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Small black mini desktop, compact square chassis

Lenovo

Lenovo ThinkStation Mini Desktop i9-14900 T400 8GB 4TB 300W

SKU CH-6P89-D22VV

Mini desktop with a 14th Gen i9-14900, NVIDIA T400 4GB GDDR6 graphics, 8GB DDR5 memory and a 4TB PCIe NVMe SSD

  • Screen sizeNo Screen
  • RAM capacity8 GB DDR5
  • SSD storage4 TB
  • GraphicsNVIDIA T400
  • Operating systemWindows 11 Home
  • Form factorMini PC
  • 14th Gen Intel Core i9-14900 with 24 cores and 32 threads for heavy multitasking
  • NVIDIA T400 4GB GDDR6 graphics for professional visual workloads
  • 4TB PCIe NVMe SSD gives vast fast storage for large projects
  • 8GB DDR5 memory supports responsive performance in demanding apps
  • Compact 7×7.25×1.5 in mini design fits tight workspaces

Compact workstation with 14th Gen i9-14900

This Lenovo ThinkStation Mini desktop pairs a 14th Gen i9-14900 processor with 24 cores and 32 threads up to 5.8 GHz with an NVIDIA T400 4 GB GDDR6 card. It ships with 8 GB DDR5 memory and a 4 TB PCIe NVMe SSD. Windows 11 Home is pre-installed.

Suited for multi-threaded workloads in a small

The 24-core CPU handles rendering, compilation and data analysis while the T400 drives up to four displays via one full-size DisplayPort, three mini-DisplayPort outputs and HDMI. Buyers who need more than 8 GB of memory or a higher-wattage GPU should consider other configurations.

300 W power supply limits GPU upgrade options

The internal 300 W unit powers the i9-14900 and T400 combination as delivered. Adding a graphics card that draws significantly more power would exceed the supply capacity, so the installed T400 defines the practical graphics ceiling for this chassis.

How it compares

Measured against everything we stock in Tower & Compact Desktop PCs, at today’s prices. Recalculated every night.

Price $1,727.99
Pricier than about 90% of the 14,711 comparable items (median $494.99).
RAM capacity 8 GB DDR5
Lower than about 80% of the 13,125 comparable items (median 16 GB).
SSD storage 4 TB
Higher than about 91% of the 11,342 comparable items (median 512 GB).

Specifications

Product
Brand nameLenovo
Model nameThinkStation
Product typeBusiness & Home Office
Processor
L3 cache per CPU36 MB Cache
Memory
RAM capacity8 GB DDR5
Storage
SSD storage4 TB
Hard driveNo
Optical driveNo Optical Drive
Display
Screen sizeNo Screen
Graphics
GraphicsNVIDIA T400
GPU interfacePCI Express x16
Connectivity
Wi-Fi802.11ax
Bluetooth support5.3
Ports & slots
Memory card readerNo
Ethernet portYes
Power
Power supply300 W
Size & build
Form factorMini PC
In the box
Included monitorNot included
Software
Operating systemWindows 11 Home
More details
Keyboard typeUSB Keyboard

Questions about this item

How loud and hot does the 300 W power supply run when the i9‑14900 hits its 5.8 GHz boost all day?

The 300 W PSU powers the 24‑core i9‑14900 and T400 graphics; the mini chassis uses a single internal fan that spins up under sustained load, so expect audible airflow and warm exhaust after hours of full‑speed work.

What display cables do I need to use the HDMI, DisplayPort and three mini‑DisplayPort outputs on the T400?

The T400 provides one HDMI, one full‑size DisplayPort and three mini‑DisplayPort connectors; you must supply matching cables or adapters for each monitor you attach.

Can the 7 × 7.25 × 1.5 in mini case sit beside a legacy PCI‑card expansion box without overheating?

The compact 3.1 lb enclosure exhausts heat through its rear vents; keeping a few centimetres of clearance from adjacent gear lets the 300 W supply dissipate heat normally.

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