
HP Z8 G5 vs Lenovo ThinkStation P620: Which High-End Workstation Reigns Supreme?
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In high-performance computing, both HP and Lenovo are names that will always come up whenever one talks about professional workstations. To be specific, the HP Z8 G5 Workstation (85G52UP#ABA) and the Lenovo ThinkStation P620 (30E0010LUS) are among the best among the top performers targeting power users, engineers, data scientists, designers, and content creators because of their reliability, sheer power, and the ability to scale up. However, which is the appropriate one for the level of work you have?
In this detailed comparison, we will compare the two systems on the following critical aspect,s including performance, expansion potential, memory, data storage, GPU performance, software qualifications, as well as the final verdict on the value.
Overview of the HP Z8 G5 Workstation (85G52UP#ABA)
The HP Z8 G5 is the ultimate HP workstation that is primarily used for serious workloads in capitalizing on enterprise platforms. Aiding it in its efficacy are the Intel Xeon Gold 6426Y, the fact that it supports DDR5 ECC memory, that it can have two GPUs, and that a storage expansion is possible.
- Intel Xeon Gold 6426Y (2.50 GHz, 16 cores)
- Memory: 64 GB DDR5 ECC Memory (up to 1 TB can be ordered)
- Storage RAID(0/1/5/10)/ SATA HDD/SSD
- Form Factor: The tower
- Upgrade: 4 GPUs, 14 USB sockets, so many PCIe sockets
- Use: Scientific simulation, artificial intelligence, artificial neural networks, rendering, virtualization, big data analysis
Overview of the Lenovo ThinkStation P620 (30E0010LUS)
Lenovo ThinkStation P620 redefines the performance of workstations by exploiting the opportunity of Threadripper PRO architecture that is offered by AMD. The P620 has top performance by using the 64-core AMD Ryzen Threadripper PRO 5995WX CPU and supporting multithreaded performance, which can be used by professionals and people with heavy workloads.
- CPU: AMD Ryzen Threadripper Pro 5995WX (2.70 GHz, 64 threads)
- Memory: 64 GB DDR4 ECC memory ( Up to 1 TB )
- Storage: 2 TB Solid State NVMe
- Display: Radeon Pro W6800 graphics card
- Form Factor: Tower Business
- OS Windows 11 Pro (inbuilt)
- Application: 3D visualization, Visual VFX, CAD, simulation, video editing, AI
Performance Comparison: Intel Xeon vs AMD Threadripper PRO
It is in the CPU that one first senses the most significant divergence between these two systems.
HP Z8 G5 Performance
Working exclusively for enterprise-grade stability and performance, the Intel Xeon Gold 6426Y is purpose-built to operate at the highest levels of reliability. Thanks to its 16 cores paired with DDR5 ECC memory, it delivers powerful single-thread performance and respectable multi-threading. It performs exceptionally well in the areas of virtualization, database management, and enterprise workloads.
Lenovo P620 Performance
Equipped with 64 cores and a mind-numbing 128 threads, the AMD Ryzen Threadripper PRO 5995WX has become an unstoppable force for multithreaded workloads. Be it cranking through detailed 3D scenes, combing through sprawling datasets, or populating AI models, the Threadripper PRO handily outmuscles the competition.
Lenovo ThinkStation P620 – reigning champion of cores and unprecedented parallel processing power.
Memory and Expandability
HP Z8 G5
- It accommodates DDR5 ECC memory.
- Support for up to 1 terabyte of memory.
- 16 DIMM slots
Equipped with a strong error-correcting framework, high-bandwidth memory is fully capable of sustaining mission-critical workloads with dependable performance.
Lenovo P620
- The system requires DDR4 ECC memory.
- Likewise, capable of accommodating up to 1 TB of RAM.
- 8 DIMM slots
- Though slower than DDR5, it nevertheless proves highly stable for professional duties.
Winner: HP Z8 G5, thanks to its quicker DDR5 memory and the greater number of DIMM slots it provides.
Graphics Capability and GPU Support
HP Z8 G5
- Up to four high-performance GPUs may be installed.
- Ideal for AI/ML workloads, rendering farms, and simulation tasks.
- Works with both the NVIDIA RTX A6000 and the Quadro series GPUs.
Lenovo P620
- It comes equipped with an Radeon Pro W6800—a GPU crafted for the most demanding creative professionals.
- Supports multiple graphics cards; nevertheless, it furnishes fewer GPU slots than the Z8.
Winner: HP Z8 G5—the King of versatility and accommodates multiple graphics cards.
Storage and RAID Options
HP Z8 G5
- It accommodates the installation of numerous SATA and NVMe drives.
- The provision of RAID 0, 1, 5, and 10 levels protects data while boosting overall performance.
- A greater storage bay capacity for enterprise-level deployments.
Lenovo P620
- Out of the box, it comes with 2 TB of NVMe SSD storage.
- Although it offers fewer drive bays, it can still be expanded.
- Owing to the absence of on-board RAID configurations with multiple possibilities, it fails to distinguish itself the way the HP Z8 G5 does.
Winner: HP Z8 G5—ringing out its unrivaled storage flexibility and its RAID support, which delivers all that is imaginable.
Software Compatibility and ISV Certifications
Both workstations are approved by large software vendors to be compatible and perform with essential professional software.
Common Certified Applications:
- Autodesk AutoCAD and Revit
- Dassault Systemes CATIA and SolidWorks
- After effects and Adobe premiere pro
- Siemens NX
- ANSYS, MATLAB etc.
Lenovo focuses more on ISV certifications in creative/ engineering programs, and this is particularly through its AMD-based architecture.
Tie: both provide a wide ISV support.
Design and Build Quality
HP Z8 G5
- Heavy-duty, industrial construction that is rack and enterprise-friendly
- Improved air flow and thermals on the higher ends of the spectrum configurations
- Increased interior space to grow in size
Lenovo P620
- Compact, precision design tower workstation of high performance
- Quieter operation
- Tool-free internal accessibility
Winner: It depends on preference- HP in case of enterprise growth and Lenovo in respect of thin appearance and sound management.
Power Consumption and Thermal Management
HP Z8 G5
- Multi-GPU configurations need a powerful power supply
- Superior thermal control system
- A larger chassis helps in better dissipation of heat
Lenovo P620
- Greater power saving based on Threadripper PRO architecture
- Less-noisy slimmer fans
- Efficient heat dealing with reduced power consumption
Winner: Lenovo P620 is much more economical with low noise.
Operating System and User Experience
HP Z8 G5
- OS is configuration-oriented: it is normally availed without any OS or enterprise-grade Linux / Windows
- Offers a broad scope of BIOS-level management and remote management utilities
Lenovo P620
- Does have Windows 11 Pro pre-installed
- Creative professional and engineer plug-and-play
Winner: Lenovo P620 with up-to-date OS.
Pricing and Total Cost of Ownership (TCO)
HP Z8 G5
- Expensive to buy (optional GPUs and memory)
- It is designed to be deployed in the enterprise long-term
- Better ROI in large-scale operations
Lenovo P620
- Threadripper PRO high-end prices
- The energy cost is saved in the long term by consuming less energy
- High performance-intense creative work value
Winner: To be determined by use case, go HP as ROI enterprise-wise and Lenovo as performance-to-cost value in the creative sector.
Use Case Recommendations
Choose the HP Z8 G5 if you:
- Manage a large enterprise environment
- Need the ability to render or simulate on multiple GPUs
- Demand for memory expandability and RAID support at the top level
- Value ECC DDR5 memory for its bandwidth and stability
Choose the Lenovo P620 if you:
- Create 3D content, edit 8K video, or train AI models
- Require a Windows workstation that is ready to go immediately
- Prefer high multi-core performance to GPU scalability
- Operate in an environment sensitive to noise
Conclusion: Which Workstation Is Right for You?
Both the HP Z8 G5 (85G52UP#ABA) and Lenovo ThinkStation P620 (30E0010LUS) represent the pinnacle of workstation performance; however, the two appeal to slightly different professional audiences.
While the HP Z8 G5 targets those doing enterprise-level IT work in simulation labs and heavily virtualized environments, the Lenovo P620 is a pure-blood workstation for content creation and engineering, maximizing the CPU core count with out-of-the-box productivity.
Contact our experts today to find the best workstation for your needs