9 Best Mini PCs Under $400 (November 2026)

The best mini PCs under 400 dollars include the KAMRUI AK1PLUS Mini PC Computer for everyday office tasks, the Beelink SER3 Mini PC for a larger included SSD, and the GMKtec G3S Mini PC Intel N95 Processor for basic dual-screen computing.

On this page (6 sections)

1. The best mini PC under 400 dollars for each setup
2. How we picked these mini PCs under 400 dollars
3. Compare the mini PCs under 400 dollars
4. Individual mini PC picks under 400 dollars
5. What should you compare before choosing a mini PC under 400 dollars?
6. Which mini PC under 400 dollars should you choose?

The best mini PC under 400 dollars for most everyday users is the KAMRUI AK1PLUS, with 16GB RAM, a 256GB SSD and dual 4K display support. The Ryzen-based ACEMAGIC K1 and KAMRUI Pinova P1 are worth comparing if you want a different processor class and multiple display connections.

A fixed budget can still cover very different setups. Some options focus on basic office work, while others offer more storage, memory expansion or multiple video outputs.

Use this roundup to match the hardware to your daily tasks. For a wider checklist, see our step-by-step mini PC buying guide.

Our picks at a glance

1. 1
   Best for everyday office tasks

   KAMRUI AK1PLUS Mini PC Computer

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a larger included SSD

   Beelink SER3 Mini PC

   9.7/10 our score

   See it on Amazon
3. 3
   Best for basic dual-screen computing

   GMKtec G3S Mini PC Intel N95 Processor

   9.6/10 our score

   See it on Amazon

4. 4

   ACEMAGIC K1 Mini PC AMD Ryzen 7330U

   Best for triple-display connections
   Check it
5. 5

   KAMRUI Pinova P1 Mini PC

   Best for Ryzen at a compact size
   Check it
6. 6

   BOSGAME E5 Plus Mini PC Ryzen 5400U

   Best for future memory upgrades
   Check it
7. 7

   GMKtec M5 Ultra Mini PC AMD Ryzen

   Best for intensive multitasking
   Check it
8. 8

   BOSGAME E5 11 Pro Mini PC

   Best for wired network projects
   Check it
9. 9

   Beelink SER5 Mini PC

   Best for a six-core processor
   Check it

The best mini PC under 400 dollars for each setup

The best choice depends on whether you value memory, storage, processor capacity or display connections most. We compared the listed configurations and features for common home and office needs.

Our score weighs specs, features and buyer feedback against what you're shopping for. Confirm current prices and configuration before buying, since product prices and options can change.

How we picked these mini PCs under 400 dollars

We prioritized configurations that can handle common desktop tasks and looked at memory, included storage, processor details, video outputs and upgrade paths. A dual-screen setup, for example, may matter more than a larger SSD if you work across spreadsheets and browser windows.

We also noted trade-offs such as 8GB starting memory, non-expandable memory and older wireless standards. Choose based on the parts you can use rather than a feature count alone.

Compare the mini PCs under 400 dollars

The table highlights the differences most likely to shape your setup. Check the product sections for details on ports, expansion and fit.

Individual mini PC picks under 400 dollars

The KAMRUI AK1PLUS leads for everyday office work, while the remaining picks fit different storage, display and processor priorities. Start with the configuration that matches how you use a desktop.

1

KAMRUI AK1PLUS Mini PC Computer: Best for everyday office tasks

9.7/10Our score

• Intel Celeron N5095
• 16GB LPDDR4X RAM
• 256GB M.2 SSD
• Dual HDMI 2.0 with dual 4K at 60Hz

The 16GB of memory and dual HDMI outputs suit everyday office work across two screens. Storage can expand with an M.2 drive and a 2.5-inch SATA drive.

See it on Amazon

Pros

• 16GB RAM
• Dual 4K display support
• Two storage expansion options

Cons

• Celeron processor is aimed at routine computing
• Memory expansion is not specified

The KAMRUI AK1PLUS is a straightforward pick for a shared home or office desk. Its 16GB of LPDDR4X memory and Intel Celeron N5095 are aimed at browsing, online classes, video calls, email and multitasking.

Two HDMI 2.0 ports support two 4K displays at 60Hz. That makes it easier to keep a document visible while working in a browser or video call.

The included 256GB M.2 SSD can be expanded with an M.2 SATA or NVMe drive up to 2TB, plus a 2.5-inch SATA SSD or HDD up to 2TB. That flexibility is useful if your photos or work files grow over time.

Choose it for a compact desk with two screens and routine workloads. It has fewer processor resources than the Ryzen 7 pick below, so it's not the best fit if your main goal is heavier multitasking.

2

Beelink SER3 Mini PC: Best for a larger included SSD

9.7/10Our score

• AMD Ryzen 3 3200U
• 16GB DDR4 RAM
• 500GB M.2 PCIe 3.0 x4 SSD
• Dual HDMI outputs

A 500GB SSD and 16GB RAM make this a practical choice if you want more included storage. Its two HDMI ports can connect two screens.

See it on Amazon

Pros

• 500GB SSD
• 16GB RAM
• Memory can be upgraded to 32GB

Cons

• Older 2-core processor
• No specific display refresh rate is given

The Beelink SER3 is a good fit if you want more included drive space without moving away from an everyday-use mini PC. It combines a 500GB M.2 PCIe 3.0 x4 SSD with 16GB DDR4 RAM.

Its Ryzen 3 3200U is a 2-core, 4-thread processor with a maximum speed of 3.5GHz. Two HDMI ports support a pair of screens, and the RAM can be upgraded to 32GB if you later need more memory.

The SSD capacity stands out among the 256GB configurations here. That can make it convenient for a local library of documents, photos or programs, though capacity alone doesn't make a computer faster for every task.

Pick this model if you value a larger drive and upgradable memory. Compare the processor cores as well if you run demanding software or keep several heavy programs open.

3

GMKtec G3S Mini PC Intel N95 Processor: Best for basic dual-screen computing

9.6/10Our score

• Intel N95, 4 cores
• 8GB DDR4 RAM
• 256GB M.2 SSD
• Dual HDMI 2.0 with dual 4K at 60Hz

This configuration pairs an Intel N95 processor with 8GB RAM and dual HDMI outputs. It fits routine work and home entertainment when you don't need a large memory capacity.

See it on Amazon

Pros

• 4-core Intel N95
• Dual 4K display support
• Gigabit Ethernet

Cons

• 8GB RAM is less than several picks here
• Only one included drive is specified

The GMKtec G3S suits basic home and office computing with two 4K display outputs. It uses an Intel N95 processor with 8GB RAM and a 256GB M.2 SSD.

The two HDMI 2.0 ports support 4K at 60Hz, and Gigabit Ethernet provides a wired network option. Wi-Fi 5 and Bluetooth 5.0 cover wireless connections for a monitor setup, keyboard or mouse.

Its 8GB memory is the main trade-off against the 16GB picks. That's a reasonable starting point for lighter tasks, but check whether the model fits your expected workload before choosing it for frequent multitasking.

Choose the G3S if dual-screen use matters and you don't need a larger memory configuration. The AK1PLUS includes twice the RAM, while the G3S has a newer Intel N95 processor.

4

ACEMAGIC K1 Mini PC AMD Ryzen 7330U: Best for triple-display connections

9.5/10Our score

• AMD Ryzen 7330U, 4 cores and 8 threads
• 16GB LPDDR4 memory
• 256GB M.2 SSD
• HDMI, DisplayPort and USB-C video

The Ryzen 7330U and three video outputs make this a fit for multitasking across several displays. Its built-in power supply also avoids a separate external power adapter.

See it on Amazon

Pros

• Three display outputs
• 16GB memory
• Built-in power supply

Cons

• Memory is non-expandable
• Wireless spec is Wi-Fi 5 and Bluetooth 4.2

The ACEMAGIC K1 fits a desk where you want a Ryzen 7330U processor and three display connections. It has 16GB of non-expandable LPDDR4 memory and a 256GB M.2 SSD.

HDMI, DisplayPort and USB-C video outputs give you options for connecting up to three displays. The built-in power supply also means it doesn't use a separate external power adapter.

The memory cannot be expanded, so choose the configuration with your likely workload in mind. It supports adding an M.2 NVMe PCIe 3.0 or SATA SSD for storage up to 2TB.

Pick it for multi-screen work and a compact cable setup. If you expect to increase RAM later, compare the BOSGAME or GMKtec models with specified memory expansion.

5

KAMRUI Pinova P1 Mini PC: Best for Ryzen at a compact size

9.4/10Our score

• AMD Ryzen 3 Pro 7330U, 4 cores and 8 threads
• 8GB RAM
• 256GB M.2 SSD
• HDMI, DisplayPort and USB-C

This compact Ryzen option offers three display connections and a VESA bracket. Its 8GB of RAM is a trade-off if you tend to keep many apps open.

See it on Amazon

Pros

• Ryzen 7330U processor
• Three display connections
• VESA mounting bracket

Cons

• 8GB RAM
• Memory expansion is not specified

The KAMRUI Pinova P1 offers a Ryzen 3 Pro 7330U processor in a compact chassis with a VESA bracket. Its HDMI, DisplayPort and USB-C outputs support a flexible monitor setup.

This configuration has 8GB RAM and a 256GB M.2 SSD. It also includes Windows 11 Pro and supports Linux, according to the product details.

The VESA mount can attach the mini PC behind a compatible monitor, which frees desk space. Its memory is not described as upgradeable, so consider that 8GB limit if you use many apps at once.

Choose the Pinova P1 for a small footprint, Ryzen processor and multiple video connections. If memory capacity is a priority, compare it with the 16GB options above.

6

BOSGAME E5 Plus Mini PC Ryzen 5400U: Best for future memory upgrades

9.2/10Our score

• AMD Ryzen 3 5400U, 4 cores and 8 threads
• 8GB DDR4 RAM, upgradeable to 64GB
• 256GB SATA SSD
• Triple 4K display outputs

Two SODIMM slots let you expand the 8GB of memory up to 64GB. A second M.2 slot gives you another path to add storage.

See it on Amazon

Pros

• Memory upgrade support up to 64GB
• Second M.2 storage slot
• Triple 4K display outputs

Cons

• Starts with 8GB RAM
• Wi-Fi 5 rather than a newer wireless standard

The BOSGAME E5 Plus is a good option if you want to start with 8GB RAM and leave room to expand. It has two SODIMM slots supporting up to 64GB and an extra M.2 2280 NVMe slot for storage.

Its Ryzen 3 5400U processor has four cores and eight threads. HDMI, DisplayPort and USB-C provide triple display outputs, and the machine supports up to 4K at 60Hz on each.

The included 256GB SSD is SATA, while the additional slot supports NVMe PCIe 3.0 x4 storage. Wi-Fi 5 and Bluetooth 5.0 cover wireless use, with two 2.5GbE ports for wired network needs.

Pick the E5 Plus if future memory or storage upgrades matter. If you'd rather start with 16GB RAM, the AK1PLUS, SER3 or M5 Ultra arrive with more memory installed.

7

GMKtec M5 Ultra Mini PC AMD Ryzen: Best for intensive multitasking

9.2/10Our score

• AMD Ryzen 7 7730U, 8 cores and 16 threads
• 16GB dual-channel DDR4 RAM
• 512GB PCIe SSD
• Triple display support

The Ryzen 7 7730U, 16GB RAM and 512GB SSD make this the most capable configuration here for heavier multitasking. It also supports memory and storage expansion.

See it on Amazon

Pros

• 8-core, 16-thread processor
• 16GB RAM and 512GB SSD
• Dual 2.5GbE ports

Cons

• Expansion drives are not included
• More hardware than routine office tasks may need

The GMKtec M5 Ultra is the strongest fit here for heavier multitasking. Its Ryzen 7 7730U has 8 cores and 16 threads, paired with 16GB dual-channel RAM and a 512GB PCIe SSD.

The memory can expand to 64GB, and two M.2 slots support storage expansion. For a multi-monitor desk, HDMI, DisplayPort and USB-C allow three displays to connect at once.

Two 2.5GbE LAN ports make it more versatile for wired networking than a basic home desktop. Wi-Fi 6E and Bluetooth 5.2 add newer wireless options than the Wi-Fi 5 models in this list.

Choose this one if you want more processor headroom, expansion options and triple-display support. It may be more hardware than you need for email, web browsing and basic document work.

8

BOSGAME E5 11 Pro Mini PC: Best for wired network projects

9.1/10Our score

• AMD Ryzen 3 5300U, 4 cores and 8 threads
• 8GB DDR4 RAM
• 256GB SSD
• Dual 2.5GbE LAN

Dual 2.5GbE ports set this apart for wired network projects. It also has three video outputs and supports memory upgrades up to 64GB.

See it on Amazon

Pros

• Dual 2.5GbE ports
• Memory upgrade support up to 64GB
• Triple 4K display outputs

Cons

• 8GB RAM in this configuration
• Wi-Fi 5

The BOSGAME E5 11 Pro stands out for wired networking and future upgrades. It has dual 2.5GbE LAN ports, three video outputs and two SODIMM slots that support up to 64GB RAM.

This configuration pairs an AMD Ryzen 3 5300U with 8GB DDR4 memory and a 256GB SSD. An extra M.2 2280 NVMe slot lets you add another drive without replacing the included one.

HDMI, DisplayPort and full-function USB-C support up to three 4K displays at 60Hz. Wi-Fi 5 is available for wireless networking, while the two Ethernet ports suit setups that need multiple wired connections.

Pick it for a compact desktop used in a home lab or network project, or if you want room to expand memory and storage. For everyday tasks without those needs, the simpler 16GB choices may be a better fit.

9

Beelink SER5 Mini PC: Best for a six-core processor

8.0/10Our score

• AMD Ryzen 5 5500U, 6 cores and 12 threads
• 16GB DDR4 RAM
• 480GB M.2 SSD
• Triple display support

This SER5 configuration combines a six-core Ryzen 5 processor with 16GB RAM and a 480GB SSD. It's a fit if you value the processor and three-screen support.

See it on Amazon

Pros

• 6-core, 12-thread processor
• 16GB RAM
• Triple display support

Cons

• Memory and storage upgrade limits need confirmation
• Wi-Fi 6 and Bluetooth 5.4 are specified

The Beelink SER5 has a six-core Ryzen 5 5500U and 16GB DDR4 RAM for buyers who want a higher-core-count processor. Its 480GB M.2 SSD gives you more included storage than the 256GB options.

HDMI, DisplayPort and USB-C support up to three displays. The mini PC also includes Wi-Fi 6, Bluetooth 5.4 and a 2.5GbE Ethernet port.

This model has the lowest score in our roundup because its fit depends more on needing the six-core processor than on extra flexibility. Its 16GB RAM and 480GB SSD still make a well-rounded configuration for a mix of work and media tasks.

Choose it if you value the Ryzen 5 processor and triple-screen support. The GMKtec M5 Ultra is the stronger match if you specifically want a newer Ryzen 7 with more threads and a larger included SSD.

What should you compare before choosing a mini PC under 400 dollars?

Compare the processor, memory, storage and ports against the work you expect to do. A higher core count may help with heavier multitasking, but everyday browsing and email don't always need the most powerful processor.

Is 8GB or 16GB RAM better for a budget mini PC?

16GB gives you more room for several apps, tabs and video calls at once. An 8GB system can fit lighter use, especially if it supports memory upgrades, but expansion limits vary by model.

The KAMRUI AK1PLUS, Beelink SER3, ACEMAGIC K1 and GMKtec M5 Ultra start with 16GB. If you choose an 8GB option, the BOSGAME E5 Plus and E5 11 Pro specify upgrade support, while the Pinova P1's memory is not described as expandable.

Is 256GB enough storage for a mini PC?

256GB can be enough for common apps, documents and streaming, but a larger drive leaves more room for local media and projects. The SER3 includes 500GB, the M5 Ultra has 512GB, and the SER5 comes with 480GB.

Some models also support a second drive or a larger replacement. Use our guide to mini PC storage needs to estimate how much space your files need.

Which mini PCs support multiple displays?

Several picks support two or three displays, but the connection type differs. The AK1PLUS and G3S use dual HDMI, while the Ryzen models with HDMI, DisplayPort and USB-C can support three screens.

Check the video capabilities of each port and your monitor's input before planning your desk. Don't assume that every USB-C port supports video.

Do you need upgradeable memory and storage?

Upgrade support matters if you want to add RAM or disk space later. The E5 Plus and E5 11 Pro specify memory and extra storage expansion, while the AK1PLUS has multiple storage expansion options.

If you prefer a system you can set up without immediate upgrades, compare the included configuration first. The ACEMAGIC K1's memory is non-expandable, so its 16GB should suit your expected use from the start.

Which mini PC under 400 dollars should you choose?

Choose the KAMRUI AK1PLUS for everyday office tasks and two 4K screens. Pick the Beelink SER3 if included storage matters, the ACEMAGIC K1 for three display connections and 16GB RAM, or the GMKtec M5 Ultra for heavier multitasking.

If your needs fit a smaller budget, compare our best mini PC under 300 dollars picks. If you'd like more room to consider higher-powered configurations, see the best mini PC under 500 dollars guide and our best mini PC under 200 dollars options.

Our top 3 picks at a glance

1. 1
   Best for everyday office tasks

   KAMRUI AK1PLUS Mini PC Computer

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a larger included SSD

   Beelink SER3 Mini PC

   9.7/10 our score

   See it on Amazon
3. 3
   Best for basic dual-screen computing

   GMKtec G3S Mini PC Intel N95 Processor

   9.6/10 our score

   See it on Amazon

Frequently asked questions

Can a mini PC under 400 dollars handle office work?

Yes. The picks here include processors and memory aimed at everyday tasks such as browsing, email, video calls and office apps.

For smoother multitasking, compare memory capacity and choose 16GB RAM if your work involves many open tabs or programs.

Also check the display connections you need before choosing.

Is 8GB RAM enough for a budget mini PC?

8GB can suit routine browsing, email and document work, but it gives you less room for many programs at once. Some models here support memory upgrades, while others don't specify an upgrade path.

Check that detail before you buy if you expect your workload to grow.

How much storage should a mini PC have?

A 256GB SSD can work for documents, apps and streaming, while a 480GB or 500GB drive leaves more room for local files. Your storage needs depend on how many photos, videos and large programs you keep on the computer.

Use our mini PC storage guide to estimate a suitable capacity.

Can budget mini PCs run two or three monitors?

Some can. The AK1PLUS and G3S have two HDMI outputs, while several Ryzen options include HDMI, DisplayPort and USB-C video connections.

Confirm that the ports support your monitor setup and resolution, and check whether USB-C carries video before planning a multi-screen desk.

Should I spend less or move up to a higher budget?

Choose a lower budget if your needs are basic and the available processor, memory and storage fit your work. If you need more memory, faster processors or extra ports, compare options in our mini PCs under 500 dollars guide.

Our mini PCs under 300 dollars picks can help if you want to spend less.