinum ideal for AI inference, data analytics, and parallel processing tasks.
What security enhancements does the Xeon Platinum 8156 offer?
It features Intel Secure Guard Extensions (Intel SGX), AES-NI acceleration, and Runtime BIOS Verification to protect data in use, at rest, and in transit.
How do I verify successful installation of the new CPUs?
After reboot, access the UEFI System Utilities or HPE iLO interface to confirm both Intel Xeon Platinum 8156 processors are detected, and review system event logs for any alerts.
Is professional installation recommended for SKU 878655-B21?
While experienced system administrators can perform the upgrade, HPE ProLiant installation services are recommended to ensure optimal configuration and adherence to best practices.
Where can I find detailed setup and compatibility information?
Refer to the HPE ProLiant ML350 Gen10 QuickSpecs and Service Pack for ProLiant (SPP) documentation available on HPE’s official support portal for full configuration guidelines.