This article contains affiliate links. If you purchase through our links, we may earn a commission at no extra cost to you. We only recommend products we’ve thoroughly researched.

MINISFORUM X1-255 vs Beelink SER9: Upgradeable DDR5 vs Soldered LPDDR5X — The RAM Question [2026]

Minisforum AI X1-255

The Short Answer

Same CPU. The MINISFORUM is $100 cheaper, has WiFi 7, and upgradeable DDR5. The Beelink has 677 reviews proving reliability. The entire article comes down to one question: do you value upgradeable RAM, or proven reliability?

Pick MINISFORUM X1-255 if: You want upgradeable RAM, WiFi 7, $327 barebone option, or $100 savings.

Pick Beelink SER9 if: You trust the 677 reviews, don’t need RAM upgrades, want proven reliability.

Side-by-Side Specs

Spec	MINISFORUM X1-255	Beelink SER9	Winner
CPU	Ryzen 7 255 (8C/16T, 4.9GHz)	Ryzen 7 H 255 (8C/16T, 4.9GHz)	Tie
GPU	Radeon 780M (12 CUs)	Radeon 780M (12 CUs)	Tie
NPU	16 TOPS (XDNA 1)	16 TOPS (XDNA 1)	Tie
RAM	32GB DDR5 (UPGRADEABLE)	32GB LPDDR5X (SOLDERED)	X1-255
Storage	1TB SSD	1TB SSD	Tie
Networking	2.5GbE + WiFi 7	2.5GbE + WiFi 6	X1-255 (WiFi)
USB4	2x USB4	1x USB4	X1-255
Barebone Option	Yes ($327)	No	X1-255
Reviews	11 (4.6★)	677 (4.2★)	SER9
Price	~$739	~$839	X1-255

CPU and GPU Performance

Both systems use the same Ryzen 7 255/H 255 processor — AMD’s Hawk Point refresh with XDNA 1 NPU. Eight Zen 4 cores, 16 threads, up to 4.9 GHz boost. The Radeon 780M GPU has 12 RDNA 3 compute units (768 shaders).

AI compute: Both deliver 38 TOPS total (16 from XDNA 1 NPU + 22 from GPU). This is entry-level AI — not full Copilot+ (requires 40+ TOPS), but sufficient for 7B-13B LLMs. For Ollama LLM inference:

7B models: ~25-40 tokens/sec on both
13B models: ~10-20 tokens/sec on both
34B models: Limited by 32GB RAM

GPU performance: The 780M handles 1080p gaming at medium settings and Stable Diffusion XL image generation in 12-18 seconds. No meaningful difference between the two implementations.

Memory: The Critical Difference

This is the entire article in one section:

MINISFORUM X1-255: 32GB DDR5 SO-DIMM — upgradeable to 64GB. Standard DDR5 is slightly slower than LPDDR5X, but the upgrade path matters for future workloads. Add 32GB later (~$80-100) when you need to run 34B LLMs or heavier VM workloads.

Beelink SER9: 32GB LPDDR5X soldered to the motherboard. LPDDR5X is ~10-15% faster than standard DDR5 due to higher bandwidth. But it’s permanent — you cannot upgrade. 32GB is the ceiling forever.

Why this matters:

For 7B-13B LLMs: Both are fine with 32GB
For 34B LLMs: Both are adequate (with headroom on X1-255)
For 70B LLMs: Neither works with 32GB — X1-255 can upgrade to 64GB; SER9 cannot

Value calculation: The X1-255’s upgradeable RAM is worth ~$80-100 in future upgrade flexibility. The $100 price difference essentially pays for this flexibility.

Networking and Connectivity

MINISFORUM X1-255: Single 2.5GbE. WiFi 7 and Bluetooth 5.4. WiFi 7 is current-gen and future-proof. Dual USB4 ports (40Gbps) with Power Delivery and DisplayPort support.

Beelink SER9: Single 2.5GbE. WiFi 6 and Bluetooth 5.2. WiFi 6 is one generation behind WiFi 7. Single USB4 port (40Gbps).

For wireless: WiFi 7 is future-proof and provides faster speeds. The X1-255 has WiFi 7; the SER9 has WiFi 6. For a homelab that lives on Ethernet, this matters less.

Barebone option: The X1-255 is available as a barebone system at $327 — bring your own DDR5 SO-DIMM and M.2 SSD. This is exceptional value for DIY builders. The SER9 has no barebone option.

Power Consumption

Metric	X1-255	SER9
Idle (W)	~8W	~8W
Load (W)	~55W	~78W
Annual Cost (24/7 idle)	~$8.41/year	~$8.41/year

Annual cost calculated at $0.12/kWh. Sources: Community estimates, Guru3D.

Idle power is identical — both share the H255/255 platform. Under load, the X1-255 is more power-efficient (~55W vs ~78W), likely due to the more efficient power delivery of its external adapter design.

Reviews and Brand Trust

This is where the SER9 justifies its premium:

MINISFORUM X1-255: 11 Amazon reviews at 4.6 stars. Early impressions are positive, with users praising the WiFi 7, upgradeable RAM, and compact design. The 4.6★ rating is promising for a new product.

Beelink SER9: 677 Amazon reviews at 4.2 stars. This is social proof you can’t ignore. Beelink has established support channels and a track record of honoring warranties. For risk-averse buyers, this matters enormously.

What 677 reviews means:

Proven long-term reliability
Known issues are documented
Beelink support has track record
Community knowledge base exists

Price and Value

At $739, the X1-255 is $100 cheaper than the SER9 at $839. Here’s what you get for the extra $100 on the SER9:

677 reviews proving reliability (vs 11)
Beelink’s established brand and support
Faster LPDDR5X bandwidth (~10-15%)
Peace of mind for risk-averse buyers

Here’s what you get for saving $100 on the X1-255:

Upgradeable DDR5 SO-DIMM (vs soldered LPDDR5X)
WiFi 7 (vs WiFi 6)
Dual USB4 ports (vs single)
$327 barebone option

Value ranking:

For upgradeability: X1-255 wins
For WiFi: X1-255 wins
For proven reliability: SER9 wins
For budget: X1-255 wins

Real-World Use Cases

For Local LLMs (Ollama)

X1-255 wins. Both handle 7B-13B models identically, but the X1-255’s upgradeable DDR5 means you can add 32GB later for 34B models. The SER9’s soldered 32GB is a permanent ceiling.

For Homelab (Proxmox, Docker)

X1-255 wins. The upgradeable RAM handles more VMs. WiFi 7 is future-proof. The $327 barebone option is exceptional for budget homelab builds.

For Daily Use (Office, Media)

SER9 wins. The 677 reviews prove reliability for daily drivers. The compact chassis fits anywhere. WiFi 6 is adequate for most home networks.

For Budget Buyers

X1-255 wins. At $739, it’s $100 cheaper with upgradeable RAM and WiFi 7. The $327 barebone option is the cheapest modern mini PC entry point.

Final Verdict: Which Should You Buy?

Buy the MINISFORUM X1-255 if:

You want upgradeable DDR5 SO-DIMM for future 34B LLMs
You need WiFi 7 for future-proofing
You’re interested in the $327 barebone option for DIY
You want to save $100
You’re comfortable with 11 reviews (4.6★)

Buy the Beelink SER9 if:

You value proven reliability (677 reviews at 4.2 stars)
You prefer established brands with track records
You don’t need more than 32GB RAM ever
You want faster LPDDR5X bandwidth
You’re risk-averse and want community proof
WiFi 6 is adequate for your setup

Amazon Product Links

MINISFORUM X1-255 — $739 (upgradeable DDR5, WiFi 7)
Beelink SER9 — $839 (677 reviews, soldered LPDDR5X, proven reliability)
MINISFORUM X1-255 Barebone — $327 (DIY, bring your own RAM/SSD)

Frequently Asked Questions

Is the Ryzen 7 255 the same as H 255?

Yes. The 255 and H 255 are the same chip — AMD’s Hawk Point refresh. Both are 8C/16T at up to 4.9 GHz with the same XDNA 1 NPU (16 TOPS). The naming difference is marketing, not technical.

Is the LPDDR5X noticeably faster than DDR5?

In bandwidth-sensitive workloads like LLM inference, LPDDR5X is ~10-15% faster. But the difference is small compared to the upgradeability disadvantage. For 7B-13B models, you won’t notice the difference. For 34B+ models, having 64GB DDR5 matters far more than the bandwidth advantage of soldered LPDDR5X.

Can both systems run local LLMs?

Yes. The 38 TOPS handles 7B models at 25-40 tokens/sec and 13B models at 10-20 tokens/sec. This is entry-level AI but sufficient for chat and inference workloads. For 34B+ models, the X1-255’s upgradeable RAM is a genuine advantage.

Is WiFi 7 worth it?

For a homelab that lives on Ethernet, no. For a desktop replacement or media PC, WiFi 7 is future-proof. If you have a WiFi 7 router (or plan to upgrade), the X1-255 is the better choice.

Is the $100 premium for SER9 worth it?

For risk-averse buyers, yes. The 677 reviews at 4.2★ prove long-term reliability. For upgrade-focused buyers, no — the X1-255’s upgradeable RAM and WiFi 7 are better value.

Can I upgrade the SER9’s RAM later?

No. The LPDDR5X is soldered to the motherboard — 32GB is the permanent ceiling. For upgradeable RAM, the X1-255 is the only option in this comparison.