# Lenovo RD450, Xeon E5-2682v4 16C 2.5GHz, 10G Ethernet
**Wikidata**: [Q73729744](https://www.wikidata.org/wiki/Q73729744)  
**Source**: https://4ort.xyz/entity/lenovo-rd450-xeon-e5-2682v4-16c-2-5ghz-10g-ethernet-q73729744

## Summary
The Lenovo RD450 is a rack-dense server that, when equipped with dual Intel Xeon E5-2682 v4 16-core 2.5 GHz processors and 10 Gb Ethernet, is classified as a supercomputer and has delivered a sustained 827.2 Teraflops (Rmax) on the TOP500 list. Manufactured by Lenovo and running Linux, the system held a consistent TOP500 ranking from June 2016 through June 2018.

## Key Facts
- **Instance of**: supercomputer (formally classified in TOP500)
- **Manufacturer**: Lenovo (Chinese multinational, founded 1984, HQ Beijing)
- **Operating system**: Linux family (initial release 1991-09-17)
- **TOP500 system ID**: 178765
- **Peak performance**: 827.2 Teraflops Rmax (repeatedly measured 2016-06 through 2018-06)
- **CPU**: dual Intel Xeon E5-2682 v4, 16 cores each, 2.5 GHz base clock
- **Network**: 10 Gigabit Ethernet interconnect
- **Form-factor**: 2U rack-dense server (RD450 model line)

## FAQs
### Q: Is the Lenovo RD450 a supercomputer or just a server?
A: In the configuration with dual Xeon E5-2682 v4 CPUs and 10 GbE, the RD450 cluster was large enough to be formally listed as a TOP500 supercomputer, sustaining 827.2 Teraflops.

### Q: Which operating system does it run?
A: It runs a Linux distribution, consistent with the vast majority of TOP500 systems.

### Q: How long did it stay on the TOP500 list?
A: The same 827.2 Teraflops result appeared on every TOP500 list from June 2016 to June 2018, a span of two years.

### Q: Who manufactured the hardware?
A: Lenovo, the Chinese technology company established in 1984 and headquartered in Beijing.

## Why It Matters
The RD450 configuration demonstrates how commodity 2U rack servers can be aggregated into clusters competitive with purpose-built supercomputers. By pairing high-core-count Intel “Broadwell-EP” processors with 10 Gb Ethernet, Lenovo delivered a cost-effective, scalable building block that research centers could deploy incrementally. Its multi-year presence on the TOP500 proved that dense, energy-efficient nodes could satisfy HPC workloads without exotic hardware, helping to democratize supercomputing for universities and medium-sized labs. For Lenovo, the listing validated the company’s strategy—after acquiring IBM’s x86 server business—of engineering servers explicitly for scale-out HPC clouds while still supporting enterprise virtualization and database tasks.

## Notable For
- Sustained 827.2 Teraflops across four consecutive TOP500 lists (2016-2018)
- Achieved supercomputer status using standard 2U rack servers rather than custom blades
- Used dual 16-core Intel Xeon E5-2682 v4 processors, a server CPU rarely seen in top-tier HPC systems
- Demonstrated Lenovo’s rapid entry into the supercomputer market after the IBM x86 acquisition

## Body
### Hardware Configuration
The Lenovo ThinkServer RD450 is a 2U rack server whose chassis accepts two Intel Xeon E5-2600 v4 processors. In the TOP500 entry, each node carried dual Xeon E5-2682 v4 chips running at 2.5 GHz base frequency. Every processor provides 16 physical cores, yielding 32 cores per node and 64 threads with Hyper-Threading enabled.

### Interconnect & Cluster Design
Nodes were linked via 10 Gigabit Ethernet, an unusual choice for tightly coupled HPC but sufficient for the workload tested. Large clusters aggregated thousands of these nodes to reach the measured 827.2 Teraflops Rmax.

### Performance History
Lenovo submitted the system to the TOP500 project under ID 178765. The identical Rmax value—827.2 Teraflops—was reported on the June 2016, November 2016, June 2017, November 2017, and June 2018 lists, indicating a stable, production machine rather than a one-time benchmark stunt.

### Operating Environment
Like 100 % of the November 2017 TOP500, the RD450 cluster ran Linux, leveraging the kernel’s scalability features for high-core-count NUMA systems.