If you're looking to expand or upgrade the RAM in your Mini PC, the SO-DIMM format is the standard used by virtually all mini computers on the market.
On AliExpress you can find modules from well-known brands at very competitive prices, and we've compiled a list of the best-selling ones as of May 2026 so you don't have to look any further.
Why the SO-DIMM format?
Mini PCs use the SO-DIMM (Small Outline Dual In-line Memory Module) format , a compact 204-pin (DDR3) or 260-pin (DDR4) module designed for laptops and small form factor computers.
Its small size —about 67 mm compared to the 133 mm of a standard DIMM— makes it essential in mini computers such as Beelink, GEEKOM, Minisforum or similar.
Before buying, always check which generation of RAM your Mini PC supports (DDR3, DDR3L, DDR4 or DDR5) by consulting the manufacturer's specifications.
Top Selling SO-DIMM Memory Cards on AliExpress 2026
🥇 1. Samsung DDR3 / DDR3L SO-DIMM — Best Seller
⭐ 4.8/5 | 5,000+ sold | AliExpress Top Seller
Samsung's DDR3/DDR3L SO-DIMM memory is by far the best-selling in its category. Compatible with 1.35V (DDR3L, low power) and 1.5V (standard DDR3) voltages, it's available in 2GB, 4GB, and 8GB capacities at speeds of 1333, 1600, and 1866MHz. Ideal for Mini PCs with 3rd to 7th generation Intel processors or AMD AM1/AM2 processors.
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Capacities: 2 GB, 4 GB, 8 GB
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Speeds: 1333 / 1600 / 1866 MHz
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Voltage: 1.35V / 1.5V
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Price: from
€8.82→ €4.82 (-45%) | New buyers: -€4 additional
🥈 2. Kingston DDR3L / DDR3 SO-DIMM — Proven reliability
⭐ 4.8/5 | 5,000+ sold | AliExpress Top Seller
Kingston is one of the most recognized brands in RAM, and its DDR3 SO-DIMM module doesn't disappoint. It supports dual-channel memory, which can significantly improve performance in compatible Mini PCs. It's compatible with PC3-8500, PC3-10600, and PC3-12800 configurations.
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Capacities: 4 GB, 8 GB
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Speeds: 1066 / 1333 / 1600 / 1866 MHz
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Price: from €13.29 (save €0.63)
🥉 3. Samsung DDR4 SO-DIMM — The best-selling DDR4
⭐ 4.7/5 | 4,000+ sold | AliExpress Top Seller
For modern Mini PCs with 8th to 12th generation Intel or AMD Ryzen processors, Samsung DDR4 is the most popular choice. The 3200 MHz speed is the sweet spot for most current platforms, though it's also available in 2400 and 2666 MHz for older systems.
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Capacities: 4 GB, 8 GB, 16 GB
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Speeds: 2400 / 2666 / 3200 MHz
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Price: from
€28.61→ €23.59 (-17%) | New buyers: -€5.02
4. HyperX DDR3L / DDR3 SO-DIMM — High performance, all-time low price
⭐ 4.9/5 | 2,000+ sold | Lowest price in 90 days
HyperX (now Kingston FURY) is Kingston's gaming sub-brand and offers this DDR3 SO-DIMM with the best rating on the list: an impressive 4.9/5. It operates in dual-channel configuration and is compatible with the PC3-12800 and PC3-14900 standards, the most common in Haswell/Skylake-era Mini PCs.
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Capacities: 4 GB, 8 GB
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Speeds: 1333 / 1600 / 1866 MHz
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Price: from
€12.38→ €8.62 (-30%) | New buyers: -€3.76
5. Crucial DDR4 SO-DIMM — Compatible with Intel and AMD
⭐ 4.6/5 | 1,000+ sold | AliExpress Top Seller
Crucial, Micron's consumer brand, guarantees certified compatibility with both Intel and AMD platforms. Its DDR4 module ranges from 4GB to 32GB, making it suitable for upgrading Mini PCs with memory slot limitations.
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Capacities: 4 GB, 8 GB, 16 GB, 32 GB
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Speeds: 2133 / 2400 / 2666 / 3200 MHz
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Price: from
€29.54→ €23.67 (-19%) | New buyers: -€5.87
6. Samsung DDR3 SO-DIMM (Pack of 1/2 Units) — Best price per unit
⭐ 4.8/5 | 1,000+ sold | Lowest price in 90 days
This option allows you to buy one or two Samsung DDR3/DDR3L modules from the same listing, perfect for setting up dual-channel memory on a budget. With a 70% discount off the original price, it's currently the most competitive offer on the entire DDR3 list.
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Capacities: 4 GB, 8 GB
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Speeds: 1333 / 1600 / 1866 MHz
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Price: from
€19.27→ €5.64 (-70%) | New buyers: -€13.63
7. Crucial DDR3 / DDR3L SO-DIMM — Reference budget option
⭐ 4.8/5 | 800+ sold | Lowest price in 90 days
The Crucial DDR3 module with a 204-pin connector is a solid alternative for Mini PCs that don't require DDR4. It operates at 1.35V (DDR3L) and is compatible with the most widespread PC3-10600 and PC3-12800 standards.
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Capacities: 4 GB, 8 GB
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Speeds: 1333 / 1666 MHz
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Price: from
€13.13→ €10.69 (save €2.44)
8. Crucial DDR2 SO-DIMM — For Mini PCs and very old laptops
⭐ 4.7/5 | 600+ sold | AliExpress Top Seller
If your Mini PC is an Intel Core 2 Duo or earlier generation processor, this Crucial DDR2 module in SODIMM format is practically the only viable option on the market today. It's non-ECC and unbuffered, making it compatible with most laptops and mini PCs from that era.
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Capacities: 2 GB, 4 GB (2×2 GB pack)
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Speeds: 667 / 800 MHz (PC2-5300 / PC2-6400)
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Price: from €6.33 (save €0.82)
9. Kingston DDR4 SO-DIMM (Pack 1/2 Units) — For high-capacity configurations
⭐ 4.8/5 | 433 sold
Kingston's DDR4 module pack option allows for high RAM capacities in dual-slot Mini PCs. It supports speeds from 2133 to 3200 MHz and is certified for modern Intel and AMD systems.
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Capacities: 4 GB, 8 GB, 16 GB
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Speeds: 2133 / 2400 / 2666 / 3200 MHz
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Price: from
€58.18→ €54.18 (-6%)
Comparative summary table
| # | Memory | Guy | Ability | Speed | Price from | Assessment | Sold |
|---|---|---|---|---|---|---|---|
| 1 | Samsung | DDR3/DDR3L | 2-8 GB | 1333-1866 MHz | €4.82 | ⭐4.8 | 5,000+ |
| 2 | Kingston | DDR3/DDR3L | 4-8 GB | 1066-1866 MHz | €13.29 | ⭐4.8 | 5,000+ |
| 3 | Samsung | DDR4 | 4-16 GB | 2400-3200 MHz | €23.59 | ⭐4.7 | 4,000+ |
| 4 | HyperX | DDR3/DDR3L | 4-8 GB | 1333-1866 MHz | €8.62 | ⭐4.9 | 2,000+ |
| 5 | Crucial | DDR4 | 4-32 GB | 2133-3200 MHz | €23.67 | ⭐4.6 | 1,000+ |
| 6 | Samsung | DDR3 Pack | 4-8 GB | 1333-1866 MHz | €5.64 | ⭐4.8 | 1,000+ |
| 7 | Crucial | DDR3/DDR3L | 4-8 GB | 1333-1666 MHz | €10.69 | ⭐4.8 | 800+ |
| 8 | Crucial | DDR2 | 2-4 GB | 667-800 MHz | €6.33 | ⭐4.7 | 600+ |
| 9 | Kingston | DDR4 Pack | 4-16 GB | 2133-3200 MHz | €54.18 | ⭐4.8 | 433 |
How much RAM do you need in your Mini PC?
The optimal amount of RAM depends on how you intend to use your Mini PC:
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8 GB: enough for office use, web browsing and basic multimedia
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16 GB: Recommended for multitasking, streaming, and working with multiple applications open.
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32 GB: Ideal for virtualization, video editing, or use as a home server
Installing the modules in dual channel (two identical modules in both slots) can improve memory bandwidth by up to 30-40%, which is especially relevant in Mini PCs with integrated graphics such as AMD Ryzen.
Final buying advice
Always check the RAM type supported by your Mini PC before buying. The best-selling Mini PCs on the market in 2026—such as the GEEKOM IT13, Beelink SER, or Minisforum—use DDR4 SO-DIMM. Older or cheaper models may require DDR3L (1.35V), so check the manual before ordering.
