PILLAR HUBUPDATED OCTOBER 2026

Desktops, Mini PCs & Workstations

Prebuilt towers, SFF (Small Form Factor) mini PCs, and high-performance computing.

Key Spec Points:

• Power Supply Headroom & GPU Connectors• Motherboard Expansion & Clearance• M.2 NVMe Gen4/Gen5 Cooling• Port Selection & Front I/O

3 Verified ModelsExact SKUs & Documentation Verified

Apple • Mac miniVERIFIED SPEC

Apple Mac mini M4 (16GB, 256GB)

MPN: MU9D3LL/AUPC: 195949080296

ProcessorApple M4 (10-core CPU with 4 performance and 6 efficiency cores, 16-core Neural Engine)

GraphicsApple M4 (10-core GPU with hardware-accelerated ray tracing and mesh shading)

Memory16GB Unified Memory (120GB/s memory bandwidth, on-package)

Storage256GB NVMe SSD (Removable modular flash storage board)

Display SupportUp to 3 displays: two up to 6K@60Hz over Thunderbolt plus one up to 5K@60Hz (Thunderbolt) or 4K@60Hz (HDMI)

Power Supply150W internal power supply with standard 2-prong IEC C7 power cord (no external power brick)

Dimensions5.0 x 5.0 x 2.0 in (12.7 x 12.7 x 5.0 cm)

Weight1.48 lb (0.67 kg)

Upgrade Reality:

RAM: Unified memory integrated into the Apple M4 silicon package. Non-upgradeable after manufacturing.Storage: Modular flash board on a proprietary socket. Not officially user-upgradeable without micro-soldering.

Lenovo • ThinkStationVERIFIED SPEC

Lenovo ThinkStation P3 Tiny (Core i7, T400)

MPN: 30H00013USUPC: 196804546407

ProcessorIntel Core i7-13700T (16 cores: 8 P-cores + 8 E-cores, 24 threads, up to 4.9 GHz, 35W TDP, Intel vPro)

GraphicsNVIDIA T400 (4GB GDDR6, 384 CUDA cores, 30W TGP) + Intel UHD Graphics 770

Memory16GB DDR5-4800 SO-DIMM (2 slots, upgradable up to 64GB DDR5)

Storage512GB M.2 2280 PCIe 4.0 x4 NVMe SSD (2 slots, upgradable up to 4TB total)

Power Supply170W slim-tip external AC power adapter (89% efficiency)

Dimensions7.0 x 7.2 x 1.5 in (179 x 182.9 x 37 mm), 1.0-Liter chassis volume

Weight3.08 lb (1.4 kg)

Upgrade Reality:

RAM: 2x DDR5 SO-DIMM slots. One slot populated with 16GB module, second slot open. Supports up to 64GB (2x 32GB) DDR5-4800/5600 SO-DIMM.Storage: 2x M.2 2280 PCIe 4.0 x4 NVMe SSD slots with dedicated aluminum heatsinks. One slot populated with 512GB SSD, second slot accessible.

Lenovo • Legion TowerVERIFIED SPEC

Lenovo Legion Tower 5i (i7, RTX 4070 Super)

MPN: 90UT001CUSUPC: 197531981622

ProcessorIntel Core i7-14700F (20 cores: 8 P-cores + 12 E-cores, 28 threads, up to 5.4 GHz Turbo, 65W base / 219W max turbo)

GraphicsNVIDIA GeForce RTX 4070 SUPER (12GB GDDR6X, 220W TGP, 1x HDMI 2.1a, 3x DisplayPort 1.4a)

Memory32GB DDR5-5600 (2x 16GB UDIMM, 4 slots total, expandable up to 64GB)

Storage1TB M.2 2280 PCIe 4.0 x4 NVMe SSD (2x M.2 slots + 2x 3.5" HDD drive bays)

Power Supply850W ATX Power Supply (90% efficiency, 80 Plus Gold, standard ATX form factor)

Cooling SystemLegion 150W Air Cooler with 1x rear 120mm ARGB fan and 2x front 120mm ARGB intake fans

Dimensions8.07 x 15.63 x 16.77 in (205 x 396.9 x 425.9 mm), 26-Liter Micro-ATX chassis

Weight30.86 lb (14.0 kg)

Upgrade Reality:

RAM: 4x DDR5 UDIMM slots. Two slots populated with 16GB sticks (running in dual-channel), two open DIMM slots. Supports up to 64GB DDR5-5600.Storage: 2x M.2 2280 PCIe 4.0 x4 SSD slots on motherboard (one occupied, one free with mounting screw), plus 2x 3.5-inch SATA drive cages in bottom bay.

EDITORIAL RESEARCH

Guides & Technical Analysis for Desktops, Mini PCs & Workstations

compatibility

Apple Mac mini M4 Display & Dock Compatibility Guide: Multi-Monitor Limits

A complete technical breakdown of Apple Mac mini M4 multi-monitor capabilities, Thunderbolt 4 versus USB-C dock bandwidth distribution, and external NVMe SSD read/write ceilings.

7 min readRead Guide →

upgrades

Lenovo ThinkStation P3 Tiny RAM & SSD Upgrade Guide: Dual NVMe & 64GB DDR5

How to upgrade memory to 64GB DDR5 and install a secondary M.2 2280 PCIe 4.0 NVMe SSD inside the 1-liter Lenovo ThinkStation P3 Tiny workstation chassis.

6 min readRead Guide →

upgrades

Lenovo Legion Tower 5i Upgrade Guide: RAM Speed, Secondary SSD & GPU Fit

A practical component upgrade guide for the Lenovo Legion Tower 5i Gen 8: 4-DIMM DDR5 memory configuration rules, secondary M.2 PCIe 4.0 SSD installation, and GPU clearance with the 850W ATX power supply.

7 min readRead Guide →