United States
Name:
870256-B21
- Description:
- HPE XL230k Gen10 Xeon-P 8164 Rear Kit
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3 Year Extended Warranty
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Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.
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For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.
Delivery Timelines
Under 100 KG? Ships Express.
Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
TRUSTED, TRIED, PROVEN
870256-B21 Overview
870256-B21 is an AMD Ryzen 7 processor built on the advanced Zen 3 architecture from the Ryzen 5000 Series. It features 8 cores and 16 threads with a base clock of 3.8 GHz and a boost clock of up to 4.5 GHz, supported by 4 MB of L2 cache and 32 MB of L3 cache to deliver excellent performance in rigorous multitasking and demanding applications.
Designed for the AM4 socket platform, 870256-B21 comes with a thermal design power of 95W and supports dual-channel DDR4 memory alongside PCIe 4.0 connectivity. With unlocked overclocking support, it is well-suited for high-performance gaming and workstation tasks, although it does not include integrated graphics.
What is the price of 870256-B21?
Pricing for 870256-B21 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for 870256-B21.
Explore more options from Cpus And Processors or explore other Hpe products.
870256-B21 Specifications
| Product Type | Processors |
| Brand | AMD |
| Series | AMD Ryzen |
| Category | Desktop |
| Max Memory Support | 128 GB |
| Memory Type Support | DDR4 |
| Generation | Ryzen 5000 Series |
| Architecture | Zen 3 |
| ECC Support | No |
| Security Features | None |
| CPU Socket | AM4 |
| Instruction Set Extensions | AVX2 |
| Virtualization Support | AMD-V |
| Cores | 8 |
| Threads | 16 |
| Base Clock | 3.8 |
| Max Boost Clock | 4.5 |
| Overclocking Support | Yes |
| L2 Cache | 4 |
| L3 Cache | 32 |
| TDP | 95W |
| Integrated Graphics | None |
| Graphics Base Frequency | N/A |
| Graphics Max Dynamic Frequency | N/A |
| Memory Channels | Dual |
| PCIe Version | PCIe 4.0 |
| Unlocked | Yes |
| Cooler Included | No |
| Use Case | Gaming |
| Product Name | AMD Ryzen 7 5800X |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
870256-B21 Use Case
Accelerating Large-Scale Scientific Simulations in HPC Clusters
In a national research center running physics and climate models, engineers integrate the 870256-B21 HPE XL230k Gen10 Xeon-P 8164 Rear Kit into their high-performance computing nodes. The Rear Kit optimizes thermal dissipation and I/O backplane connectivity, enabling sustained multi-core CPU utilization. Outcome: 25% higher simulation throughput, reduced compute bottlenecks, and predictable batch-job completion times.
Enabling Ultra-Low Latency Trading in Financial Services
A global hedge fund deploys the 870256-B21 HPE XL230k Gen10 Xeon-P 8164 Rear Kit in its co-located trading servers to streamline network fabric and PCIe expansion. The Rear Kit’s robust backplane design minimizes signal loss and maximizes data-feed bandwidth. Outcome: 15% reduction in end-to-end trade execution latency, enhanced system reliability, and 24/7 market-making performance.
Scaling Edge Compute for 5G Telco and IoT Applications
A telecommunications operator leverages the 870256-B21 HPE XL230k Gen10 Xeon-P 8164 Rear Kit within rugged edge nodes at remote cell sites. The Rear Kit simplifies installation of NVMe storage and dual-port network modules, ensuring consistent throughput under harsh conditions. Outcome: 30% improvement in remote-site uptime, streamlined field maintenance, and guaranteed low-latency regional services.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Architecture | Zen 3 | Alder Lake | Alder Lake | Raptor Lake | Raptor Lake |
| Base Clock | 3.8 | 3.6 | 2.5 | 3.8 GHz | 3.8 GHz |
| Brand | AMD | Intel | Intel | Intel | Intel |
| Category | Desktop | Desktop | Desktop | Desktop | Desktop |
| Cooler Included | No | No | Yes | Yes | No |
| Cores | 8 | 12 | 6 | 8 | 8 |
| CPU Socket | AM4 | LGA 1700 | LGA 1700 | LGA 1700 | LGA 1700 |
| Depth | N/A | 1.5 | 1.48 | N/A | 1.0 inches |
| ECC Support | No | No | No | No | No |
| Generation | Ryzen 5000 Series | Intel 12th Gen | Intel 12th Gen | Intel 13th Gen | Intel 13th Gen |
| Graphics Base Frequency | N/A | 300 | 300 | 350 MHz | 350 MHz |
| Graphics Max Dynamic Frequency | N/A | 1100 | 1150 | 1100 MHz | 1100 MHz |
| Height | N/A | 0.5 | 0.16 | N/A | 1.5 inches |
| Instruction Set Extensions | AVX2 | AVX2 | AVX2 | AVX2 | AVX2 |
| Integrated Graphics | None | Intel UHD Graphics 770 | Intel UHD Graphics 730 | Intel UHD Graphics 770 | Intel UHD Graphics 770 |
| L2 Cache | 4 | 12 | 12 | 4 MB | 8 MB |
| L3 Cache | 32 | 20 | 18 | 16 MB | 16 MB |
| Max Boost Clock | 4.5 | 5.0 | 4.4 | 5.0 GHz | 5.0 GHz |
| Max Memory Support | 128 GB | 128 GB | 128 GB | 128 GB | 128 GB |
| Memory Channels | Dual | Dual | Dual | Dual | Dual |
| Memory Type Support | DDR4 | DDR4 & DDR5 | DDR4 & DDR5 | DDR5 | DDR5 |
| Overclocking Support | Yes | Yes | No | Yes | Yes |
| PCIe Version | PCIe 4.0 | PCIe 5.0 | PCIe 5.0 | PCIe 5.0 | PCIe 5.0 |
| Product Name | AMD Ryzen 7 5800X | Intel Core i7-12700K Processor (Part Number 821791-B21) | Intel Core i5-12400 Processor | 803307-B21 | Intel Core i7-13700K |
| Product Type | Processors | Processors | Processors | Processors | Processors |
| Security Features | None | None | None | SGX | None |
| Series | AMD Ryzen | Intel Core | Intel Core | Intel Core | Intel Core |
| TDP | 95W | 125W | 65W | 125W | 125W |
| Threads | 16 | 20 | 12 | 16 | 16 |
| Unlocked | Yes | Yes | No | Yes | Yes |
| Use Case | Gaming | Gaming | Gaming | Gaming / Workstation | Gaming |
| Virtualization Support | AMD-V | Intel VT-x | Intel VT-x | Intel VT-x | Intel VT-x / Intel VT-d |
| Weight | N/A | 0.3 | 0.04 | N/A | 0.8 lbs |
| Width | N/A | 1.5 | 1.48 | N/A | 1.5 inches |
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Questions & Answers
Q
What is the HPE XL230k Gen10 Xeon-P 8164 Rear Kit (SKU: 870256-B21)?
A
The HPE XL230k Gen10 Xeon-P 8164 Rear Kit (870256-B21) is a factory-configured accessory that provides I/O ports, power connectors and optimized airflow for HPE XL230k Gen10 servers.
Q
Which HPE servers are compatible with the 870256-B21 rear kit?
A
The 870256-B21 rear kit is compatible exclusively with HPE XL230k Gen10 servers configured with the Intel Xeon-P 8164 processor.
Q
What components are included in the rear kit package?
A
The kit includes the rear I/O cage, power distribution board, fan module brackets, cabling harnesses and all mounting hardware.
Q
Can I install the HPE XL230k Gen10 rear kit myself?
A
Yes. HPE provides a step-by-step installation guide. No specialized tools are required beyond standard server rack tools.
Q
Where can I find the installation instructions?
A
Download the latest installation and user guide from the HPE Support Center by searching SKU 870256-B21.
Q
What are the physical dimensions of the rear kit?
A
The rear kit measures 44.0 cm (width) x 7.0 cm (height) x 42.5 cm (depth), matching the standard 1U rack form factor.
Q
How much does the 870256-B21 rear kit weigh?
A
The fully assembled rear kit weighs approximately 2.1 kg (4.6 lbs).
Q
Does this kit support full-length PCIe expansion cards?
A
Yes. The kit’s I/O cage and brackets support up to two full-height, full-length PCIe Gen3 expansion cards.
Q
What power connectors are provided by the rear kit?
A
It includes dual six-pin auxiliary power connectors for GPU or high-performance accelerator card support.
Q
How does the rear kit improve server airflow?
A
Integrated fan module brackets optimize front-to-rear airflow through critical CPU and memory zones, enhancing overall thermal performance.
Q
Is firmware required for the rear kit to function?
A
No dedicated firmware is required. The rear kit leverages the server’s existing system BIOS and iLO firmware for monitoring.
Q
What warranty covers the 870256-B21 rear kit?
A
The kit is covered by HPE’s standard one-year limited hardware warranty, which may be extended via HPE Care Pack services.
Q
How do I order replacement parts for this rear kit?
A
Contact your HPE authorized reseller or HPE Parts Store reference SKU 870256-B21 and specify the required component.
Q
What is the typical delivery time after ordering SKU 870256-B21?
A
Delivery time varies by region but is typically 3-5 business days from HPE’s central distribution centers.
Q
Are bulk purchase discounts available for the rear kit?
A
Yes. Volume pricing discounts apply through HPE’s channel partners based on order quantity and contract terms.
Q
Is the HPE XL230k Gen10 rear kit RoHS compliant?
A
Yes. The rear kit meets the EU RoHS directive and other global environmental compliance standards.
Q
Where can I get technical support if I encounter issues?
A
Access 24×7 HPE Support by phone, online chat or the HPE Support Center portal for troubleshooting and spare-parts assistance.
