ASUS ExpertCenter PN55 vs MINISFORUM MS-A2
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ASUS ExpertCenter PN55
Ryzen AI 7 450 / 32GB DDR5 / 1TB SSD / Windows 11 Pro / US SKU
MINISFORUM MS-A2
Ryzen 9 9955HX barebone, US adapter
Amazon results may include other models. Verify the processor, memory, storage, and seller before buying.
| Memory | ||
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| Storage |
1Is it fast for normal work?
ASUS ExpertCenter PN55
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Desktop and operating-system support Not available
MINISFORUM MS-A2
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Desktop and operating-system support Windows and Ubuntu tested
Robtech found Windows 11 Pro free of detected malware on its configured sample and reported that Ubuntu recognized every network interface. A barebones retail unit includes neither operating system nor storage.
Operating-system installation and device-detection check · Configured Ryzen 9 9955HX review sample; barebones retail configuration differs
Robtech · 2:59
2Can it handle sustained work?
ASUS ExpertCenter PN55
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CPU performance mode Not available
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Video encoding behavior Not available
MINISFORUM MS-A2
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CPU performance mode Fast CPU, cooling-limited
Robtech found that the 9955HX's strongest benchmark gains appeared after enabling Performance mode in BIOS, but also observed thermal throttling under load and said the multi-core uplift over its 7945HX comparison was modest.
Cinebench and Geekbench CPU benchmark suite · Normal and Performance BIOS modes; configured Ryzen 9 9955HX review sample
Robtech · 3:25 -
Video encoding behavior No AV1 hardware encoding
Robtech reported that Performance mode did not shorten its brief H.264 encode and only shaved seconds from the longer AV1 test. The reviewer also noted that the Radeon 610M lacks AV1 hardware encoding.
H.264 and AV1 encoding benchmarks · Configured Ryzen 9 9955HX review sample
Robtech · 4:07
3Can it game?
ASUS ExpertCenter PN55
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Integrated-graphics capability Not available
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Add-in GPU limits Not available
MINISFORUM MS-A2
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Integrated-graphics capability Basic Radeon 610M
ServeTheHome emphasized that the Radeon 610M is intended for display output and media acceleration rather than high-end gaming. Robtech likewise found its 3D and GPU-AI results far below systems with discrete mobile GPUs.
3DMark and Geekbench AI GPU tests · Ryzen 9 9955HX configured review systems; no add-in GPU
Robtech · 4:25 -
Add-in GPU limits Single-slot, bus-powered GPU
The internal slot provides PCIe 4.0 x8 bandwidth in a physical x16 connector. Robtech says a GPU must be single-slot, shorter than 170 mm, and require no auxiliary power; active blower cooling is preferable in the confined bay.
Chassis and expansion compatibility inspection · MS-A2 chassis
Robtech · 2:05
4Is it loud or hot?
ASUS ExpertCenter PN55
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Maximum observed CPU temperature Not available
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Idle sound level Not available
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Load sound level Not available
MINISFORUM MS-A2
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Maximum observed CPU temperature 90 C
Robtech observed about 90 C under load and reported thermal throttling, describing the 9955HX as difficult to cool in this chassis.
Full-load benchmark suite · Configured Ryzen 9 9955HX review sample
Robtech · 6:18 -
Idle sound level 39 dBA
ServeTheHome measured roughly 38 to 39 dBA at idle in its 34 dBA studio after the system had warmed up.
Warm system idle · Approximately 34 dBA room floor; configured Ryzen 9 9955HX review sample
ServeTheHome · 16:24 -
Load sound level 50 dBA
ServeTheHome measured sound levels reaching roughly 50 dBA under load and said the system was clearly audible.
Sustained system load · Approximately 34 dBA room floor; configured Ryzen 9 9955HX review sample
ServeTheHome · 16:24
5How much electricity does it use?
ASUS ExpertCenter PN55
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Low-end idle wall power Not available
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Maximum observed wall power Not available
MINISFORUM MS-A2
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Low-end idle wall power 25 W
ServeTheHome observed roughly 24 to 25 W at the low end of its idle configurations, with more populated configurations reaching about 35 to 45 W.
System idle · Ryzen 9 9955HX review system; measured values varied with installed memory, storage, and expansion
ServeTheHome · 15:31 -
Maximum observed wall power 160 W
Robtech measured 148 W from the wall at full load in the standard mode and 160 W after enabling Performance mode.
Full system load · Performance mode; configured Ryzen 9 9955HX review sample
Robtech · 5:54
6Can I upgrade and connect everything?
ASUS ExpertCenter PN55
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Memory is upgradeable Yes
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Storage is upgradeable Yes
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Case lock also restricts bottom-panel access
Level1Techs showed that the Kensington lock prevents access to the bottom panel on the reviewed 64GB unit.
Level1Techs · 2:15 -
Thunderbolt is present Not available
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Memory compatibility Not available
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Network interfaces Not available
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Storage expansion Not available
MINISFORUM MS-A2
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Memory is upgradeable Yes
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Storage is upgradeable Yes
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Case lock also restricts bottom-panel access Not available
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Thunderbolt is present No
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Memory compatibility 96GB official; 128GB tested
MINISFORUM officially supports 96GB across two DDR5-5600 SO-DIMM slots. ServeTheHome also booted and exercised 128GB using two 64GB non-ECC modules, but found that ECC SO-DIMMs operated without ECC protection.
Memory installation and ECC-function check · Ryzen 9 9955HX review unit
ServeTheHome · 7:12 -
Network interfaces 2x 10GbE plus 2x 2.5GbE
The MS-A2 provides two Intel X710 10GbE SFP+ ports, one Intel I226-V 2.5GbE port, and one Realtek RTL8125 2.5GbE port. Its two rear USB-C ports are 10Gbps USB 3.2 Gen 2 with DisplayPort, not USB4.
Manufacturer and controller inspection · MS-A2 chassis
ServeTheHome · 2:56 -
Storage expansion 3x NVMe, including U.2
Three PCIe 4.0 x4 storage positions include two M.2 2280/22110 slots and one position that accepts M.2 2280 or a 7 mm U.2 drive through the included adapter. The two conventional M.2 slots default to PCIe 3.0 x4 and must be changed in BIOS for Gen 4.
Manufacturer specification and hands-on teardown · MS-A2 chassis
ServeTheHome · 11:02
7Is it good value?
ASUS ExpertCenter PN55
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Manufacturer price Not available
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Verified Amazon configuration Not available
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Reviewer value tradeoff Not available
MINISFORUM MS-A2
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Manufacturer price $799
MINISFORUM listed the exact Ryzen 9 9955HX barebones US configuration for $799 when checked, against a $999 compare-at price.
Manufacturer retail-price check · MS-A200US barebone; no memory, storage, or operating system
MINISFORUM -
Verified Amazon configuration B0F8JG2SHN
Amazon ASIN B0F8JG2SHN matched the exact Ryzen 9 9955HX barebones configuration with no RAM, SSD, or operating system when checked.
Retailer identity check · MS-A2-9955 barebone
MINISFORUM -
Reviewer value tradeoff Expensive, with little direct competition
Robtech judged the MS-A2 expensive relative to the MS-01, which offers many similar features with a slower processor, while noting that little else offered the MS-A2's capabilities at this size.
Review-date price and feature assessment · Ryzen 9 9955HX configured sample with Crucial DDR5-5600, 2TB Crucial SSD, and Windows 11 Pro
Robtech · 8:00
8Will it be dependable?
ASUS ExpertCenter PN55
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Reviewer confirmed custom EFI keys worked
Level1Techs demonstrated the firmware key-management options and reported that a Linux installation with custom EFI keys worked. The distribution, kernel and firmware version were not specified.
Level1Techs · 5:09 -
Seller warranty Not available
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Sustained-load cooling Not available
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Storage-lane default Not available
MINISFORUM MS-A2
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Reviewer confirmed custom EFI keys worked Not available
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Seller warranty 2 years
MINISFORUM advertises a two-year seller warranty and a 30-day money-back guarantee on the US product page.
Manufacturer warranty-policy check
MINISFORUM -
Sustained-load cooling Throttling observed
Robtech observed thermal throttling around 90 C and called cooling the system's largest weakness. ServeTheHome independently found load noise near 50 dBA, so the compact form factor has measurable thermal and acoustic tradeoffs.
Sustained benchmark load · Configured Ryzen 9 9955HX review systems
Robtech · 6:18 -
Storage-lane default Gen 3 default
Robtech found the two M.2 2280 slots configured for PCIe 3.0 by default. The BIOS exposes PCIe 4.0, but its warning says higher speed may increase overheating risk.
BIOS and storage configuration inspection · Configured Ryzen 9 9955HX review sample
Robtech · 2:39
References
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ASUS. ExpertCenter PN55 US SKU specifications. Product page. Accessed .
Configuration: Ryzen AI 7 450 / 32GB DDR5 / 1TB SSD / Windows 11 Pro / US SKU
Disclosure: Manufacturer specifications; no MiniPCBench measurements.
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Level1Techs. Is it Worth it? A Quick Overview of the ASUS ExpertCenter PN55. Video review. . Accessed .
Configuration: Ryzen AI 7 450 / 64GB DDR5-5600, 2 x 32GB / 1TB Micron NVMe SSD. Performance mode for benchmarks. Windows edition, Linux distribution, kernel and firmware version unconfirmed.
Disclosure: Acquisition terms unconfirmed. YouTube displays an affiliate product tag; editor links ASUS in the description.
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MINISFORUM. MINISFORUM MS-A2. Product page. . Accessed .
Configuration: MS-A200US: Ryzen 9 9955HX barebone, no RAM, no storage, no OS, US adapter
Disclosure: Manufacturer specifications, current price, availability, warranty, and return terms.
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ServeTheHome. Homelab Perfection Minisforum MS-A2. Video review. . Accessed .
Configuration: Ryzen 9 9955HX sample configured with multiple tested DDR5 capacities and NVMe storage, including 96GB ECC-function testing and 128GB non-ECC testing
Disclosure: The description says the unit was purchased and contains Amazon affiliate links.
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Robtech. Powerful Mini PC Workstation - Minisforum MS-A2 Review. Video review. . Accessed .
Configuration: Ryzen 9 9955HX configured sample with Crucial DDR5-5600, 2TB Crucial SSD, and Windows 11 Pro
Disclosure: The description identifies the unit as a free review sample and contains retailer affiliate links.
Value for money
No value comparison is available. It requires eligible test scores and at least four current price observations in seven days.
Specification differences
Differences supported by the listed manufacturer specifications
Higher listed specifications for ASUS ExpertCenter PN55
Higher listed specifications for MINISFORUM MS-A2
- Provides 3 storage slots versus 2
Verified specifications
Manufacturer-sourced specifications and current testing status
Processor
| Specification | ExpertCenter PN55 | MS-A2 |
|---|---|---|
| CPU | AMD Ryzen AI 7 450 | AMD Ryzen 9 9955HX |
| Cores / threads | 8 / 16 | 16 / 32 |
| Processor default TDP | 45 W | 100 W |
| Integrated graphics | AMD Radeon 860M | AMD Radeon 610M integrated graphics |
Memory and storage
| Specification | ExpertCenter PN55 | MS-A2 |
|---|---|---|
| Memory type | DDR5-5600 SO-DIMM, 2 x 16GB | 2x DDR5-5600 SO-DIMM slots |
| Maximum memory | 96 GB | 96 GB |
| Upgradeable memory | Yes | Yes |
| Storage slots | 2 | 3 |
Connectivity
| Specification | ExpertCenter PN55 | MS-A2 |
|---|---|---|
| Ethernet | 2 x 2.5GbE, Realtek RTL8125BG | 2x 10GbE SFP+ (Intel X710) plus 2x 2.5GbE RJ45 (Intel I226-V and Realtek RTL8125) |
| Wireless | Wi-Fi 7 and Bluetooth 5.4 | Wi-Fi 6E (MediaTek RZ616) + Bluetooth 5.2 |
| USB4 | Yes | No |
| Thunderbolt | Not published | No |
Size and price
| Specification | ExpertCenter PN55 | MS-A2 |
|---|---|---|
| Enclosure volume | Not published | 1.78 liters |
| List price | Not published | $999 |
| Product class | Not assigned | Home labs and compact servers |