Introduction

At SeraphimGate Systems, we specialize in guiding businesses toward technology solutions that strike the right balance between performance, scalability, and total cost of ownership. In 2025, the market for business desktops offers both compact mini PCs and custom-built solutions—each suited to different needs. This post compares three standout systems, all tested in our labs with 32GB of DDR5 RAM and a 1TB Samsung Evo SSD:
CPU: AMD Ryzen 9 6900HX APU
Form Factor: Ultra-compact “NUC-style” mini PC
Key Features: Integrated Radeon graphics, WiFi 6E, Bluetooth 5.3, USB4/HDMI/DP connectivity
CPU: AMD Ryzen 9 7945HX (mobile processor in a desktop-style housing)
Form Factor: Slightly larger SFF chassis with a half-height PCIe 5.0 slot
Key Features: Optional discrete GPU support, robust CPU performance, 400W SFF power supply
CPU: AMD Ryzen 8500G (desktop APU)
Motherboard: Gigabyte A650M
Case: CoolerMaster mATX enclosure
Key Features: Standard ATX components for maximum upgradability, comprehensive BIOS support, larger thermal capacity
Testing
In the sections that follow, we examine build quality, setup process, performance, expandability, and overall value for each of these systems. We’ve also run benchmarks using Geekbench, Steel Nomad Light (3DMark), and Cinebench to see how they measure up in real-world usage.
MINISFORUM DeskMini UM690 Slim
Build & Design
The DeskMini UM690 Slim takes a classic “NUC-style” approach. Its black plastic chassis is minimalistic and saves considerable desk space. While it feels sturdy enough, it doesn’t have the premium heft of high-end desktops.
Form Factor: Small footprint, VESA-compatible.
I/O Ports: Includes USB4, HDMI 2.1, DisplayPort 1.4, and a 2.5G Realtek Ethernet port—sufficient for most office environments.
Setup & Initial Experience
We equipped our test unit with 32GB of DDR5 RAM (Silicon Power SODIMMs) and a 1TB Samsung 990 Evo SSD.
Wireless Connectivity: WiFi 6E and Bluetooth 5.3 offer convenience, though drivers may need manual installation.
Maintenance: Accessing the internals requires removing rubber feet. Minisforum anticipates this issue by including spare foot pads.
Performance & Usability
With its AMD Ryzen 9 6900HX, the UM690 Slim handles routine office tasks with aplomb, from light creative work to multiple browser tabs. Under sustained load—like a two-hour Cinebench run—it stays cool and remains reasonably quiet.
Multiple Display Support: Triple-display output (HDMI, DP, USB4) allows for a productive multi-monitor setup.
Thermals: Dual fans work efficiently but can be audible in very quiet rooms.
Benchmark Results
MINISFORUM DeskMini UM690 Slim Benchmark Results
Test | Score |
Geekbench (Single-Core) | 2183 |
Geekbench (Multi-Core) | 10622 |
Cinebench R23 (Single-Core) | 1587 |
Cinebench R23 (Multi-Core) | 13820 |
3DMark (Steel Nomad Light) | 2446 |
Idle Power Draw (W) | 9 |
Load Power Draw (W) | 92* |
Max Temperature (°C) | 83 |
Pros & Cons
Pros:
Extremely compact and space-saving
Good multi-monitor and I/O support
Quiet operation under typical loads
Cons:
Limited upgradability (no standard PCIe)
Plastic chassis feels less premium
Fan noise noticeable in ultra-quiet offices
Verdict
At roughly $250 (barebones), plus memory, storage, and an OS license, the DeskMini UM690 Slim is a solid pick for basic to moderate office tasks. It excels at multiple-monitor setups, light multitasking, and web-based applications. For heavier workloads or future GPU expansion, however, a more upgradable solution may be preferable.
MINISFORUM 795S7
Build & Design
Dubbed the “tiny monster,” the 795S7 houses a Ryzen 9 7945HX in an ITX-like chassis that supports mobile DDR5 and features a half-height PCIe 5.0 expansion slot.
Case Quality: Solidly built with a 400W SFF power supply, though not as refined as major OEM systems.
Form Factor: Small yet more flexible than typical NUCs due to the half-height PCIe slot.
Setup & Initial Experience
We tested a barebones kit at $450, then added RAM and an SSD. Access to internal components is a bit more involved than a standard ATX system, but still straightforward for those comfortable with small form factor builds.
Cooling: Designed to handle up to 100W on the CPU, providing performance closer to desktop-class CPUs.
Performance & Usability
Thanks to the Ryzen 9 7945HX, the 795S7 delivers formidable CPU performance under multi-core loads. If paired with a half-height GPU (e.g., an upcoming RTX 4060), it could transform into a robust workstation.
Onboard Graphics: Radeon 610M is only adequate for basic tasks; serious GPU workloads require a discrete card.
Benchmark Results
MINISFORUM 795S7 Benchmark Results
Test | Score |
Geekbench (Single-Core) | 2893 |
Geekbench (Multi-Core) | 16075 |
Cinebench R23 (Single-Core) | 1962 |
Cinebench R23 (Multi-Core) | 33420 |
3DMark (Steel Nomad Light) | 627 |
Idle Power Draw (W) | 21 |
Load Power Draw (W) | 140* |
Max Temperature (°C) | 71 |
Pros & Cons
Pros:
Outstanding CPU performance for the price
Half-height PCIe slot for discrete GPU or add-in cards
Small but more flexible than typical mini PCs
Cons:
Limited to half-height GPUs
Fewer quality-of-life features than major OEMs
BIOS support may be less comprehensive
Verdict
For roughly $600 total (barebones plus RAM/SSD, minus Windows licensing), the 795S7 stands out for strong CPU performance in a tiny package. If you need a powerful CPU in a compact form and can live with half-height GPU options, it’s a potent solution.
SeraphimGate Evo Series
Build & Design
Our SeraphimGate Evo Series starts at $810 with Windows 11 Pro included. Using only standard components—Gigabyte motherboards, CoolerMaster cases—these systems emphasize reliability and ease of service.
Form Factor: Designed around mATX boards, allowing for multiple expansion cards, full-size GPUs, and even liquid cooling.
Case Quality: Durable, with straightforward access and tool-free features.
Setup & Initial Experience
Evo systems arrive fully tested, minimizing deployment hassles. The roomy chassis accommodates significant hardware expansions over time.
Support & Upgrades: Gigabyte issues frequent BIOS updates, ensuring extended compatibility and fewer long-term headaches.
Performance & Usability
Because it’s a full-fledged desktop, the Evo offers robust cooling, standard PCIe slots, and a range of CPU/GPU options based on your needs.
Thermals: Larger fans and optional cooling solutions handle demanding applications more gracefully than most mini PCs.
Scalability: Ideal for businesses that anticipate more advanced workloads or plan for multi-year component refreshes.
Benchmark Results
SeraphimGate Evo Series Benchmark Results
Test | Score |
Geekbench (Single-Core) | 2751 |
Geekbench (Multi-Core) | 11220 |
Cinebench R23 (Single-Core) | 1791 |
Cinebench R23 (Multi-Core) | 11419 |
3DMark (Steel Nomad Light) | 1645 |
Idle Power Draw (W) | 30 |
Load Power Draw (W) | 120* |
Max Temperature (°C) | 81 |
Pros & Cons
Pros:
Fully upgradable with standard parts
Comprehensive BIOS support
Higher initial investment offset by long-term serviceability
Cons:
Larger footprint than mini PCs
Higher starting price
Overkill for very basic workloads
Verdict
The Evo Series is the top choice for those needing a reliable, future-proofed system. While its upfront cost is steeper, it potentially reduces total cost of ownership for organizations that keep their PCs in service beyond a few years.
Comparative Analysis
Performance
UM690 Slim: Great for everyday tasks; integrated GPU is well suited for basic multimedia.
795S7: Strong CPU performance, albeit with limited half-height GPU options.
Evo Series: Desktop-grade power, best for sustained heavy workloads and expansions.
Expandability
UM690 Slim: Can upgrade RAM and SSD only.
795S7: Adds a half-height PCIe slot but still not full-size.
Evo Series: Accepts full-size GPUs, multiple drives, and expansion cards.
Price vs. Value
UM690 Slim: Most budget-friendly; excellent for standard office needs.
795S7: A sweet spot for powerful CPU performance in a compact form factor.
Evo Series: Higher cost but optimal for long-term ROI and scalability.
Ideal Use Cases
UM690 Slim: Light to moderate office workloads, multi-monitor tasks, and space-constrained desks.
795S7: CPU-intensive roles where a half-height GPU or networking card might be added later.
Evo Series: Growing businesses that need robust performance, flexible upgrades, and plan on extended PC lifecycles.
Conclusion and Recommendations
Choosing the right desktop involves balancing immediate performance needs against future expandability and reliability. The DeskMini UM690 Slim shines in tight spaces and lighter workloads; the 795S7 offers excellent CPU power in a minimal footprint (with the option for discrete, half-height GPUs); and the SeraphimGate Evo Series maximizes versatility with standard components and superior long-term service.
We at SeraphimGate Systems are here to help you pinpoint the perfect fit. Contact us to explore your options, discuss customization needs, or simply learn more about how these systems could elevate your business operations.
* Load Power Draw measurements were taken under combined CPU burner and FurMark 2 stress tests.
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