Minisforum EliteMini HM90 Compatibility Guide
The EliteMini HM90 is a compact, budget-conscious mini PC with a Ryzen 9 4900H, DDR4 SO-DIMM upgrades, and flexible storage (M.2 + SATA). This guide covers RAM, storage, power, and upgradeability for a previous-generation desktop replacement.
Quick Specs Summary
| Component | Specification |
|---|---|
| Processor | AMD Ryzen 9 4900H (8-core, 16-thread, 5.5GHz turbo, Zen 3) |
| System RAM | DDR4-3200 SO-DIMM x2 (up to 64GB, upgradeable) |
| Storage | M.2 2280 NVMe (PCIe 3.0) + 2.5″ SATA SSD (up to 2TB) |
| Connectivity | WiFi 6, Bluetooth 5.1, Dual GbE (2x 1GbE) |
| Display | 2x HDMI 2.0 (4K@30Hz each), USB-C video out |
| Power | USB-C 65W (USB PD 2.0) + 19V barrel connector option |
| Form Factor | 140 × 128 × 60mm (ultra-compact), 560g |
RAM Upgrade & Compatibility
The EliteMini HM90 has two DDR4-3200 SO-DIMM slots with a maximum of 64GB. This is DDR4 (older standard but cost-effective for upgrades).
| Capacity | Speed | Price per Module | Total (2 sticks) | Link |
|---|---|---|---|---|
| 16GB DDR4-3200 SO-DIMM | 3200 MHz | £30–45 | 32GB total | View on Amazon UK |
| 32GB DDR4-3200 SO-DIMM | 3200 MHz | £60–85 | 64GB total | View on Amazon UK |
Recommended Setups:
- General Use / Office: 1x16GB (16GB) — sufficient for light workloads, budget-friendly.
- Development / Multitasking: 2x16GB (32GB) — optimal for most users.
- Video Editing / Virtualisation: 2x32GB (64GB) — maximum capacity.
Compatible Brands: Crucial Ballistix, Kingston FURY, Corsair, SK Hynix—all DDR4-3200 SO-DIMs.
Storage: M.2 NVMe + 2.5″ SATA
The HM90 offers flexible storage with one M.2 2280 NVMe and one 2.5″ SATA bay. This is ideal for separating OS and bulk data storage.
M.2 NVMe Options
| Product | Capacity | Speed | Price | Link |
|---|---|---|---|---|
| Samsung 970 EVO Plus | 250GB–1TB | 5,150 MB/s | £35–75 | View on Amazon UK |
| WD Blue SN550 | 250GB–1TB | 4,200 MB/s | £30–70 | View on Amazon UK |
| Kingston A2000 | 250GB–1TB | 3,500 MB/s | £25–60 | View on Amazon UK |
2.5″ SATA Storage Options
| Product | Capacity | Speed | Price | Link |
|---|---|---|---|---|
| Samsung 870 QVO | 1TB / 2TB | 560 MB/s | £70–140 | View on Amazon UK |
| Kingston KC600 | 1TB / 2TB | 550 MB/s | £65–130 | View on Amazon UK |
| WD Blue 3D NAND | 500GB–2TB | 560 MB/s | £45–130 | View on Amazon UK |
Optimal Config: 256GB NVMe (Windows 10/11 + core apps) + 1TB SATA (documents, media, archives).
Power Supply Options
The EliteMini HM90 offers two power options:
- USB-C 65W (Primary): USB PD 2.0 compliant. Most modern laptop chargers work (65W+).
- 19V Barrel Connector (Optional): For wired desktop setups, a legacy 19V connector is available.
Power Draw: 10–15W idle, 35–50W office use, 65W+ gaming.
- USB-C PD Limitation: 65W is adequate for office/browsing, but sustained gaming may see thermal throttling under heavy load.
- Docking: USB-C dock with 65W PD works, though performance is limited under gaming load.
Display Outputs & Connectivity
The HM90 features dual HDMI 2.0 outputs and USB-C video:
- HDMI 1 & HDMI 2: Both 4K@30Hz (dual 4K displays possible, but 30Hz is limiting for video work).
- USB-C Video: Additional output via DP Alt Mode (requires USB-C dock).
Networking:
- Dual Gigabit Ethernet: Two independent 1GbE ports (can be bonded for 2Gbps).
- WiFi 6: ~1.2Gbps peak (real-world: 200–500 Mbps).
- Bluetooth 5.1: Wireless peripherals.
Docking Recommendations:
- Simple USB-C Hub: UGREEN 10-in-1 or Anker (HDMI, USB 3.0, SD, minimal PD).
- Multi-Ethernet: UGREEN DP dock with dual Ethernet and USB 3.0 (for network-heavy workloads).
Performance & Use Cases
The Ryzen 9 4900H (Zen 3) is solid for most desktop replacement tasks:
- Office / Web Browsing: Excellent, 10–15W power draw.
- Development / Coding: Great multi-threaded performance.
- 4K Video Editing: Capable but demanding; 32GB RAM recommended.
- Gaming: iGPU limited; esports 60+ fps, AAA titles 20–30 fps at low/medium.
Thermal & Acoustics
The ultra-compact HM90 chassis (60mm depth) prioritizes portability over cooling:
- Idle: 25–30°C, fanless operation possible.
- Office Use: 40–50°C, quiet operation.
- Sustained Gaming: 70–75°C, audible fan noise (thermal throttling may occur under 65W limit).
Note: The ultra-compact design limits airflow. Avoid placing the HM90 against walls or in hot environments.
Upgradeability Score
7/10 — Good DDR4 and dual storage options, dual Gigabit Ethernet (rare), compact form factor. Limitations: 65W USB-C PD (lower than newer mini PCs), previous-generation Ryzen 4000H series, and HDMI 2.0 (4K@30Hz only) instead of HDMI 2.1.
FAQ
Can the EliteMini HM90 run dual 4K monitors?
Yes, via dual HDMI 2.0, but both output at 4K@30Hz. For 4K@60Hz, upgrade to a newer mini PC with HDMI 2.1 or USB-C DP 1.4.
What’s the maximum RAM?
64GB with 2x32GB DDR4-3200 SO-DIMM. Both slots are user-upgradeable.
Is the USB-C 65W sufficient for gaming?
65W is adequate for light gaming and office work. Sustained AAA gaming may cause thermal throttling. The 19V barrel connector option offers better sustained power delivery.
Can I use both M.2 and SATA storage?
Yes. Install OS on the M.2 NVMe and use 2.5″ SATA for bulk storage (documents, media, backups).
Why is the HM90 so compact?
The 60mm depth makes it extremely portable—perfect for travel or tight desk spaces. Trade-off: thermal performance is lower than larger mini PCs, and sustained 65W power limits gaming.
Recommended Products
These are the products we recommend based on this guide. All links go to Amazon UK where you can check current prices and availability.
| Product | Why We Recommend It | Amazon UK |
|---|---|---|
| Corsair Vengeance DDR4 SO-DIMM 32GB (2×16GB) 3200MHz | Best overall DDR4 upgrade kit | View on Amazon UK |
| Kingston Fury Impact DDR4 SO-DIMM 32GB (2×16GB) 3200MHz | Reliable alternative with tight latency | View on Amazon UK |
| Crucial DDR4 SO-DIMM 16GB 3200MHz | Budget single-stick upgrade | View on Amazon UK |
| Samsung DDR4 SO-DIMM 32GB 3200MHz | OEM-quality for business laptops | View on Amazon UK |
| Samsung 990 Pro 2TB NVMe M.2 2280 | Fastest consumer NVMe — ideal for gaming & editing | View on Amazon UK |
| WD Black SN850X 2TB NVMe | Excellent Gen4 speed with heatsink option | View on Amazon UK |
| Crucial P5 Plus 1TB NVMe | Great value Gen4 SSD | View on Amazon UK |
| Kingston NV2 1TB NVMe | Budget-friendly with solid reliability | View on Amazon UK |
Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.
