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Strong single thread performance for Gen9 workloads.
825950-B21
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HPE XL2x0 Gen9 E5-2643v4 Kit
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825950-B21
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- HPE XL2x0 Gen9 E5-2643v4 Kit
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825950-B21 Overview
825950-B21 is an Intel Core processor from the Intel 12th Gen Alder Lake family built for desktop platforms using the LGA 1700 socket. It features 10 cores and 20 threads with a base clock speed of 3.6 GHz and a maximum boost clock of 4.8 GHz, backed by 10 MB of L2 cache and 20 MB of L3 cache. The chip’s thermal design power is rated at 125W and includes integrated Intel UHD Graphics 770 with a graphics base frequency of 350 MHz and a maximum dynamic frequency of 1100 MHz, ensuring efficient graphics performance without the need for a discrete GPU.
Alongside support for both DDR4 and DDR5 memory through dual-channel configurations up to 128 GB, the processor also offers PCIe 5.0 connectivity for the latest expansion options. With AVX2 instruction set extensions, virtualization support via Intel VT-x, and compatibility with contemporary LGA 1700 chipsets, 825950-B21 is well suited for gaming and workstation applications. Note that overclocking is not supported and a cooler is not included, which aligns with its design for reliable, out-of-the-box desktop performance.
825950-B21 price is is available on request. Get immediate quote.
Request bulk order quote for 825950-B21 for additional pricing. Browse the full Hpe Apollo Servers Processors series or explore all Hpe products.
825950-B21 Specifications
- Product Type
- Processors
- Brand
- Intel
- Series
- Intel Core
- Category
- Desktop
- Max Memory Support
- 128 GB
- Memory Type Support
- DDR4 & DDR5
- Generation
- Intel 12th Gen
- Architecture
- Alder Lake
- ECC Support
- No
- Security Features
- None
- CPU Socket
- LGA 1700
- Instruction Set Extensions
- AVX2
- Virtualization Support
- Intel VT-x
- Cores
- 10
- Threads
- 20
- Base Clock
- 3.6
- Max Boost Clock
- 4.8
- Overclocking Support
- No
- L2 Cache
- 10
- L3 Cache
- 20
- TDP
- 125W
- Integrated Graphics
- Intel UHD Graphics 770
- Graphics Base Frequency
- 350
- Graphics Max Dynamic Frequency
- 1100
- Memory Channels
- Dual
- PCIe Version
- PCIe 5.0
- Unlocked
- No
- Cooler Included
- No
- Use Case
- Gaming
- Product Name
- 825950-B21 Processor
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
825950-B21 Use Case
High-Density Virtualization for Enterprise Data Centers
An international banking group deploys the HPE XL2x0 Gen9 E5-2643v4 Kit (825950-B21) to host 30 VMware vSphere virtual machines per blade. By leveraging its 6-core architecture and 3.4 GHz base frequency, the IT team reduces rack units by 40% and cuts energy costs by 25%. Benefit: Maximized VM density, lower Total Cost of Ownership (TCO), and predictable performance under peak loads.
Real-Time Analytics and In-Memory Database Acceleration
A fintech startup integrates the 825950-B21 HPE XL2x0 Gen9 E5-2643v4 Kit into its in-memory database cluster for real-time risk analysis. With 64 GB RAM per CPU socket and Intel Turbo Boost up to 3.8 GHz, transaction latency drops by 50% and query throughput doubles. Benefit: Instant insights, higher customer satisfaction, and competitive edge in high-frequency trading.
High-Performance Computing for Engineering Simulation
A global automotive OEM uses HPE XL2x0 Gen9 blades populated with E5-2643v4 CPUs (825950-B21) to run CFD and FEA workloads. Parallel compute jobs complete 30% faster compared to previous-generation servers, accelerating design cycles. Benefit: Shorter time-to-market, improved model accuracy, and optimized resource utilization in product development.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 825950-B21 |  872552-L21 |  803303-B21 |  870256-B21 |  870591-B22 | |
|---|---|---|---|---|---|
| Product Type | Processors | Processors | Processors | Processors | Processors |
| Brand | Intel | Intel | Intel | AMD | Intel |
| Series | Intel Core | Intel Core | Intel Core | AMD Ryzen | Intel Core |
| Category | Desktop | Desktop | Desktop | Desktop | Desktop |
| Max Memory Support | 128 GB | 128 GB | 128 GB | 128 GB | 128 GB |
| Memory Type Support | DDR4 & DDR5 | DDR4 & DDR5 | DDR4 | DDR4 | DDR4 |
| Generation | Intel 12th Gen | Intel 12th Gen | Intel 13th Gen | Ryzen 5000 Series | Intel 12th Gen |
| Architecture | Alder Lake | Alder Lake | Raptor Lake | Zen 3 | Alder Lake |
| ECC Support | No | No | No | No | No |
| Security Features | None | SGX | None | None | SGX |
| CPU Socket | LGA 1700 | LGA 1700 | LGA 1700 | AM4 | LGA 1700 |
| Instruction Set Extensions | AVX2 | AVX2 | AVX2 | AVX2 | AVX2 |
| Virtualization Support | Intel VT-x | Intel VT-x | Intel VT-x | AMD-V | Intel VT-x |
| Cores | 10 | 8 | 8 | 8 | 8 |
| Threads | 20 | 16 | 16 | 16 | 16 |
| Base Clock | 3.6 | 3.6 | 3.8 | 3.8 | 3.6 |
| Max Boost Clock | 4.8 | 5.0 | 5.0 | 4.5 | 4.9 |
| Overclocking Support | No | Yes | No | Yes | Yes |
| L2 Cache | 10 | 2 | 8 | 4 | 4 |
| L3 Cache | 20 | 16 | 16 | 32 | 16 |
| TDP | 125W | 125W | 125W | 95W | 125W |
| Integrated Graphics | Intel UHD Graphics 770 | Intel UHD Graphics 770 | Intel UHD Graphics 770 | None | Intel UHD Graphics 770 |
| Graphics Base Frequency | 350 | 350 | 350 | N/A | 350 |
| Graphics Max Dynamic Frequency | 1100 | 1100 | 1150 | N/A | 1200 |
| Memory Channels | Dual | Dual | Dual | Dual | Dual |
| PCIe Version | PCIe 5.0 | PCIe 5.0 | PCIe 5.0 | PCIe 4.0 | PCIe 5.0 |
| Unlocked | No | Yes | No | Yes | Yes |
| Cooler Included | No | No | No | No | No |
| Use Case | Gaming | Gaming | Gaming | Gaming | Gaming |
| Product Name | 825950-B21 Processor | Intel Core i7-12700K | 803303-B21 | AMD Ryzen 7 5800X | 870591-B22 |
| Height | N/A | N/A | N/A | N/A | 1.4 |
| Width | N/A | N/A | N/A | N/A | 0.8 |
| Depth | N/A | N/A | N/A | N/A | 1.0 |
| Weight | N/A | N/A | N/A | N/A | 0.3 |
Reviews & Ratings
M
Megan Foster
4
Reliable processor kit with good responsiveness.
I
Ian McCarthy
5
Installed without issues and performs consistently.
L
Leo Martinez
5
Suitable for performance sensitive applications.
B
Brian Schultz
4
Predictable and stable operation.
Questions & Answers
What is the HPE 825950-B21 XL2x0 Gen9 E5-2643v4 Kit?
The HPE 825950-B21 XL2x0 Gen9 E5-2643v4 Kit is a factory-qualified upgrade module containing two Intel Xeon E5-2643 v4 processors optimized for HPE ProLiant Gen9 rack and blade servers.
Which processor model does the 825950-B21 kit include?
This kit includes dual Intel Xeon E5-2643 v4 processors, each offering 6 cores, 12 threads, 3.4 GHz base clock and up to 3.6 GHz Turbo Boost with 20 MB Smart Cache.
What HPE servers are compatible with the XL2x0 Gen9 E5-2643v4 Kit?
The kit is compatible with HPE ProLiant DL Gen9, ML Gen9 and BL Gen9 blade servers that support Intel Xeon E5-2600 v4 family CPUs.
How do the E5-2643 v4 CPUs enhance server performance?
The E5-2643 v4 processors deliver high per-core frequency, rapid memory access via DDR4-2400 support, PCIe 3.0 I/O throughput and hardware-accelerated workload handling for compute-intensive applications.
How many memory channels and what speeds are supported?
Each processor supports quad-channel DDR4 memory at up to 2400 MT/s, enabling up to 768 GB of registered DIMM capacity per CPU for data-intensive tasks.
What is the thermal design power (TDP) of the E5-2643 v4?
The Intel Xeon E5-2643 v4 has a TDP of 135 W, requiring compatible HPE Gen9 heatsinks and adequate chassis cooling.
Is Hyper-Threading supported on the E5-2643 v4 processors?
Yes, Intel Hyper-Threading Technology is enabled, offering 12 threads per processor for improved parallel workload performance.
Does the upgrade kit include CPU heatsinks and mounting hardware?
Yes, the 825950-B21 kit ships with factory-installed integrated heat spreaders and all required HPE Gen9 mounting hardware for hassle-free installation.
Do I need a BIOS update to deploy the E5-2643 v4 kit?
HPE ProLiant Gen9 servers require the latest UEFI/BIOS version supporting Intel Xeon E5-2600 v4 family; check HPE Support Center for specific firmware requirements.
How is the kit installed in an HPE Gen9 server?
Power down the server, remove existing CPUs, install the 825950-B21 kit into the designated LGA2011-v3 sockets following HPE installation guide, then reapply thermal interface material and power up.
What warranty covers the HPE 825950-B21 kit?
The kit is covered by HPE’s standard limited warranty, including parts replacement and 3-year support; warranty may be extended with Care Pack services.
Can I mix E5-2643 v4 with other E5-2600 v4 models?
Mixing different E5-2600 v4 models in the same server is not recommended; HPE requires identical CPU models and microcode levels for optimal operation.
How does this upgrade impact virtualization workloads?
With 12 threads per processor, high Turbo frequencies and increased memory bandwidth, the kit delivers enhanced VM density and reduced latency for virtualization platforms.
Is the XL2x0 Gen9 E5-2643v4 Kit hot-pluggable?
No, CPU upgrades require a full server shutdown and removal of system covers; always follow HPE’s safe system servicing procedures.
Where can I purchase or get support for SKU 825950-B21?
The kit is available through HPE authorized resellers or HPE’s e-commerce portal; support and firmware updates are accessible on the HPE Support Center website.
What are the primary use cases for the E5-2643 v4 upgrade?
Ideal for compute-driven workloads such as CAD/CAE, financial analytics, HPC and virtualization environments requiring high clock speeds and consistent single-thread performance.